Securities Purchase Agreement - Healtheon Corp.


                        HEALTHEON CORPORATION



                    SECURITIES PURCHASE AGREEMENT

                          INITIAL CLOSING:
                          JANUARY 26, 1996

                         SUBSEQUENT CLOSING:
                           August 15, 1996



                          TABLE OF CONTENTS




                                                                Page
                                                                ----
                                                             
SECTION 1 - Authorization and Sale of Stock. . . . . . . . . . . . 1

      1.1  Authorization . . . . . . . . . . . . . . . . . . . . . 1
      1.2  Sale of Stock . . . . . . . . . . . . . . . . . . . . . 1

SECTION 2 - Closing Date; Delivery . . . . . . . . . . . . . . . . 1

      2.1  Closing Date. . . . . . . . . . . . . . . . . . . . . . 1
      2.2  Subsequent Closing. . . . . . . . . . . . . . . . . . . 2
      2.3  Delivery. . . . . . . . . . . . . . . . . . . . . . . . 2

SECTION 3 - Representations and Warranties of the Company. . . . . 2

      3.1  Organization and Standing; Certificate and Bylaws . . . 2
      3.2  Corporate Power . . . . . . . . . . . . . . . . . . . . 2
      3.3  Subsidiaries. . . . . . . . . . . . . . . . . . . . . . 3
      3.4  Capitalization. . . . . . . . . . . . . . . . . . . . . 3
      3.5  Authorization . . . . . . . . . . . . . . . . . . . . . 3
      3.6  Title to Properties and Assets; Liens, etc. . . . . . . 3
      3.7  Financial Statements. . . . . . . . . . . . . . . . . . 4
      3.8  Activities Since Balance Sheet Date . . . . . . . . . . 4
      3.9  Tax Returns and Payments. . . . . . . . . . . . . . . . 5
      3.10 Patents, Trademarks, etc. . . . . . . . . . . . . . . . 5
      3.11 Material Contracts and Commitments. . . . . . . . . . . 5
      3.12 Compliance with Other Instruments, None 
            Burdensome, etc. . . . . . . . . . . . . . . . . . . . 6
      3.13 Litigation, etc.. . . . . . . . . . . . . . . . . . . . 6
      3.14 Employees . . . . . . . . . . . . . . . . . . . . . . . 6
      3.15 Registration Rights . . . . . . . . . . . . . . . . . . 6
      3.16 Governmental Consent, etc.. . . . . . . . . . . . . . . 6
      3.17 Brokers or Finders. . . . . . . . . . . . . . . . . . . 7
      3.18 Disclosures . . . . . . . . . . . . . . . . . . . . . . 7
      3.19 Permits . . . . . . . . . . . . . . . . . . . . . . . . 7

SECTION 4 - Representations and Warranties of the Investors. . . . 7

      4.1  Authorization . . . . . . . . . . . . . . . . . . . . . 7
      4.2  Purchase Entirely for Own Account . . . . . . . . . . . 7
      4.3  Investment Experience . . . . . . . . . . . . . . . . . 8
      4.4  Accredited Investor . . . . . . . . . . . . . . . . . . 8
      4.5  No Public Market. . . . . . . . . . . . . . . . . . . . 8
      4.6  Receipt of Information. . . . . . . . . . . . . . . . . 8
      4.7  Restricted Securities . . . . . . . . . . . . . . . . . 8
      4.8  Further Limitations on Disposition. . . . . . . . . . . 9


                                      -i-



                            TABLE OF CONTENTS
                               (continued)



                                                                Page
                                                                ----
                                                             
      4.9  Legends . . . . . . . . . . . . . . . . . . . . . . . . 9
      4.10 Government Consents . . . . . . . . . . . . . . . . . .10

SECTION 5 - Conditions to Closing of Investors . . . . . . . . . .10

      5.1  Representations and Warranties Correct. . . . . . . . .10
      5.2  Covenants . . . . . . . . . . . . . . . . . . . . . . .10
      5.3  Opinion of Company's Counsel. . . . . . . . . . . . . .10
      5.4  Compliance Certificate. . . . . . . . . . . . . . . . .10
      5.5  Blue Sky. . . . . . . . . . . . . . . . . . . . . . . .10
      5.6  Board of Directors. . . . . . . . . . . . . . . . . . .10
      5.7  Restated Certificate. . . . . . . . . . . . . . . . . .11
      5.8  No Material Adverse Change. . . . . . . . . . . . . . .11
      5.9  Investors' Rights Agreement . . . . . . . . . . . . . .11

SECTION 6 - Conditions to Closing of Company . . . . . . . . . . .11

      6.1  Representations . . . . . . . . . . . . . . . . . . . .11
      6.2  Blue Sky. . . . . . . . . . . . . . . . . . . . . . . .11
      6.3  Restated Certificate. . . . . . . . . . . . . . . . . .11

