William Duffy
William Duffy is an actor.
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Acted in
A West Wing Special to Benefit When We All Vote
2020
as Larry
Bosch
2015
as Vault Attendant
Scandal
2012
as Ralph Greenwald
Parenthood
2010
as Mr. Carlson
The Ascent
2010
as Thomas Shaw
The Mentalist
2008
as TSA Agent #2
Heroes
2006
as ER Doctor
Waist Deep
2006
as Newscaster #2
Karla
2006
as Detective Porter
Criminal Minds
2005
as Dr. Larson
It's Always Sunny in Philadelphia
2005
as Hedge Fund Guy
Sniper 3
2004
as Richard Addis
The O.C.
2003
as (voice)
American Dreams
2002
as Father Gregory
The West Wing
1999
as Staffer Larry
Blast from the Past
1999
as Workman #1
Double Tap
1997
as Gas Man
Betrayed by Love
1994
as Paxton
Hearts Afire
1992
as Doctor
Law & Order
1990
as CSU Technician
The Two Jakes
1990
as Desk Sergeant
Loving
1970
as Jay
Brainstorm
1965
as Orderly (uncredited)