Exhibit 32.01

         I, Robert D. Walter, Chairman and Chief Executive Officer, of Cardinal
Health, Inc. (the "Company"), certify, pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, that:

(1)      the Quarterly report on Form 10-Q for the fiscal quarter ended December
         31, 2003, (the "Periodic Report") containing the financial statements
         of the Company, which this statement accompanies, fully complies with
         the requirements of Section 13(a) or 15(d) of the Securities Exchange
         Act of 1934 (15 U.S.C. 78m), and

(2)      the information contained in the Periodic Report fairly presents, in
         all material respects, the financial condition and results of
         operations of the Company.

Dated: February 17, 2004

                                    /s/ Robert D. Walter
                                    -------------------------
                                    Robert D. Walter
                                    Chairman, and
                                    Chief Executive Officer