SECTION 7 - Miscellaneous. . . . . . . . . . . . . . . . . . . . .11

      7.1  Governing Law . . . . . . . . . . . . . . . . . . . . .11
      7.2  Survival. . . . . . . . . . . . . . . . . . . . . . . .11
      7.3  Successors and Assigns. . . . . . . . . . . . . . . . .11
      7.4  Entire Agreement; Amendment . . . . . . . . . . . . . .12
      7.5  Notices, etc. . . . . . . . . . . . . . . . . . . . . .12
      7.6  Delays or Omissions . . . . . . . . . . . . . . . . . .12
      7.7  California Corporate Securities Law . . . . . . . . . .12
      7.8  Expenses. . . . . . . . . . . . . . . . . . . . . . . .13
      7.9  Counterparts. . . . . . . . . . . . . . . . . . . . . .13
      7.10 Severability. . . . . . . . . . . . . . . . . . . . . .13
      7.11 Gender. . . . . . . . . . . . . . . . . . . . . . . . .13


                                     -ii-



EXHIBITS

     A.   Schedule of Investors

     B.   Restated Certificate of Incorporation

     C.   Exceptions to Representations and Warranties of the Company 

     D.   Amended and Restated Investors' Rights Agreement

     E.   Form of Opinion of Wilson Sonsini Goodrich & Rosati




                        HEALTHEON CORPORATION

                        AMENDED AND RESTATED

                    SECURITIES PURCHASE AGREEMENT


     This Amended and Restated Securities Purchase Agreement (the "Agreement")
is made as of August 15, 1996, by and among Healtheon Corporation, a Delaware
corporation (the "Company"), with its principal office at 87 Encina Avenue, Palo
Alto, California 94301, and the persons and entities listed on the Schedule of
Investors attached as Exhibit A hereto (the "Investors").


                              SECTION 1

                   AUTHORIZATION AND SALE OF STOCK

     1.1  AUTHORIZATION.  The Company has authorized the sale and issuance of up
to 1,000,000 shares of its Common Stock ("Common Stock") and up to 10,285,000
shares of its Series A Preferred Stock ("Series A Preferred"), each having the
rights, restrictions, privileges and preferences as set forth in the Company's
Restated Certificate of Incorporation in the form attached to this Agreement as
Exhibit B (the "Restated Certificate").

     1.2  SALE OF STOCK.  Subject to the terms and conditions hereof, the
Company will issue and sell to the Investors, and the Investors will buy from
the Company, the number of shares (the "Shares") of Common Stock and Series A
Preferred specified opposite each Investor's name on the Schedule of Investors,
at a cash purchase price of $0.05 per share and $0.50 per share, respectively. 
The Company's agreements with each of the Investors are separate agreements, and
the sales of the Shares to each of the Investors are separate sales.


                              SECTION 2

                       CLOSING DATE; DELIVERY

     2.1  CLOSING DATE.  The initial closing of the purchase and sale of the
Shares hereunder (the "Closing") shall be held at 3:00 p.m. on January 26, 1996
or on such later date or dates as the Company and the Investors may agree to
(the date of such Closing being referred to as the "Closing Date").  The place
of the Closing (including the place of delivery to the Investors by the Company
of the certificates evidencing all shares of Common Stock and Series A Preferred
being purchased and the place of payment to the Company by the Investors of the
purchase price therefor) shall be at the offices of Wilson Sonsini Goodrich & Rosati, Professional Corporation, 650 Page Mill Road, Palo Alto, California
94304-1050, or such other place as the Investors and the Company may mutually



agree.  The date of any closing of the transactions contemplated by this
Agreement is sometimes also referred to herein as the "Closing Date."

     2.2  SUBSEQUENT CLOSING.  The Company may, in its sole discretion, provide
for deferred closings hereunder (the "Subsequent Closings"), to be held at the
offices of Wilson, Sonsini, Goodrich & Rosati, 650 Page Mill Road, Palo Alto,
California, at such time and dates as the Company may determine (the date of
such Subsequent Closing being referred to as the "Subsequent Closing Date"). 
The persons entitled to purchase shares of Series A Preferred pursuant to this
Section 2.2 will be limited to those individuals and entities who, based on
their reputations, experience and contacts within the Company's business, the
Board of Directors unanimously believes can contribute to the success of the
Company (the "Friends of the Company").  The Closing(s) for the Friends of the
Company will take place as promptly as possible following the initial Closing
hereunder.  The number of shares of Series A Preferred which each such Friend of
the Company shall be entitled to purchase, shall be determined within the sole
discretion of the Company, but in no event shall the total number of shares of
Series A Preferred sold pursuant to this Agreement be more than 10,285,000. 
Upon completion of each Subsequent Closing, if any, all additional purchasers of
shares of Series A Preferred shall be considered "Investors" within the meaning
of this Agreement.

     2.3  DELIVERY.  At the Closing and any Subsequent Closing, the Company will
deliver to each Investor a certificate or certificates representing the number
of Shares designated in column 2 of the Schedule of Investors to be purchased by
each Investor, against payment of the purchase price therefor, by check or wire
transfer payable to the Company, or by cancellation of outstanding indebtedness
from the Company to such Investor, or by a combination thereof, in the amount
specified in column 3 of the Schedule of Investors.


