Exhibit 10.51

THIRD AMENDED AND RESTATED MEDPARTNERS, INC.
EMPLOYEE STOCK PURCHASE PLAN

This Third Amended and Restated MedPartners, Inc. Employee Stock Purchase Plan (the "Third Amended Plan" or "the Plan") shall be effective as of
November 11, 1998. This Third Amended Plan replaces in entirety the original MedPartners, Inc. Employee Stock Purchase Plan effective as of January 1, 1997, the Amended and
Restated MedPartners, Inc. Employee Stock Purchase Plan effective as of January 1,1998, and the Second Amended and Restated MedPartners, Inc. Employee Stock Purchase Plan
effective as of July 1, 1998.

ARTICLE I
PURPOSE

1.1  PURPOSE.
This Third Amended and Restated MedPartners, Inc. Employee Stock Purchase Plan has been established to provide eligible employees of
MedPartners, Inc. (the "Company") and its subsidiaries an opportunity to purchase shares of the Company's Common Stock, par value $.001 per share (the "Common Stock"), on a more advantageous
basis than would otherwise be available, thereby increasing their interest in the Company. It is the intention of the Company that the Plan qualify as an "employee stock purchase plan" under
Section 423 of the Internal Revenue Code of 1986, as amended (the "Code"). The provisions of the Plan shall be, construed in a manner consistent with the requirements of that section of the
Code.

ARTICLE II
DEFINITIONS

As used herein, the following words and phrases shall have the following meanings:

2.1  "ADMINISTRATION
AGENT" shall mean the third-party administration firm selected by the Committee to provide the administrative services with respect to the Plan as set
forth herein.

2.2  "BENEFICIAL
OWNER" or "BENEFICIAL OWNERSHIP" shall have the meaning ascribed to such term in Rule 13d-3 of the General Rules and Regulations under the
Exchange Act.

2.3  "BOARD"
or "BOARD OF DIRECTORS" shall mean the Board of Directors of the Company.

2.4  "CHANGE
IN CONTROL" of the Company shall be deemed to have occurred as of the first day that anyone or more of the following conditions shall have been
satisfied:



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2.5  "COMMITTEE"
means the Board of Directors or such other committee appointed by the Board to administer the Plan.

2.6  "COMMON
STOCK" shall mean the Company's Common Stock, par value $.001 per share.

2.7  The
"COMPANY" shall mean MedPartners, Inc., a Delaware corporation, or its successors.

2.8  "CONTRIBUTION
ACCOUNT" shall mean an account established on behalf of a Participating Employee to which the Participating Employee's contributions made pursuant to
Article V of this Plan shall be credited.

2.9  A
Participating Employee's "CONTRIBUTION RATE" shall be the amount selected by the Participating Employee to be contributed by payroll deduction to his or her
Contribution Account, as outlined in Section 5.5.

2.10 "DIRECTOR"
means any individual who is a member of the Board of Directors of the Company.

2.11 The
"EFFECTIVE DATE" of this Plan shall be November 11, 1998. The "EFFECTIVE DATE" of a particular Employee's enrollment in the Plan is the first payroll of the
calendar quarter (either January 1, April 1, July 1, or October 1 of each calendar year) following such Employee I s timely election to participate in the Plan made in
accordance with the provisions of Article V of this Plan.

2.12 "EMPLOYEE"
shall mean any person who is employed by the Company or a subsidiary of the Company, including leased employees.

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2.13 "EMPLOYEE
PLAN PERIOD" shall mean each 3-month period of a Participating Employee's enrollment in the Plan (i.e., January 1 through March 31,
April 1 through June 30, July 1 through September 30 and October 1 through December 31 of each calendar year).

2.14 "EXCHANGE
ACT" means the Securities Exchange Act of 1934, as amended from time to time, or any successor act thereto.

2.15 "ISSUE
PRICE" shall mean the purchase price of shares of the Company's Common Stock to be charged to a Participating Employee on the Purchase Date, as determined in
accordance with Section 7.1.

