Person · Senate
Mark W.
Isakowitz
CHIEF OF STAFF — Office of Senator David Mccormick
Works forRDave H. McCormick · Republican · Pennsylvania
Chief of Staff to U.S. Senator David McCormick (R-PA) since January 2025. Previously served as Vice President of Government Affairs and Public Policy for Google (U.S. and Canada), 2019-2024. Veteran congressional staffer who served as Chief of Staff to U.S. Senator Rob Portman (R-OH) from 2014-2019, where he played key roles in passing the Tax Cuts and Jobs Act, opioid crisis legislation, and trade policy. Built and led the lobbying firm Fierce, Isakowitz & Blalock (1998-2014) as managing partner. Earlier served as Director of Federal Government Relations for the National Federation of Independent Business (1993-1997) and as Press Secretary to Congressman Paul Gillmor (1989-1993).
Last year's salary
Calendar year 2025
Career tenure
2 roles tracked
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$0 total
Career earnings
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Employment History
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Earlier career
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