
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 Vi…

Mayans M.C.
as Chuck 'Chucky' Marstein · 13 ep.

Good Game
as Lorenzo Santella Jr. · 6 ep.

NCIS: Los Angeles
as Frank Davis · 1 ep.

Sons of Anarchy
as Chuck 'Chucky' Marstein · 46 ep.

Law & Order: Criminal Intent
as Florist · 1 ep.

Law & Order: Special Victims Unit
as Charles Denis · 1 ep.

Third Watch
as Banks · 2 ep.

Homicide: Life on the Street
as Detective Bonaventura · 2 ep.

Law & Order
as Eugene Miller · 1 ep.

Seinfeld
as Waiter · 1 ep.
Crossing Delancey
1988