                              SECTION 3

            REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     Except as set forth on Exhibit C attached hereto, the Company hereby
represents and warrants to the Investors as follows:

     3.1  ORGANIZATION AND STANDING; CERTIFICATE AND BYLAWS.  The Company is a
corporation duly organized and existing under, and by virtue of, the laws of the
State of Delaware and is in good standing under such laws.  The Company has
requisite corporate power to own and operate its properties and assets, and to
carry on its business as presently conducted and as proposed to be conducted. 
The Company is not qualified to do business as a foreign corporation in any
jurisdiction and such qualification is not presently required.  

     3.2  CORPORATE POWER.  The Company will have at the Closing Date all
requisite corporate power to execute and deliver this Agreement and the Amended
and Restated Investors' Rights Agreement attached hereto as Exhibit D (the
"Investors' Rights Agreement"), to sell and issue the 

                                     -2-


Shares hereunder, to issue the underlying Series A-1 Preferred Stock (the 
"Series A-1 Preferred") and Common Stock (together, the "Conversion Stock") 
in accordance with the provisions of the Restated Certificate, and to carry 
out and perform its obligations under the terms of this Agreement and the 
Investors' Rights Agreement.

     3.3  SUBSIDIARIES.  The Company has no subsidiaries or affiliated companies
and does not otherwise own or control, directly or indirectly, any other
corporation, association or business entity.

     3.4  CAPITALIZATION.  The authorized capital stock of the Company consists
of 23,000,000 shares of Common Stock, 1,000,300 shares of which are issued and
outstanding prior to the Closing, and 11,000,000 shares of Series A Preferred,
10,000,000 shares of which are issued and outstanding prior to the Closing and
11,000,000 shares of Series A-1 Preferred, none of which has been or will be
issued or outstanding prior to the Closing.  The Company has reserved
(i) 10,285,000 shares of Series A Preferred for issuance hereunder,
(ii) sufficient shares of Common Stock for issuance upon conversion of the
Series A Preferred and/or Series A-1 Preferred, (iii) 10,285,000 shares of
Series A-1 Preferred for issuance upon conversion of the Series A Preferred,
(iv) 1,000,000 shares of Common Stock for issuance hereunder and (v) 9,000,000
shares of Common Stock for issuance to employees iv) 9,000,000 shares of Common
Stock for issuance to employees and consultants pursuant to the Company's 1996
Stock Plan (of which 3,389,800 shares have been granted prior to the date
hereof).  The Series A Preferred and the Series A-1 Preferred shall have the
rights, preferences, privileges and restrictions set forth in the Restated
Certificate.  There are no other options, warrants, conversion privileges or
other rights presently outstanding to purchase or otherwise acquire any
authorized but unissued shares of capital stock or other securities of the
Company.  Assuming the accuracy of each Investor's representations in Section 4
below, upon issuance, the Shares will have been issued in compliance with all
federal and state securities laws.

     3.5  AUTHORIZATION.  All corporate action on the part of the Company, 
its directors and shareholders necessary for the authorization, execution, 
delivery and performance of this Agreement and the Investors' Rights 
Agreement by the Company, the authorization, sale, issuance and delivery of 
the Shares and the Conversion Stock and the performance of the Company's 
obligations hereunder has been taken or will be taken prior to the Closing.  
This Agreement and the Investors' Rights Agreement, when executed and 
delivered by the Company, shall constitute the valid and binding obligations 
of the Company enforceable in accordance with their respective terms except 
(i) as limited by applicable bankruptcy, insolvency, reorganization, 
moratorium, and other laws of general application affecting enforcement of 
creditors' rights generally, (ii) as limited by laws relating to the 
availability of specific performance, injunctive relief, and other equitable 
remedies, and (iii) to the extent the indemnification provisions contained in 
the Investors' Rights Agreement may be limited by applicable federal and 
state securities laws.  The Shares, when issued in compliance with the 
provisions of this Agreement, will be validly issued and will be fully paid 
and nonassessable; the Series A-1 Preferred issuable upon conversion of the 
Series A Preferred has been duly and validly reserved and, when issued in 
compliance with the provisions of this Agreement, will be validly issued and 
will be fully paid and nonassessable and the Common Stock issuable upon 
conversion of the Series A Preferred and/or the Series A-1 Preferred has been 
duly and validly reserved and, when issued in compliance with the provisions 
of this Agreement, will be validly issued and will be fully

                                      -3-


paid and nonassessable, and free of any liens or encumbrances (assuming the 
Investors take the Shares with no notice thereof) other than any liens or 
encumbrances created by or imposed upon the holders; provided, however, that 
the Shares and the Conversion Stock may be subject to restrictions on 
transfer under state or federal securities laws and restrictions set forth 
herein.

     3.6  TITLE TO PROPERTIES AND ASSETS; LIENS, ETC.  The Company has good and
valid title to its properties and assets, and has good title to all its
leasehold interests, in each case subject to no mortgage, pledge, lien, lease,
encumbrance or charge, other than (i) the lien of current taxes not yet due and
payable, and (ii) possible minor liens and encumbrances which do not in any case
materially detract from the value of the property subject thereto or materially
impair the operations of the Company, and which have not arisen otherwise than
in the ordinary course of business.

