Marshall Dennehey, P.C.

$380.1M revenue • 1,001 employees • 620 Freedom Business Center Dr Suite 405, King of Prussia, PA, 19406, United States

Last Updated Oct 28, 2025

Company Overview

Company Name

Marshall Dennehey, P.C.

Address

620 Freedom Business Center Dr Suite 405, King of Prussia, PA, 19406, United States

Approx. Annual Revenue

$380.1M

Employees

1,001

Established

1999

About Marshall Dennehey, P.C.

Marshall Dennehey is an Am Law 200 firm based in King of Prussia, Pennsylvania, with approximately 1,001 employees. Established in 1999, the firm defends and resolves legal disputes for clients in civil litigation, with a focus on areas such as casualty, professional liability, healthcare, and workers' compensation.

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Michael Archibald Managing Attorney
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Mark Thompson President & CEO
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Bradley Blyston Managing Attorney
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Robert Fitzgerald Managing Attorney
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Adam Calvert Partner
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Howard Mankoff Litigation Partner
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Bill Gianaris Managing Partner
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Thomas Brophy President
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