Acting

Casey Siemaszko

Born 1961-03-17 · Chicago, Illinois, USA

Casey Siemaszko (born Kazimierz A. Siemaszko) is a Polish-American actor and the brother of actress Nina Siemaszko. The son of a fighter in the Polish Underground who survived the Sachsenhausen concentration camp, Siemaszko narrated the 1998 feature, The Polish-Americans. Siemaszko was a graduate of the Goodman School of Drama at DePaul University in Chicago, which his sister, Nina Siemaszko later also attended. His acting career consists of smaller roles in dozen of popular films, including Back to the Future, Young Guns, Silence of the Heart, Of Mice and Men, Killing Kennedy, Back to the Future Part II and Stand By Me.

Credits

Newest first

Billions
as Seids
2016
Killing Kennedy
as Jack Ruby
2013
The Blacklist
as Sam Raimo
2013
Elementary
as Michael McGee
2012
NYC 22
as Blume
2012
Person of Interest
as Lester Strickland
2011
Unforgettable
as Lt. Greg Sartain
2011
Blue Bloods
as Josh Thorp
2010
White Collar
as Bertie Slavkin
2009
Public Enemies
as Harry Berman
2009
New Amsterdam
as Peter Huygens
2008
Damages
as Detective Dan Williams
2007
The Boy Who Cried Bitch: The Adolescent Years
2007
The Inside
as Billy Ray Pope
2005
Grand Theft Auto: San Andreas - The Introduction
as Johnny Sindacco (voice) (uncredited)
2004
CSI: NY
as Paul Sabotini
2004
The Street Lawyer
as Rafter Mayes
2003
Law & Order: Criminal Intent
as Harvey Gruenwald
2001
The Crew
as Young Bobby Bartellemeo
2000
Law & Order: Special Victims Unit
as EPA Official
1999
Limbo
as Bobby Gastineau
1999
Storm of the Century
as Alton "Hatch" Hatcher
1999
Chameleon II: Death Match
as Jake Booker
1999
Together and Alone
as Billy
1998
Oz
as Detective Tarnowski
1997
Rose Hill
as Fergus Carroll
1997
Bliss
as Tanner
1997
Chicago Sons
1997
Mistrial
as Detective Bobby Zito
1996
The Phantom
as Morgan
1996
Black Scorpion
as Dr. Goddard / The Breath Taker
1995
Napoleon
as Conan (voice)
1995
Milk Money
as Cash
1994
My Life's in Turnaround
as Himself
1994
704 Hauser
1994
Teresa's Tattoo
as Michael
1994
The Paint Job
as Cal
1993
The Adventures of Brisco County, Jr.
as Ned Zed
1993
Of Mice and Men
as Curley
1992
Near Mrs.
as Colin Phipps
1992
The Big Slice
as Mike Sawyer
1991
The Chase
as Hutchinson
1991
Law & Order
as Bart Rainey
1990
Law & Order
as Defense Attorney Shuman
1990
Back to the Future Part II
as 3-D
1989
Breaking In
as Mike Lafebb
1989
Young Guns
as Charley Bowdre
1988
Biloxi Blues
as Don Carney
1988
Three O'Clock High
as Jerry Mitchell
1987
Gardens of Stone
as Wildman
1987
American Harvest
as Dakota
1987
Stand by Me
as Billy Tessio
1986
Amazing Stories
as Jonathan
1986
Miracle of the Heart: A Boys Town Story
as Andy Grainger
1986
Amazing Stories
as Jonathan
1985
Back to the Future
as 3-D
1985
Secret Admirer
as Roger Despard
1985
Silence of the Heart
as Jeff
1984
Hard Knox
as Aaron Davis
1984
Class
as Doug
1983
St. Elsewhere
as Rick Messina
1982
The Facts of Life
1979
Hallmark Hall of Fame
as Fergus
1951