John Mariano
John Mariano was born on August 5, 1960 in Astoria, New York, USA. He is an actor.
Known For
CSI: Miami
Davey Penrod
Desperate Housewives
Oliver Preston
JAG
Enrico Amati
The Sopranos
Ralph Giorgio
Married... with Children
Pete
The West Wing
Bertram
Young Sheldon
Envelope (voice)Young Sheldon
Richard Feynman (voice)
It's Always Sunny in Philadelphia
Johnny
ER
Leonard Apfenbach
Numb3rs
Derrick Lamberg (uncredited)