2.16 "MARKET
PRICE" shall mean the closing sale price of a share of Common Stock for the day upon which the Market Price is to be determined as reported on the National
Association of Securities Dealers' New York Stock Exchange Composite Reporting Tape (or, if the Common Stock is not traded on the New York Stock Exchange, the closing sale price on the exchange on
which it is traded or as reported by an applicable automated quotation system) (the "Composite Tape"). Notwithstanding the foregoing, if the Common Stock is no longer reported on the Composite Tape,
the Market Price of the Company's Common Stock as of a particular date shall be determined using such method as shall be determined by the Committee.

2.17 "PARTICIPATING
EMPLOYEE" shall mean any eligible Employee opting to participate in the Plan, including leased employees meeting the eligibility criteria of
Section V.

2.18 "PERSON"
shall have the meaning ascribed to such term in Section 3(a)(9) of the Exchange Act and used in Sections 13(d) and 14(d) thereof, including a "group" as
defined in Section 13(d) thereof.

2.19 "PLAN"
shall mean the Third Amended and Restated MedPartners, Inc. Employee Stock Purchase Plan, as set forth herein, and all subsequent amendments hereto.

2.20 "PURCHASE
DATE" shall mean the New York Stock Exchange's ("NYSE") last trading date during an Employee Plan Period (except that the Purchase Date for all Participating
Employees who entered the Plan on October 1, 1997, January 1, 1998, April 1, 1998, or July 1, 1998, shall be September 30, 1998). Notwithstanding the foregoing,
"Purchase Date" shall also mean: (i) with respect to all Participating Employees, the NYSE's last trading date coinciding with or occurring immediately before (A) a Change in Control of
the Company, or (B) the effective date of the termination of the Plan; (ii) with respect to Participating Employees who are employed by any business unit, division or company, the
operation of which is ceased ("Cessation of Business"), the NYSE's last trading date coinciding or occurring immediately before the Cessation of Business as reasonably designated by the Committee;
(iii) with respect to Participating Employees who are employed by any direct or indirect subsidiary of the Company, business unit, division or company, which is sold, transferred or disposed of
("Sale of Business "), the NYSE's last trading date coinciding with or occurring immediately before the effective closing date of the Sale of Business; and (iv) with respect to Participating
Employees who are leased employees of any direct or indirect subsidiary of the Company, business unit, division or company, which is sold, transferred or disposed of through a Sale of Business, the
NYSE' s last trading date of the Employee Plan Period ending immediately prior to such leased Participating Employee's termination from employment (which may be after the closing date of the Sale of
Business).

ARTICLE III
ADMINISTRATION

3.1  COMMITTEE'S
ADMINISTRATION OF AND AUTHORITY AND RESPONSIBILITIES WITH RESPECT TO THE PLAN. The Plan shall be administered by the Committee, although the Company's Human
Resources Department and the Administration Agent will operate the Plan on a day-to-day basis and manage the brokerage accounts set up on Participating Employees' behalf
following purchases of Common Stock under the Plan. The Committee shall have full power and authority to administer the Plan, to interpret and construe any provision of the Plan finally and
conclusively with respect to all persons having any interest thereunder, to adopt rules and regulations

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not inconsistent with the Plan for carrying out the Plan, providing for matters not specifically covered thereby, and to alter, amend or revoke any rules or regulations so adopted; provided, however,
that the Administration Agent shall have the responsibilities with respect to the Plan set forth herein. No member of the Committee shall be liable to the Company, any stockholder, any employee of the
Company or its subsidiaries or any participant in the Plan for any action or determination in good faith with respect to the Plan.

3.2  ADMINISTRATION
AGENT. The Committee will select and designate a third-party administration firm to provide the administrative and brokerage services, respectively, with
respect to the Plan as set forth herein. The Committee may from time to time replace and redesignate the Administration Agent.

ARTICLE IV
SHARES SUBJECT TO PLAN

4.1  SHARES
SUBJECT TO PLAN. The Company hereby reserves 5,000,000 shares of Common Stock for issuance under the Plan. These shares shall be authorized and unissued shares.
To the extent provided by resolution of the Board, such shares may be uncertificated.

