Person
William Duffy
Acting
Biography
William Duffy is an actor.
Known for
The Mentalist
TSA Agent #2
Law & Order
CSU Technician
NCIS
Harris Cobb
Criminal Minds
Dr. Larson
The West Wing
Staffer
Heroes
ER Doctor
Bosch
Vault Attendant
Beverly Hills, 90210
Doorman
It's Always Sunny in Philadelphia
Hedge Fund Guy
Scandal
Ralph Greenwald
Filmography
- 2020A West Wing Special to Benefit When We All VoteLarry
- 2015BoschVault Attendant
- 2012ScandalRalph Greenwald
- 2010ParenthoodMr. Carlson
- 2010The AscentThomas Shaw
- 2008The MentalistTSA Agent #2
- 2007Carpoolers
- 2006HeroesER Doctor
- 2006Waist DeepNewscaster #2
- 2006KarlaDetective Porter
- 2005Criminal MindsDr. Larson
- 2005It's Always Sunny in PhiladelphiaHedge Fund Guy
- 2004Sniper 3Richard Addis
- 2003NCISHarris Cobb
- 2003The O.C.(voice)
- 2002American DreamsFather Gregory
- 2001The DivisionCommander Jackson
- 1999The West WingStaffer
- 1999Blast from the PastWorkman #1
- 1997Double TapGas Man
- 1994Betrayed by LovePaxton
- 1992Hearts AfireDoctor
- 1990Beverly Hills, 90210Doorman
- 1990Law & OrderCSU Technician
- 1990The Two JakesDesk Sergeant
- 1977Death GameExecutive Producer
- 1970LovingJay
- 1965BrainstormOrderly (uncredited)
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