Known For
Acting
Credits
28 titles
William Duffy
Biography
William Duffy is an actor.
Known For
Filmography
A West Wing Special to Benefit When We All Vote
Larry
Bosch
Vault Attendant
Scandal
Ralph Greenwald
Parenthood
Mr. Carlson
The Ascent
Thomas Shaw
The Mentalist
TSA Agent #2
Carpoolers
Heroes
ER Doctor
Waist Deep
Newscaster #2
Karla
Detective Porter
Criminal Minds
Dr. Larson
It's Always Sunny in Philadelphia
Hedge Fund Guy
Sniper 3
Richard Addis
NCIS
Harris Cobb
The O.C.
(voice)
American Dreams
Father Gregory
The Division
Commander Jackson
The West Wing
Staffer
Blast from the Past
Workman #1
Double Tap
Gas Man
Betrayed by Love
Paxton
Hearts Afire
Doctor
Beverly Hills, 90210
Doorman
Law & Order
CSU Technician
The Two Jakes
Desk Sergeant
Death Game
Executive Producer
Loving
Jay
Brainstorm
Orderly (uncredited)