SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                                 SCHEDULE 13G
                                (Rule 13d-102)


             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULES 13d-1(b)(c), AND (d) AND AMENDMENTS THERETO FILED
                           PURSUANT TO RULE 13d-2(b)

                         (Amendment No.            )(1)


                              McKesson Corporation
- --------------------------------------------------------------------------------
                                (Name of Issuer)


                                   Common Par
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                   58155Q103
- --------------------------------------------------------------------------------
                                 (CUSIP Number)


                               December 31, 2001
- --------------------------------------------------------------------------------
            (Date of Event Which Requires Filing of this Statement)


     Check the  appropriate  box to  designate  the rule  pursuant to which this
Schedule is filed:

          [_]  Rule 13d-1(b)

          [_]  Rule 13d-(c)

          [_]  Rule 13d-1(d)


- ----------
(1)  The  remainder  of this  cover  page  shall be filled  out for a  reporting
     person's  initial  filing on this form with respect to the subject class of
     securities,  and for any subsequent amendment containing  information which
     would alter the disclosures provided in a prior cover page.

     The  information  required in the remainder of this cover page shall not be
deemed to be "filed"  for the purpose of Section 18 of the  Securities  Exchange
Act of 1934 or otherwise  subject to the  liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).


(SC13G-07/99)



CUSIP No.                             13G                    Page    of    Pages


________________________________________________________________________________
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     McKesson Corporation Master Trust ID# 13-1027923

________________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [_]
                                                                 (b)  [_]

________________________________________________________________________________
3.   SEC USE ONLY



________________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     JPMorgan Chase - New York

________________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           0
               _________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY          16,258,868
               _________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         0
               _________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH            16,258,868
________________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     16,258,868

________________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          [_]

________________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     5.69%

________________________________________________________________________________
12.  TYPE OF REPORTING PERSON*

     JPM - BK
     PLAN - DC
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


CUSIP No.                             13G                    Page    of    Pages

________________________________________________________________________________
Item 1(a).  Name of Issuer:

McKesson Corporation

________________________________________________________________________________
Item 1(b).  Address of Issuer's Principal Executive Offices:

One Post Street
San Francisco, CA 94104

________________________________________________________________________________
Item 2(a).  Name of Person Filing:

JPMorgan Chase as Trustee For

________________________________________________________________________________
Item 2(b).  Address of Principal Business Office, or if None, Residence:

270 Park Avenue
New York, NY 10017

________________________________________________________________________________
Item 2(c).  Citizenship:

JPMorgan Chase - New York

________________________________________________________________________________
Item 2(d).  Title of Class of Securities:

Common Par

________________________________________________________________________________
Item 2(e).  CUSIP Number:

58155Q103

________________________________________________________________________________
Item 2(e)

This notice is filed by JPMorgan Chase and Mckesson Profit Sharing Investment
Plan (the Plan) and Trust created pursuant thereto (collectively, the filing
persons)

________________________________________________________________________________
Item 3.     If This Statement  is Filed  Pursuant to  Rule 13d-1(b), or 13d-2(b)
            or (c), Check Whether the Person Filing is a:

     (a)  [_]  Broker or dealer registered under Section 15 of the Exchange Act.

     (b)  [X]  Bank as defined in Section 3(a)(6) of the Exchange Act.

     (c)  [_]  Insurance  company as defined in Section 3(a)(19) of the Exchange
               Act.

     (d)  [_]  Investment  company  registered under Section 8 of the Investment
               Company Act.

     (e)  [_]  An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);

     (f)  [X]  An employee  benefit plan or endowment  fund in  accordance  with
               Rule 13d-1(b)(1)(ii)(F);

     (g)  [_]  A parent  holding  company or control  person in accordance  with
               Rule 13d-1(b)(1)(ii)(G);

     (h)  [_]  A savings  association  as defined in Section 3(b) of the Federal
               Deposit Insurance Act;

     (i)  [_]  A  church  plan  that  is  excluded  from  the  definition  of an
               investment  company  under  Section  3(c)(14)  of the  Investment
               Company Act;

     (j)  [_]  Group, in accordance with Rule 13d-1(b)(1)(ii)(J).


     If this statement is filed pursuant to Rule 13d-1(c), check this box.   [_]





CUSIP No.                             13G                    Page    of    Pages


Item 4.  Ownership.

