Ownership Submission
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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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Schechter Lori A.
 2. Date of Event Requiring Statement (Month/Day/Year)
06/27/2014		 3. Issuer Name and Ticker or Trading Symbol
MCKESSON CORP [MCK]
(Last)
(First)
(Middle)
ONE POST STREET		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
EVP, GC & Chief Compl. Officer
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

SAN FRANCISCO, CA 		 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 686.3503 (1)
D
 

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
Employee Stock Options (Right-to-Buy)   (2) 01/24/2019 Common Stock 10,000 $ 76.55 D  
Restricted Stock Units (RSUs)   (3)   (3) Common Stock 13,064 $ 0 D  
Employee Stock Options (Right-to-Buy)   (4) 05/22/2019 Common Stock 3,490 $ 87.24 D  
Restricted Stock Units (RSUs)   (5)   (5) Common Stock 2,180 $ 0 D  
Restricted Stock Units (RSUs)   (5)   (5) Common Stock 174 $ 0 D  
Employee Stock Options (Right-to-Buy)   (6) 05/21/2020 Common Stock 3,775 $ 118.41 D  
Restricted Stock Units (RSUs)   (7)   (7) Common Stock 1,935 $ 0 D  
Employee Stock Options (Right-to-Buy)   (8) 05/27/2021 Common Stock 3,000 $ 183.37 D  
Restricted Stock Units (RSUs)   (9)   (9) Common Stock 1,898 $ 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Schechter Lori A.
ONE POST STREET
SAN FRANCISCO, CA 		       EVP, GC & Chief Compl. Officer  

Signatures

Donna Spinola, Attorney-in-fact 07/03/2014
**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) Includes 686.3503 shares purchased under the Issuer's Employee Stock Purchase Plan.
(2) This option granted 01/24/2012 vests 25% over four years commencing on the 1st anniversary of the grant date.
(3) These RSUs vest 100% on 01/24/2016.
(4) This option granted 05/22/2012 vests 25% over four years commencing on the 1st anniversary of the grant date.
(5) These RSUs vest 100% on 05/24/2015.
(6) This option granted 05/21/2013 vests 25% over four years commencing on the 1st anniversary of the grant date.
(7) These RSUs vest 100% on 05/21/2016.
(8) This option granted 05/27/2014 vests 25% over four years commencing on the 1st anniversary of the grant date.
(9) These RSUs vest 100% on 05/27/2017.

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