     3.7  FINANCIAL STATEMENTS.  The Company has delivered to each Investor its
unaudited financial statements (balance sheet and income statement) at June 30,
1996 and for the period from inception through June 30, 1996 (the "Financial
Statements").  The Financial Statements have been prepared in accordance with
generally accepted accounting principles applied on a consistent basis
throughout the periods indicated and with each other, except that the Financial
Statements may not contain all footnotes required by generally accepted
principles and are subject to normal year end adjustments.  The Financial
Statements fairly present the financial condition and operating results of the
Company as of the dates, and for the periods, indicated therein.  Except as set
forth in the Financial Statements, the Company has no material liabilities,
contingent or otherwise, other than (i) liabilities incurred in the ordinary
course of business subsequent to June 30, 1996, which individually or in the
aggregate are not material to the financial condition or operating results of
the Company, and (ii) obligations not required under generally accepted
accounting principles to be reflected in the Financial Statements.

     3.8  ACTIVITIES SINCE BALANCE SHEET DATE.  Since the Company's balance
sheet dated June 30, 1996 there has not been:

          (a)  any damage, destruction or loss, whether or not covered by
insurance, materially and adversely affecting the assets, properties, financial
condition, operating results, or business of the Company;

          (b)  any waiver by the Company of a valuable right or of a material
debt owed to it;

          (c)  any material change or amendment to a material contract or
arrangement by which the Company or any of its assets or properties is bound or
subject, except for changes or amendments which are expressly provided for or
disclosed in this Agreement;

          (d)  any loans or guarantees made by the Company to or for the benefit
of its employees, officers or directors, or any members of their immediate
families, other than travel advances or other advances made in the ordinary
course of business;

                                     -4-


          (e)  any declaration, setting aside of payment or other distribution
in respect of any of the Company's capital stock, or any direct or indirect
redemption, purchase or other acquisition of any such stock by the Company;

          (f)  any incurrance of indebtedness for money borrowed individually in
excess of $50,000 or in excess of $100,000 in the aggregate;

          (g)  any material change in any compensation arrangement or agreement
with any employee;

          (h)  any sale, assignment or transfer of any patents, trademarks,
copyrights, trade secrets or other intangible assets;

          (i)  any resignation or termination of employment of any key officer
of the Company; and 

          (j)  to the Company's knowledge, any other event or condition or any
character which would be reasonably likely to materially and adversely affect
the assets, properties, financial condition, operating results or business of
the Company;

     3.9  TAX RETURNS AND PAYMENTS.  The Company has timely filed all tax
returns and reports when and as required by law and has never been audited by
any state or federal taxing authority.  All tax returns and reports of the
Company, if applicable, are true and correct in all material respects.

     3.10 PATENTS, TRADEMARKS, ETC.  The Company owns or has the right, or prior
to the Closing will own or have the right, to use, free and clear of all liens,
charges, claims and restrictions, all patents, trademarks, service marks, trade
names, copyrights, licenses and rights necessary to its business as now
conducted, and is not, to the best of its knowledge, infringing upon or
otherwise acting adversely to the right or claimed right of any person under or
with respect to any of the foregoing.  There are no outstanding options,
licenses, or agreements of any kind relating to the foregoing, nor is the
Company bound by or a party to any options, licenses or agreements of any kind
with respect to the patents, trademarks, service marks, trade names, copyrights,
trade secrets, licenses, information, proprietary rights and processes of any
other person or entity.  The Company has not received any written communications
alleging that the Company has violated or, by conducting its business as
proposed, would violate any patent, trademark, service mark, trade name,
copyright or trade secret or other proprietary right of any other person or
entity.  The Company is not aware that any of its employees is obligated under
any contract (including licenses, covenants or commitments of any nature) or
other agreement, or subject to any judgment, decree or order of any court or
administrative agency, that would interfere with the use of such employee's best
efforts to promote the interests of the Company or that would conflict with the
Company's business as proposed to be conducted.  Neither the execution nor
delivery of this Agreement, nor the carrying on of the Company's business by the
employees of the Company, nor the conduct of the Company's business as proposed,
will, to the Company's knowledge, conflict with or result in a breach of the
terms, conditions or provisions of, or constitute a default under, any contract,
covenant or instrument 

                                     -5-


under which any of such employees is now obligated.  The Company does not 
believe it is or will be necessary to utilize any inventions of any of its 
employees (or people it currently intends to hire) made prior to their 
employment by the Company.

     3.11 MATERIAL CONTRACTS AND COMMITMENTS.  Neither the Company, nor, to the
best knowledge of the Company, any third party is in default under any material
contract, agreement or instrument to which the Company is a party.

     3.12 COMPLIANCE WITH OTHER INSTRUMENTS, NONE BURDENSOME, ETC. The Company
is not in violation of any term of the Restated Certificate of Incorporation or
Bylaws, or in any material respect of any term or provision of any material
mortgage, indenture, contract, agreement or instrument to which it is a party or
by which it is bound, and to the best of its knowledge, is not in violation of
any order, statute, rule or regulation applicable to the Company, which
violation reasonably would be expected to have a material adverse effect on the
Company's business or financial condition.  The execution, delivery and
performance of and compliance with this Agreement, and the issuance of the
Shares and the Conversion Stock, have not resulted and will not result in any
violation of, or conflict with, or constitute a default under, or result in the
creation of, any material mortgage, pledge, lien, encumbrance or charge upon any
of the properties or assets of the Company.