4.2  ADJUSTMENTS
TO SHARES RESERVED. In the event of any merger, consolidation, reorganization, recapitalization, spin-off, stock dividend, stock split, reverse
stock split, exchange or other distribution with respect to shares of Common Stock or other change in the corporate structure or capitalization affecting the Common Stock, the type and number of
shares of stock which are or may be subject to the Plan or contributed amounts under the Plan shall be equitably adjusted by the Committee, in its sole discretion, to preserve the value of benefits
under the Plan.

ARTICLE V
ELIGIBILITY AND ENROLLMENT

5.1  INITIAL
ELIGIBILITY. Subject to the limitations set forth below, every Employee of the Company and its subsidiaries who has been employed by the Company or a subsidiary
for at least the 60 consecutive days preceding the Effective Date of such person's enrollment is eligible to participate in the Plan.

5.2  LIMITATIONS
ON PARTICIPATION. Notwithstanding any provisions of the Plan to the contrary, no Employee shall be entitled to participate, select a Contribution Rate,
contribute amounts to his or her Contribution Account or otherwise purchase Common Stock under the Plan (or any other employee stock purchase plan of the Company and its subsidiaries, if any) to the
extent:



5.3  ENROLLMENT.
The Company or the Administration Agent shall furnish information relating to the Plan and Plan enrollment to each Employee who is or becomes eligible to
participate. If the Employee elects to participate in the Plan (and thus become a Participating Employee), he or she shall enroll according to the enrollment procedures set forth in the information
provided by the Company or the Administration Agent. Upon enrollment, the Company or the Administration Agent will provide a confirmation statement to the Participating Employee. If an eligible
Employee does not elect to participate as of the first calendar quarter available for such Employee's election, the Employee may nonetheless elect to participate commencing with any subsequent
calendar quarter.

5.4  EFFECTS
OF ENROLLMENT. Except as set forth elsewhere in this Plan, enrollment in the Plan is for one three-month period from the Effective Date of enrollment. Except as
set forth

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elsewhere in this Plan, amounts contributed by the Participating Employee will be applied to the purchase of shares of Common Stock in accordance with the provisions of Article VII at the end
of such Employee Plan Period. Enrollment continues, and is automatically renewed at the end of an Employee Plan Period for an additional Employee Plan Period, unless and until payroll deductions and
Plan participation have been specifically discontinued in accordance with the provisions of Article VI.

5.5  PARTICIPATING
EMPLOYEE'S CONTRIBUTION RATE. In order to participate in the Plan, an Employee must elect to participate in accordance with Section 5.3 and must
authorize the Company or its subsidiary, as applicable, to deduct from payroll on behalf of such Participating Employee a specified amount per pay period. Such amount may not be less than $5.00 nor
more than $800.00 per pay period; provided, however, that such minimum and maximum amounts may be adjusted by the Company at any time and from time to time for the sake of administrative convenience
and/or to ensure continued compliance with the provisions of Section 423 of the Code.

ARTICLE VI
DEDUCTIONS, MODIFICATIONS & PLAN WITHDRAWAL

6.1  DEDUCTIONS.
Payroll deductions at the Participating Employee's Contribution Rate shall begin on the first payroll date following the Effective Date of such Participating
Employee's enrollment in the Plan. The Participating Employee's contributions shall be allocated to and deemed a part of the Participating Employee's Contribution Account. Participating Employee
contributions will not be permitted to begin at any time other than the first payroll date in any Employee Plan Period. No interest shall accrue or be paid on any amounts withheld under the Plan.

6.2  MODIFICATIONS
IN CONTRIBUTION RATE. The Participating Employee's Contribution Rate, once established, shall remain in effect for all of the Employee Plan Period and
subsequent Employee Plan Periods unless increased or decreased by the Participating Employee in the manner specified by the Company or the Administration Agent. Any increase or decrease in a
Participating Employee's Contribution Rate shall be implemented as soon as administratively feasible following contact by the Participating Employee regarding such increase or decrease.

