William Duffy
Acting
William Duffy is an actor.
Known For
The Mentalist
TSA Agent #2
It's Always Sunny in Philadelphia
Hedge Fund Guy
Criminal Minds
Dr. Larson
The West Wing
Staffer
Bosch
Vault Attendant
A West Wing Special to Benefit When We All Vote
Larry
The O.C.
(voice)
NCIS
Harris Cobb
Parenthood
Mr. Carlson
Heroes
ER Doctor
Beverly Hills, 90210
Doorman
Law & Order
CSU Technician
Hearts Afire
Doctor
Scandal
Ralph Greenwald
The Division
Commander Jackson
Carpoolers
Blast from the Past
Workman #1
Waist Deep
Newscaster #2
Brainstorm
Orderly (uncredited)
The Two Jakes
Desk Sergeant