     3.13 LITIGATION, ETC.  There are no actions, suits, proceedings or
investigations pending against the Company or its properties before any court or
governmental agency (nor, to the best of the Company's knowledge, is there any
written threat thereof), which, either in any case or in the aggregate,
reasonably would be expected to result in any material adverse change in the
business or financial condition of the Company or any of its properties or
assets, or in any material impairment of the right or ability of the Company to
carry on its business as now conducted, and none which questions the validity of
this Agreement or the Investors' Rights Agreement or any action taken or to be
taken in connection herewith.  The Company is not a party to, or to the best of
its knowledge named in any order, writ, injunction, judgment or decree of any
court or government agency or instrumentality.  There is no action, suit or
proceeding by the Company currently pending or that the Company currently
intends to initiate.

     3.14 EMPLOYEES.  To the best of the Company's knowledge, no employee of the
Company is in violation of any term of any employment contract, patent
disclosure agreement or any other contract or agreement relating to the
relationship of any such employee with the Company or any other party because of
the nature of the business conducted or to be conducted by the Company.  The
Company does not have any collective bargaining agreements covering any of its
employees.

     3.15 REGISTRATION RIGHTS.  Except as set forth in the Investors' Rights
Agreement, the Company is not currently under any obligation to register under
the Securities Act of 1933, as amended (the "Act") any of its presently
outstanding securities or any of its securities which may hereafter be issued.

                                     -6-



     3.16 GOVERNMENTAL CONSENT, ETC.  No consent, approval or authorization 
of, or designation, declaration or filing with, any federal, state or local 
governmental authority on the part of the Company is required in connection 
with the valid execution and delivery of this Agreement and the Investors' 
Rights Agreement, or the offer, sale or issuance of the Shares and the 
Conversion Stock, or the consummation of any other transaction contemplated 
hereby, except (a) filing of the Restated Certificate in the office of the 
Secretary of State of the State of Delaware, and (b) qualification (or taking 
such action as may be necessary to secure an exemption from qualification, if 
available) of the offer and sale of the Shares and the Conversion Stock under 
the California Corporate Securities Law and other applicable Blue Sky laws, 
which filing and qualification, if required, will be accomplished in a timely 
manner prior to or promptly upon completion of the Closing.

     3.17 BROKERS OR FINDERS.  The Company has not incurred, and will not 
incur, directly or indirectly, any liability for brokerage or finders' fees 
or agents' commissions or any similar charges in connection with this 
Agreement or any transaction contemplated hereby.

     3.18 DISCLOSURES.  No representation, warranty or statement by the 
Company in this Agreement, or in any written statement or certificate 
furnished to the Investors pursuant to this Agreement, contains any untrue 
statement of a material fact or, when taken together, omits to state a 
material fact necessary to make the statements made herein, in light of the 
circumstances under which they were made, not misleading.  However, as to any 
projections furnished to the Investors, such projections were prepared in 
good faith by the Company, but the Company makes no representation or 
warranty that it will be able to achieve such projections.  The Company has 
fully provided each Investor with all the information that such Investor has 
requested for deciding whether to purchase the Shares.

     3.19 PERMITS.  The Company has all franchises, permits, licenses, and 
any similar authority necessary for the conduct of its business as now being 
conducted by it, the lack of which could materially and adversely affect the 
business, properties or financial condition of the Company, and believes it 
can obtain without undue burden or expense, any similar authority for the 
conduct of its business as planned to be conducted.  The Company is not in 
default in any material respect under any of such franchises, permits, 
licenses or other similar authority.

                              SECTION 4

           REPRESENTATIONS AND WARRANTIES OF THE INVESTORS

     Each Investor hereby represents and warrants to the Company with respect 
to its purchase of the Shares as follows:

     4.1  AUTHORIZATION.  Each of this Agreement and the Investors' Right 
Agreement, when executed and delivered by the Investor, will constitute the 
Investor's valid and legally binding obligation, enforceable in accordance 
with its terms, except (i) as limited by applicable bankruptcy, insolvency, 
reorganization, moratorium, and other laws of general application affecting 
enforcement 

                                      -7-


of creditors' rights generally, (ii) as limited by laws relating to the 
availability of specific performance, injunctive relief, or other equitable 
remedies, and (iii) to the extent the indemnification provisions contained in 
the Investors' Rights Agreement may be limited by applicable federal or state 
securities laws.

     4.2  PURCHASE ENTIRELY FOR OWN ACCOUNT.  This Agreement is made with the 
Investor in reliance upon the Investor's representation to the Company, which 
by the Investor's execution of this Agreement the Investor hereby confirms, 
that the Common Stock or Series A Preferred to be received by the Investor 
and the Common Stock and Series A-1 Preferred issuable upon conversion of the 
Series A Preferred (collectively, the "Securities") will be acquired for 
investment for the Investor's own account, not as a nominee or agent, and not 
with a view to the resale or distribution of any part thereof, and that the 
Investor has no present intention of selling, granting any participation in, 
or otherwise distributing the same.  By executing this Agreement, the 
Investor further represents that the Investor does not have any contract, 
undertaking, agreement or arrangement with any person to sell, transfer or 
grant participations to such person or to any third person, with respect to 
any of the Securities.  The Investor represents that it has the full power 
and authority to enter into this Agreement.