6.3  SUSPENDING
CONTRIBUTIONS. At any time during an Employee Plan Period, a Participating Employee may notify the Company or the Administration Agent that he or she wishes
to suspend his or her contributions for such Employee Plan Period. This notice shall be communicated in the manner specified by the Company or the Administration Agent. A Participating Employee who
suspends contributions will have the already-contributed balance in his or her Contribution Account applied to purchases of Common Stock on the Purchase Date. A Participating Employee who has
suspended contributions under the Plan may not resume contributions until his or her Employee Plan Period has expired.

6.4  WITHDRAWAL
FROM PLAN. At any time, a Participating Employee may notify the Company or the Administration Agent that he or she wishes to withdraw from participation in
the Plan. This notice shall be communicated in the manner specified by the Company or the Administration Agent. A Participating Employee who has withdrawn from participation in the Plan may not
re-enroll in the Plan until his or her Employee Plan Period has expired. Upon withdrawal from the Plan pursuant to this Article VI, the Employee shall be issued a payroll check in
the amount of his or her Contribution Account as of the effective date of withdrawal as soon as administratively feasible.

ARTICLE VII
PURCHASE OF COMMON STOCK

7.1  PURCHASES.
On each Purchase Date, the funds in a Participating Employee's Contribution Account shall be used to purchase the maximum number of shares of Common Stock
determined by dividing the Issue Price into the balance in such Contribution Account (subject to the limitations set forth in Section 7.2). The Issue Price of the shares of Common Stock issued
under the Plan shall be equal to the lesser of: (i) 85% of the Market Price on the Purchase Date, or (ii) 85% of the Market Price on the first trading date of the respective Employee
Plan Period.

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7.2  OVER-ALLOTMENTS.
If the total number of shares to be purchased by all Participating Employees on a Purchase Date exceeds the number of shares authorized
under Article IV of the Plan, a pro-rata allocation of the available shares will be made among all Participating Employees based on the amount of the balances in their respective
Contribution Accounts through the Purchase Date.

7.3  ISSUED
SHARES. A Participating Employee's shares of Common Stock will be deposited in a brokerage account, as soon as administratively feasible, opened on behalf of the
Participating Employee with the Administration Agent. All fees and commissions associated with the operation of such brokerage account shall be the responsibility of the Participating Employee.

ARTICLE VIII
CHANGES IN STATUS AFFECTING ELIGIBILITY

8.1  TERMINATION
OF EMPLOYMENT. Effective upon the termination of the Participating Employee's employment for any reason, including without limitation death, permanent
disability, or retirement, such person's participation in the Plan shall be deemed withdrawn and authorized payroll deductions credited to his or her Contribution Account will be returned to him or
her in accordance with the provisions of Section 6.4 as soon as administratively feasible. However, if a Participating Employee terminates his or her employment after a Purchase Date has
occurred, the Company shall purchase shares of the. Company's Common Stock with the funds in the terminated Participating Employee's Contribution Account for that previously completed Employee Plan
Period. Notwithstanding the foregoing, with respect to the following described Participating Employees, upon the termination of employment of a Participating Employee arising in connection with
(i) the Cessation of Business of any business unit, division or company employing such Participating Employee, such Participating Employee shall be allowed to continue participating in the Plan
up to such Cessation of Business; (ii) the Sale of Business of any direct or indirect subsidiary of the Company, business unit, division or company,employing such Participating Employee, such
person's authorized payroll deductions credited to his or her Contribution Account through the closing date of the Sale of Business shall be used to purchase shares pursuant to the terms of the Plan;
and (Hi) the Sale of Business of any direct or indirect subsidiary of the Company, business unit, division or company employing Participating Employees who are leased employees of such entity, such
leased Participating Employee shall be allowed to continue participation in the Plan through the end of the Employee Plan Period ending immediately prior to their termination from employment (which
may be after the closing date of the Sale of Business) (Any contribution made after the end of the Employee Plan Period ending immediately prior to such leased Participating Employee's termination
pursuant to a Sale of Business shall be refunded to the leased Participating Employee as soon as administratively feasible after their termination).

