EXHIBIT 32.1

                            CERTIFICATION 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 filing of the Annual Report on Form 10-K for the fiscal
year ended January 1, 2005 (the Report) by Cerner Corporation (the Company), the
undersigned, as the Chief Executive Officer of the Company, hereby certifies
pursuant to 18 U.S.C. ss. 1350, as adopted pursuant to ss. 906 of the
Sarbanes-Oxley Act of 2002, that:

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

The information contained in the Report fairly presents, in all material
respects, the financial condition and results of operations of the Company.

                    /s/Neal L. Patterson

                    Neal L. Patterson, Chairman of the Board

                    and Chief Executive Officer

                    March 17, 2005

A signed original of this written statement required by Section 906 has been
provided to Cerner Corporation and will be retained by Cerner Corporation and
furnished to the Securities and Exchange Commission or its staff upon request.