Exhibit 99.1

                CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350

Pursuant to 18 U.S.C. Section 1350, the undersigned officer of Respironics, Inc.
(the "Corporation"), hereby certifies, to the best of his knowledge, that the
Corporation's Quarterly Report on Form 10-Q for the quarter ended September 30,
2002 (the "Report") fully complies with the requirements of Section 13(a) or
15(d), as applicable, of the Securities Exchange Act of 1934 and that the
information contained in the Report fairly presents, in all material respects,
the financial condition and results of operations of the Corporation.

Dated:  November 14,2002

/s/ James W. Liken
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Name: James W. Liken
Title:  President and Chief Executive Officer