Exhibit 99.1

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

The undersigned as Chief Operating Officer and Chief Financial Officer of the
Company, does hereby certify that the foregoing Quarterly Report of
CLAIMSNET.COM INC. (the "Company") on Form 10-Q for the period ending June 30,
2003 (the "Report"):

         (1)      Fully complies with the requirements of section 13 or 15(d) of
                  the Securities Exchange Act of 1934; and

         (2)      Fairly presents, in all material respects, the financial
                  condition and result of operations of the Company.

/s/ Don Crosbie
- --------------------
Don Crosbie
President and Chief Executive Officer
July 28, 2003

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

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