     4.3  INVESTMENT EXPERIENCE.  The Investor is an investor in securities 
of companies in the development stage and acknowledges that it is able to 
fend for itself, can bear the economic risk of its investment, and has such 
knowledge and experience in financial or business matters that it is capable 
of evaluating the merits and risks of the investment in the Common Stock or 
Series A Preferred. If other than an individual, the Investor also represents 
it has not been organized solely for the purpose of acquiring the Common 
Stock or Series A Preferred, or if the Investor has been organized solely for 
the purpose of acquiring the Common Stock or Series A Preferred, that all of 
the equity owners of the Investor are "accredited investors" as defined below.

     4.4  ACCREDITED INVESTOR.  The Investor is an "accredited investor" 
within the meaning of Securities and Exchange Commission ("SEC") Rule 501 of 
Regulation D, as presently in effect.

     4.5  NO PUBLIC MARKET.  Each Investor understands that no public market 
now exists for any of the securities issued by the Company and that it is 
unlikely that a public market will ever exist for the Shares.

     4.6  RECEIPT OF INFORMATION.  Each Investor has received and reviewed 
this Agreement and all Exhibits thereto; it, its attorney and its accountant 
have had access to, and an opportunity to review all documents and other 
materials requested of, the Company; it and they have been given an 
opportunity to ask any and all questions of, and receive answers from, the 
Company concerning the terms and conditions of the offering and to obtain all 
information it or they believe necessary or appropriate to evaluate the 
suitability of an investment in the Common Stock or Series A Preferred; and, 
in evaluating the suitability of an investment in the Common Stock or Series 
A Preferred, it and they have not relied upon any representations or other 
information (whether oral or written) other than as set forth in the 
documents and answers referred to above.


                                      -8-


     4.7  RESTRICTED SECURITIES.  The Investor understands that the 
Securities it is purchasing are characterized as "restricted securities" 
under the federal securities laws inasmuch as they are being acquired from 
the Company in a transaction not involving a public offering and that under 
such laws and applicable regulations such securities may be resold without 
registration under the Act only in certain limited circumstances.  In 
addition, the Investor represents that it is familiar with Rule 144 
promulgated under the Act, as presently in effect, and understands the resale 
limitations imposed thereby and by the Act.

     4.8  FURTHER LIMITATIONS ON DISPOSITION.  Without in any way limiting 
the representations set forth above, the Investor further agrees not to make 
any disposition of all or any portion of the Securities unless:

          (a)  There is then in effect a Registration Statement under the 
Securities Act covering such proposed disposition and such disposition is 
made in accordance with such Registration Statement;

          (b)  The Investor shall have notified the Company of the proposed 
disposition and shall have furnished the Company with a statement of the 
circumstances surrounding the proposed disposition, and if requested by the 
Company, the Investor shall have furnished the Company with either (i) an 
unqualified written opinion of counsel who shall be reasonably satisfactory 
to the Company addressed to the Company and reasonably satisfactory in form 
and substance to the Company's counsel to the effect that the proposed 
transfer may be effected without registration under the Act or (ii) a "No 
Action" letter from the Securities and Exchange Commission to the effect that 
the transfer of such securities without registration will not result in a 
recommendation by the staff of the Securities and Exchange Commission that 
action be taken with respect thereto, whereupon the holder of such Securities 
shall be entitled to transfer such Securities in accordance with the terms of 
the notice delivered by the Holder to the Company; or

          (c)  The Investor shall have sold, assigned, transferred, pledged 
or otherwise disposed of the Securities in a transaction involving the 
distribution without consideration of the Securities by the Investor to any 
of its partners or retired partners, or to the estate of any of its partners 
or retired partners, or in a transaction involving the transfer or 
distribution of the Securities by a corporation to any subsidiary, parent or 
affiliated corporation of such corporation; provided in each case that the 
Investor shall give written notice to the Company of such Investor's 
intention to effect such transfer, sale, assignment, pledge or other 
disposition.  The Investor will cause any such proposed purchaser, assignee, 
transferee or pledgee of any Securities held by the Investor to agree to take 
and hold such Securities subject to the provisions and upon the conditions 
specified in this Agreement.

     4.9  LEGENDS.  It is understood that the certificates evidencing the 
Securities may bear one or all of the following legends:

          (a)  "THESE SECURITIES HAVE NOT BEEN REGISTERED UNDER THE 
SECURITIES ACT OF 1933, AS AMENDED.  THEY MAY NOT BE SOLD, OFFERED FOR 

                                      -9-


SALE, PLEDGED OR HYPOTHECATED IN THE ABSENCE OF A REGISTRATION STATEMENT IN 
EFFECT WITH RESPECT TO THE SECURITIES UNDER SUCH ACT OR AN OPINION OF COUNSEL 
SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED OR UNLESS 
SOLD PURSUANT TO RULE 144 OR RULE 144A OF SUCH ACT."

