FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF 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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1. Name and Address of Reporting Person *   Welling Glenn W. 2. Date of Event Requiring Statement (Month/Day/Year) 06/17/2015 3. Issuer Name and Ticker or Trading Symbol MEDIFAST INC [MED] (Last) (First) (Middle) C/O ENGAGED CAPITAL, LLC, 610 NEWPORT CENTER DR. SUITE 250 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) NEWPORT BEACH, CA 92660 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 Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 214,645 I By: Engaged Capital Master Feeder I, LP (1) Common Stock 421,621 I By: Engaged Capital Master Feeder II, LP (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Call Option (Right to Buy)	  (3)	06/30/2015	Common Stock	53,250	$ 24	I	By: Engaged Capital Master Feeder I, LP (1)
Call Option (Right to Buy)	  (3)	06/30/2015	Common Stock	46,750	$ 24	I	By: Engaged Capital Master Feeder II, LP (2)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Welling Glenn W. C/O ENGAGED CAPITAL, LLC 610 NEWPORT CENTER DR. SUITE 250 NEWPORT BEACH, CA 92660	  X	Â	Â	Â

Signatures

/s/ Jason L. Groves, Esq., attorney-in-fact		06/26/2015
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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)	Securities owned directly by Engaged Capital Master Feeder I, LP ("Engaged Capital Master I"). Mr. Welling, solely by virtue of his position as the founder and Chief Investment Officer ("CIO") of Engaged Capital, LLC ("Engaged Capital"), the general partner and investment advisor of Engaged Capital Master I, and as the sole member of Engaged Capital Holdings, LLC ("Engaged Holdings"), the managing member of Engaged Capital, may be deemed to beneficially own the securities owned directly by Engaged Capital Master I for purposes of Section 16. Mr. Welling expressly disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.
(2)	Securities owned directly by Engaged Capital Master Feeder II, LP ("Engaged Capital Master II"). Mr. Welling, solely by virtue of his position as the founder and CIO of Engaged Capital, the general partner and investment advisor of Engaged Capital Master II, and as the sole member of Engaged Holdings, the managing member of Engaged Capital, may be deemed to beneficially own the securities owned directly by Engaged Capital Master II for purposes of Section 16. Mr. Welling expressly disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.
(3)	The Call Opions reported herein are currently exercisable.
  Remarks: Exhibit List: Exhibit 24- Limited Power of Attorney

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