EXHIBIT 32.1
                                                                    ------------

         CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO 18 U.S.C.
             SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE
                           SARBANES-OXLEY ACT OF 2002


      In connection with the Quarterly Report on Form 10-Q of Boston Scientific
Corporation (the "Company") for the period ending September 30, 2003 as filed
with the Securities and Exchange Commission on the date hereof (the "Report"),
the undersigned Chief Executive Officer hereby certifies, pursuant to 18 U.S.C.
Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of
2002 that based on his knowledge:

(1)  the Report fully complies with the requirements of Section 13 (a) or 15 (d)
     of the Securities Exchange Act of 1934; and

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



By:   /s/ James R. Tobin
      ------------------------------------
      James R. Tobin
      President and Chief Executive Officer




      November 13, 2003