     Provide  the  following  information  regarding  the  aggregate  number and
percentage of the class of securities of the issuer identified in Item 1.

     (a)  Amount beneficially owned: 16,258,868


     (b)  Percent of class: 5.69%


     (c)  Number of shares as to which such person has:

          (i)   Sole power to vote or to direct the vote    0 ,


          (ii)  Shared power to vote or to direct the vote  16,258,868,

          (iii) Sole power to dispose or to direct the disposition of   0 ,


          (iv)  Shared power to dispose or to direct the disposition of
                16,258,868

The plan and trust created pursuant thereto share the power to dispose or
direct the disposition of 16,258,868 shares of common stock.

The 16,258,868 shares of Common Stock are held in the Trust created pursuant to
the Mckesson Master Trust Agreement, dated January 1, 1988, (and as subsequently
amended) between JPMorgan Chase as the Master Trustee (the Master Trustee) and
Mckesson Corporation, for the benefit of participants in the Plan (Trust).

Except as set forth below, the Master Trustee is obligated under terms of the
Trust and the Terms of the Plan, to vote, tender, or exchange any Common Stock
beneficially owned by the Trust as directed by Participants in the Plan (the
Participants).

For this purpose, each Participant acts in the capacity of a named Fiduciary
with respect to all shares of Common Stock as to which such Participant has the
rights of direction with respect to voting, exchange and any other rights
appurtenant to such stock.

Under the terms of the Trust, the Master Trustee will vote shares of Common
Stock allocated to the accounts of Participants in accordance with the
instructions given by such Participants. Unallocated shares of Common Stock,
together with any allocated shares for which no instructions are received
(except for certain shares of Common Stock allocated to Participant accounts
under the PAYSOP feature of the Plan (the PAYSOP shares), are voted by the
Master Trustee in the same proportion as the shares of Common Stock for which
instructions are received.

The administrators of the Plan may cause the Master Trustee to dispose of shares
of Common Stock under certain limited circumstances.

The actions of the Master Trustee under the terms of the Trust, including but
not limited to the provisions described above, are subject to the requirements
of ERISA.

________________________________________________________________________________
Item 5.  Ownership of Five Percent or Less of a Class.




________________________________________________________________________________
Item 6.  Ownership of More Than Five Percent on Behalf of Another Person.



________________________________________________________________________________
Item 7.  Identification and Classification of the Subsidiary Which Acquired the
         Security Being Reported on by the Parent Holding Company.



________________________________________________________________________________
Item 8.  Identification and Classification of Members of the Group.



________________________________________________________________________________
Item 9.  Notice of Dissolution of Group.



________________________________________________________________________________
Item 10.  Certifications.

     (a)  The  following  certification  shall be included if the  statement  is
          filed pursuant to Rule 13d-1(b):

          "By signing  below I certify  that,  to the best of my  knowledge  and
          belief, the securities referred to above were acquired and are held in
          the ordinary course of business and were not acquired and not held for
          the  purpose  of or with the effect of  changing  or  influencing  the
          control of the issuer of the  securities and were not acquired and are
          not held in  connection  with or as a participant  in any  transaction
          having such purpose or effect."


     (b)  The  following  certification  shall be included if the  statement  is
          filed pursuant to Rule 13d-1(c):

          "By signing  below I certify  that,  to the best of my  knowledge  and
          belief, the securities referred to above were not acquired and are not
          held for the purpose of or with the effect of changing or  influencing
          the control of the issuer of the  securities and were not acquired and
          are not held in connection with or as a participant in any transaction
          having such purpose or effect."





                                    SIGNATURE

     After  reasonable  inquiry and to the best of my  knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.


                                                   February 14, 2002
                                        ----------------------------------------
                                                        (Date)


                                                 /s/   Edward Semlies
                                        ----------------------------------------
                                                      (Signature)


                                         Edward Semlies/Assistant Vice President
                                        ----------------------------------------
                                                      (Name/Title)



Note.  Schedules  filed in paper format shall include a signed original and five
copies of the  schedule,  including  all  exhibits.  See Rule 13d-7(b) for other
parties for whom copies are to be sent.

Attention.  Intentional  misstatements  or omissions of fact constitute  federal
criminal violations (see 18 U.S.C. 1001).