          (b)  Any legend required by the laws of the State of Delaware or 
the State of California, including any legend required by the California 
Department of Corporations.

     4.10 GOVERNMENT CONSENTS.  Other than securities law filings required to 
be made by the Company, no consent, approval or authorization of or 
designation, declaration or filing with any state, federal or foreign 
governmental authority on the part of the Investor is required in connection 
with the valid execution and delivery of this Agreement and the Investors' 
Rights Agreement by the Investor and the consummation by the Investor of the 
transactions contemplated hereby and thereby.

                              SECTION 5

                 CONDITIONS TO CLOSING OF INVESTORS

     The Investors' obligations to purchase the Shares at the Closing or at 
any Subsequent Closing are, at the option of each Investor, subject to the 
fulfillment on or prior to the Closing Date or at any Subsequent Closing Date 
of the following conditions:

     5.1  REPRESENTATIONS AND WARRANTIES CORRECT.  The representations and 
warranties made by the Company in Section 3 hereof shall be true and correct 
in all material respects when made, and shall be true and correct in all 
material respects on the Closing Date, or the Subsequent Closing Date, as the 
case may be, with the same force and effect as if they had been made on and 
as of said date.

     5.2  COVENANTS.  All covenants, agreements and conditions contained in 
this Agreement to be performed by the Company on or prior to the Closing Date 
or the Subsequent Closing Date, as the case may be, shall have been performed 
or complied with in all material respects.

     5.3  OPINION OF COMPANY'S COUNSEL.  The Investors shall have received 
from Wilson Sonsini Goodrich & Rosati, Professional Corporation, counsel to 
the Company, an opinion addressed to them, dated the Closing Date or the 
Subsequent Closing Date, as the case may be, in substantially the form 
attached hereto as Exhibit E.

     5.4  COMPLIANCE CERTIFICATE.  The Company shall have delivered to the 
Investors a certificate executed by the President of the Company, dated the 
Closing Date or the Subsequent Closing Date, as the case may be, and 
certifying to the fulfillment of the conditions specified in Sections 5.1, 
5.2, and 5.8 of this Agreement, and that he has made, or caused to be made, 
such investigations as he deemed necessary in order to permit him to verify 
the accuracy of the information set forth in such certificate.

                                      -10-


     5.5  BLUE SKY.  The Company shall have obtained all necessary Blue Sky 
law permits and qualifications, or secured an exemption therefrom, required 
by any state for the offer and sale of the Shares and the Conversion Stock.

     5.6  BOARD OF DIRECTORS.  On or before the Closing, the Bylaws of the 
Company shall provide for a flexible number of directors from three to five 
and fixing the current number of directors at four.  The Board of Directors 
shall at the Closing consist of Jim Clark, Brook Byers, Hugh Reinhoff and 
David Schnell.

     5.7  RESTATED CERTIFICATE.  The Restated Certificate shall have been 
filed with the Secretary of State of the State of Delaware.

     5.8  NO MATERIAL ADVERSE CHANGE.  There shall have been no material 
adverse change in the Company's business or financial condition.

     5.9  INVESTORS' RIGHTS AGREEMENT.  The Investors and the Company shall 
have entered into the Investors' Rights Agreement in substantially the form 
attached hereto as Exhibit D.

                              SECTION 6

                  CONDITIONS TO CLOSING OF COMPANY

     The Company's obligation to sell and issue the Shares at the Closing or 
at any Subsequent Closing, is at the option of the Company, subject to the 
fulfillment of the following conditions:

     6.1  REPRESENTATIONS.  The representations made by the Investors in 
Section 4 hereof shall be true and correct when made, and shall be true and 
correct on the Closing Date or the Subsequent Closing Date, as the case may 
be.

     6.2  BLUE SKY.  The Company shall have obtained all necessary Blue Sky 
law permits and qualifications, or secured an exemption therefrom, required 
by any state for the offer and sale of the Shares and the Conversion Stock.

     6.3  RESTATED CERTIFICATE.  The Restated Certificate shall have been 
filed with the Secretary of State of the State of Delaware.

                              SECTION 7

                            MISCELLANEOUS

     7.1  GOVERNING LAW.  This Agreement shall be governed in all respects by 
the laws of the State of California, without giving effect to the conflicts 
of laws principles thereof.


                                      -11-


     7.2  SURVIVAL.  The representations, warranties, covenants, and 
agreements made herein shall survive any investigation made by any Investor 
and the closing of the transactions contemplated hereby.

     7.3  SUCCESSORS AND ASSIGNS.  Except as otherwise provided herein, the 
provisions hereof shall inure to the benefit of, and be binding upon, the 
successors, assigns, heirs, executors, and administrators of the parties 
hereto, provided, however, that the rights of a Investor to purchase Shares 
shall not be assignable without the written consent of the Company.

