Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Stanley Michael D
   2. Issuer Name and Ticker or Trading Symbol
MEDNAX, INC. [MD] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
President, Clinical Services
(Last)
(First)
(Middle)
1301 CONCORD TERRACE		 3. Date of Earliest Transaction (Month/Day/Year)
06/01/2016
(Street)

SUNRISE, FL 33323		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 06/01/2016   A   12,135 (1) A $ 0 49,266 D  
Common Stock 06/01/2016   S(2)   14,778 D $ 67.7838 (3) 35,247 (4) D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Stanley Michael D
1301 CONCORD TERRACE
SUNRISE, FL 33323		       President, Clinical Services  

Signatures

 Dominic J. Andreano, Attorney-in-Fact   06/03/2016
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Restricted shares granted pursuant to the Issuer's Amended and Restated 2008 Incentive Compensation Plan, as amended, in connection with annual equity award. The number of shares being reported represents the "target" number of restricted shares and does not include the right of the reporting person to receive up to 3,034 additional shares based on the achievement of certain performance-based criteria for the period from April 1, 2016 through March 31, 2017. The actual number of shares earned could be less than or greater than the target number, depending on the level of performance achieved, and all of the restricted shares granted are subject to forfeiture if minimum levels of performance are not met. Any restricted shares earned will not vest any earlier than in three equal installments on June 1, 2017, June 1, 2018 and June 1, 2019.
(2) Sales made pursuant to Reporting Person's 105b-1 trading plan.
(3) Sales of shares were made in thirty-seven separate transactions with prices ranging from $67.56 to $67.95 for a weighted average sales price of $67.7838.
(4) Includes 759 restricted shares granted pursuant to the Issuer's Amended and Restated 2008 Incentive Compensation Plan, as amended, in connection with achievement in excess of target of specified performance-based criteria for the performance period from April 1, 2015 through March 31, 2016, which restricted shares were not previously reported. The additional restricted shares vest in three equal installments on June 1, 2016, June 1, 2017 and June 1, 2018, subject to continued employment.

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