Initial Statement of Beneficial Ownership (3)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^*

Schechter Lori A.

2. Date of Event Requiring Statement (MM/DD/YYYY) 6/27/2014

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 /

(Street)

SAN FRANCISCO, CA

(City) (State) (Zip)

5. If Amendment, Date Original Filed (MM/DD/YYYY)

6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

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

*Table II - Derivative Securities Beneficially Owned ( e.g.* , puts, calls, warrants, options, convertible securities)**
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		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)
1. Title of Derivate Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security		6. Nature of Indirect Beneficial Ownership (Instr. 5)
Employee Stock Options (Right-to-Buy)	⁽²⁾	1/24/2019	Common Stock	10000	$76.55	D
Restricted Stock Units (RSUs)	⁽³⁾	⁽³⁾	Common Stock	13064	$0	D
Employee Stock Options (Right-to-Buy)	⁽⁴⁾	5/22/2019	Common Stock	3490	$87.24	D
Restricted Stock Units (RSUs)	⁽⁵⁾	⁽⁵⁾	Common Stock	2180	$0	D
Restricted Stock Units (RSUs)	⁽⁵⁾	⁽⁵⁾	Common Stock	174	$0	D
Employee Stock Options (Right-to-Buy)	⁽⁶⁾	5/21/2020	Common Stock	3775	$118.41	D
Restricted Stock Units (RSUs)	⁽⁷⁾	⁽⁷⁾	Common Stock	1935	$0	D
Employee Stock Options (Right-to-Buy)	⁽⁸⁾	5/27/2021	Common Stock	3000	$183.37	D
Restricted Stock Units (RSUs)	⁽⁹⁾	⁽⁹⁾	Common Stock	1898	$0	D

Explanation of Responses:
( 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.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	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		7/3/2014
^** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	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).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.