     7.4  ENTIRE AGREEMENT; AMENDMENT.  This Agreement and the other 
documents delivered pursuant hereto constitute the full and entire 
understanding and agreement between the parties with regard to the subjects 
hereof and thereof. Neither this Agreement nor any term hereof may be 
amended, waived, discharged, or terminated other than by a written instrument 
signed by the party against whom enforcement of any such amendment, waiver, 
discharge, or termination is sought; provided, however, that holders of a 
majority of the shares of Common Stock issued or issuable upon conversion of 
the Shares and/or the Series A-1 Preferred and (whether or not converted) not 
resold to the public may waive or amend, on behalf of all Investors, any 
provisions hereof benefiting Investors in respect of the Shares.

     7.5  NOTICES, ETC.  All notices and other communications required or 
permitted hereunder shall be in writing and shall be deemed effectively given 
upon delivery to the party to be notified in person or by courier service or 
five days after deposit with the United States mail, by registered or 
certified mail, postage prepaid, addressed (a) if to a Investor, at such 
Investor's address set forth in Exhibit A, or at such other address as such 
Investor shall have furnished to the Company in writing, or (b) if to any 
other holder of any Shares, at such address as such holder shall have 
furnished the Company in writing, or, until any such holder so furnishes an 
address to the Company, then to and at the address of the last holder of such 
Shares who has so furnished an address to the Company, or (c) if to the 
Company, one copy should be sent to its address set forth on the cover page 
of this Agreement and addressed to the attention of the Corporate Secretary, 
or at such other address as the Company shall have furnished to the Investors.

     7.6  DELAYS OR OMISSIONS.  No delay or omission to exercise any right, 
power or remedy accruing to any holder of any Shares, upon any breach or 
default of the Company under this Agreement, shall impair any such right, 
power or remedy of such holder nor shall it be construed to be a waiver of 
any such breach or default, or an acquiescence therein, or of or in any 
similar breach or default thereafter occurring; nor shall any waiver of any 
single breach or default be deemed a waiver of any other breach or default 
theretofore or thereafter occurring.  Any waiver, permit, consent or approval 
of any kind or character on the part of any holder of any breach or default 
under this Agreement, or any waiver on the part of any holder of any 
provisions or conditions of this Agreement, must be in writing and shall be 
effective only to the extent specifically set forth in such writing.  All 
remedies, either under this Agreement or by law or otherwise afforded to any 
holder, shall be cumulative and not alternative.

                                      -12-



     7.7  CALIFORNIA CORPORATE SECURITIES LAW.  THE SALE OF THE SECURITIES WHICH
ARE THE SUBJECT OF THIS AGREEMENT HAS NOT BEEN QUALIFIED WITH THE COMMISSIONER
OF CORPORATIONS OF THE STATE OF CALIFORNIA AND THE ISSUANCE OF SUCH SECURITIES
OR THE PAYMENT OR RECEIPT OF ANY PART OF THE CONSIDERATION THEREFOR PRIOR TO
SUCH QUALIFICATION IS UNLAWFUL UNLESS AN EXEMPTION FROM SUCH QUALIFICATION IS
AVAILABLE.  THE RIGHTS OF ALL PARTIES TO THIS AGREEMENT ARE EXPRESSLY
CONDITIONED UPON SUCH QUALIFICATION BEING OBTAINED, OR SUCH EXEMPTION BEING
AVAILABLE.

     7.8  EXPENSES.  The Company and the Investors shall each bear their own
expenses and legal fees with respect to this Agreement and the transactions
contemplated hereby except that, assuming a successful completion of the
offering the Company will pay at the initial Closing the reasonable legal fees
and reasonable expenses upon receipt of a bill therefor, incurred by one counsel
to the Investors.

     7.9  COUNTERPARTS.  This Agreement may be executed in any number of
counterparts, each of which may be executed by less than all of the Investors,
each of which shall be enforceable against the parties actually executing such
counterparts, and all of which together shall constitute one instrument.

     7.10 SEVERABILITY.  In the event that any provision of this Agreement
becomes or is declared by a court of competent jurisdiction to be illegal,
unenforceable or void, this Agreement shall continue in full force and effect
without said provision; provided that no such severability shall be effective if
it materially changes the economic benefit of this Agreement to any party.

     7.11 GENDER.  The use of the neuter gender herein shall be deemed to
include the masculine and the feminine gender, if the context so requires. 

                                     -13-


     The foregoing Amended and Restated Securities Purchase Agreement is hereby
executed as of the date first above written.


                              COMPANY:       

                              HEALTHEON CORPORATION



                              By:   /s/ David Schnell, M.D.
                                 --------------------------------------------
                                        David Schnell, M.D., 
                                        President
     
                              Address:      87 Encina Avenue
                                            Palo Alto, CA 94301

                                     -14-

 
                        HEALTHEON CORPORATION


                           SIGNATURE PAGE

                                 TO

                        AMENDED AND RESTATED

                    SECURITIES PURCHASE AGREEMENT


The undersigned hereby executes and delivers the Amended and Restated Securities
Purchase Agreement (the "Agreement") to which this Signature Page is attached
effective as of the date of the Agreement, which Agreement and Signature Page,
together with all counterparts of said Agreement and Signature Pages of the
other parties named in said Agreement, shall constitute one and the same
document in accordance with the terms of said Agreement.




                              --------------------------------------------
                              Name of Stockholder



                              By:                                          
                                 -----------------------------------------



                              Print Name:
                                         ---------------------------------



                              Title:
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