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

       In connection with the Quarterly Report of Integral Systems, Inc. (the
"Company") on Form 10-Q for the quarter ending June 30, 2002, as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), I, Steven
R. Chamberlain the Chief Executive Officer of the Company, certify, pursuant to
and for purposes of 18 U.S.C. Section 1350, as adopted pursuant to Section 906
of the Sarbanes-Oxley Act of 2002, that:

     (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 the Company.


            /s/
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Steven R. Chamberlain
Chief Executive Officer
Date: August 14, 2002

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