8.2  TEMPORARY
ABSENCE. If a Participating Employee temporarily leaves the employ of the Company or its subsidiaries by reason of leave of absence, the Participating Employee
may continue to participate in the Plan as long as such Participating Employee continues to make contributions through payroll deductions. If a Participating Employee is on unpaid leave, he or she
will not be able to continue participating in the Plan. However, unless such Participating Employee withdraws from the Plan, Common Stock will be purchased on such person's behalf at the end of the
Employee Plan Period with any amounts deducted from such Participating Employee's paycheck during that Employee Plan Period.

ARTICLE IX
GENERAL PROVISIONS

9.1  TERM
OF PLAN. The Plan shall remain in effect until all of the shares of Common Stock reserved for issuance hereunder have been issued and balances maintained in the
Participating Employee Contribution Accounts have been distributed, unless earlier terminated by the Board.

9.2  AMENDMENT
OR TERMINATION BY COMMITTEE. The Committee may at any time or from time to time amend the Plan in any respect. The Committee may terminate the Plan at any
time.

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If the Plan is terminated, unless otherwise specified, the date of termination shall be treated as a Purchase Date. All funds in Participating Employee Contribution Accounts as of the termination
date which are not applied toward purchases of shares of Common Stock shall be refunded to the Participating Employees as soon as administratively feasible.

9.3  TRANSFERABILITY.
Neither the right of an Employee to purchase shares of Common Stock hereunder, nor such Participating Employee's Contribution Account balance, may be
transferred, pledged or assigned by the Employee (except, in the event of the Employee's death, by will or the laws of descent and distribution). Any such attempted transfer, pledge, assignment or
other disposition shall be treated as an election of the Participating Employee to withdraw his or her participation in the Plan.

9.4  COMPLIANCE
WITH SECURITIES LAWS. Notwithstanding any other provision of the Plan, the Company shall have no obligation to issue any shares of Common Stock under the Plan
unless such issuance would comply. with all applicable laws, including Federal and state securities laws, and the applicable regulations or requirements of any securities exchanges or similar
entities.

9.5  INVESTMENT
INTENT. Prior to the issuance of any shares of Common Stock under the Plan, the Company may require a written statement that the recipient is acquiring the
shares for investment and not for the purpose or with the intention of distributing the shares and will not dispose of them in violation of the registration requirements of the Securities Act of 1933,
as amended, and the rules and regulations promulgated thereunder.

9.6  COMPLIANCE
WITH SECTION 16(b). With respect to any person who is subject to Section 16(a) of the Securities Exchange Act of 1934, as amended, the Committee may,
at any time, add such conditions and limitations respecting eligibility or participation under the Plan as it deems necessary or desirable to comply with the requirements of
Rule 16b-3 thereunder; provided, however, that any rights or privileges that are extended to such persons shall be extended uniformly to all eligible employees.

9.7  WITHHOLDING
TAXES. Amounts withheld, shares issued and payments made pursuant to the Plan may be subject to withholding taxes, and the Company and its subsidiaries shall
have the right to withhold from any payment or distribution of shares or to collect as a condition of any payment or distribution under the Plan, as applicable, any taxes required by law to be
withheld.

9.8  NO
CONTINUED EMPLOYMENT. The Plan does not constitute a contract of employment or continued service, and participation in the Plan will not give any Employee the right
to be retained in the employ of the Company or any right or claim to any benefit under the Plan unless such right or claim has specifically accrued under the terms of the Plan.

9.9  TREATMENT
AS STOCKHOLDER. Any contribution made by a Participating Employee under the Plan shall not create any rights in such Participating Employee as a stockholder of
the Company until shares of Common Stock are registered in the name of such person.

9.10 VOTING
OF ISSUED SHARES. The Administration Agent will vote the Common Stock held in brokerage accounts on behalf of Participating Employees in accordance with
instructions received from such Participating Employees. The Administration Agent will transmit to Participating Employees all proxy material and other reports furnished by the Company to its
stockholders.

9.11 GOVERNING
LAW. The law of the State of Delaware will govern all matters relating to this Plan except to the extent it is superseded by the laws of the United States.

|MEDPARTNERS, INC. |  |                    
|----------------- |  | -------------------
|By:               |  | /s/KIRK MCCONNELL  
|Name:             |  | Kirk McConnell     
|Title:            |  | SVP Human Resources

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