William Duffy
Acting
Biography
William Duffy is an actor.
Known For
Popular credits
8.3
The Mentalist
TSA Agent #2
8.3
Criminal Minds
Dr. Larson
7.5
Heroes
ER Doctor
7.6
NCIS
Harris Cobb
8.3
It's Always Sunny in Philadelphia
Hedge Fund Guy
6.8
Blast from the Past
Workman #1
7.7
The O.C.
(voice)
7.3
Beverly Hills, 90210
Doorman
7.9
Bosch
Vault Attendant
7.3
Law & Order
CSU Technician
7.2
Scandal
Ralph Greenwald
8.2
The West Wing
Staffer
6.5
Waist Deep
Newscaster #2
6.0
The Two Jakes
Desk Sergeant
7.5
Parenthood
Mr. Carlson
5.5
Sniper 3
Richard Addis
5.4
Karla
Detective Porter
6.0
Brainstorm
Orderly (uncredited)
7.9
A West Wing Special to Benefit When We All Vote
Larry
5.8
Loving
Jay