Tom Irwin

Biography

Tom Irwin (born June 1, 1956) is an American film, television, and stage actor.

Known For

Grey's Anatomy

as Marty Hancock

Marley & Me

as Dr. Sherman

Lost

as Dan Norton

Law & Order: Special Victims Unit

as Roger Briggs

Law & Order: Special Victims Unit

as Jerry Bullard

21 Grams

as Dr. Jones

Castle

as Simon Campbell

Ghost Whisperer

as Steve Harper

How to Get Away with Murder

as Mark Spivey

Amsterdam

as Mr. Belport