
Acting
Ornstein studied acting as a child at the American Academy of Dramatic Arts in New York City, and later studied under Stella Adler. After high school, he enrolled in the Mason Gross School of the Arts. He quit after his first year and moved to New York City to begin working professionally. Ornstein's first film credit was in Crossing Delancey, where he played the minor character "Mickey". Television credits include a recurring role as Detective Bonnaventura on Homicide: Life on the Street, and a two-episode arc on Third Watch, as well as parts in Seinfeld, Law & Order, Law & Order: Special Victims Unit, and Law & Order: Criminal Intent. Ornstein's stage acting credits span twenty-five years worth of new plays in New York City, in addition to creating the role of Louis Ironson in the 1991 World Premiere of Angels in America at the Eureka Theater in San Francisco. Ornstein plays Chuck Marstein on Sons of Anarchy.
movieMosquito
2022
Butcher
tvMayans M.C.
2018
Chuck 'Chucky' Marstein
tvGood Game
2017
Lorenzo Santella Jr.
movieThe Saint
2017
Kal Barko
movieZelos
2015
Mordecai
tvNCIS: Los Angeles
2009
Frank Davis
tvSons of Anarchy
2008
Chuck 'Chucky' Marstein
tvLaw & Order: Criminal Intent
2001
Howard / Philip / Florist
movieLet It Snow
1999
Lenny Ellis
tvThird Watch
1999
Banks
tvLaw & Order: Special Victims Unit
1999
Charles Denis
movieThe Book of Life
1998
Computer Wizard
movieKansas City
1996
Jackie Ciro
movieMan of the Year
1995
Mike Miller
tvHomicide: Life on the Street
1993
Detective Bonaventura
movieBlindsided
1993
Det. Sartucci
tvLaw & Order
1990
Sklar / Eugene Miller
tvSeinfeld
1989
Waiter