Casey Siemaszko

Known for: Acting

Born: 1961-03-17 (age 65)

From: 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.

Filmography (62)

TV★ 7.8
Billions
2016
as Seids
MOVIE★ 5.8
Killing Kennedy
2013
as Jack Ruby
TV★ 7.6
The Blacklist
2013
as Sam Raimo
TV★ 7.6
Elementary
2012
as Michael McGee
TV★ 6.2
NYC 22
2012
as Blume
TV★ 8.1
Person of Interest
2011
as Lester Strickland
TV★ 7.2
Unforgettable
2011
as Lt. Greg Sartain
TV★ 7.8
Blue Bloods
2010
as Josh Thorp
TV★ 8.2
White Collar
2009
as Bertie Slavkin
MOVIE★ 6.7
Public Enemies
2009
as Harry Berman
TV★ 7.1
New Amsterdam
2008
as Peter Huygens
TV★ 7.4
Damages
2007
as Detective Dan Williams
MOVIE
The Boy Who Cried Bitch: The Adolescent Years
2007
TV★ 7.3
The Inside
2005
as Billy Ray Pope
MOVIE★ 6.8
Grand Theft Auto: San Andreas - The Introduction
2004
as Johnny Sindacco (voice) (uncredited)
TV★ 7.3
CSI: NY
2004
as Paul Sabotini
MOVIE★ 7.0
The Street Lawyer
2003
as Rafter Mayes
TV★ 7.6
Law & Order: Criminal Intent
2001
as Harvey Gruenwald
MOVIE★ 5.4
The Crew
2000
as Young Bobby Bartellemeo
TV★ 8.0
Law & Order: Special Victims Unit
1999
as EPA Official
MOVIE★ 6.6
Limbo
1999
as Bobby Gastineau
TV★ 7.0
Storm of the Century
1999
as Alton "Hatch" Hatcher
MOVIE★ 3.3
Chameleon II: Death Match
1999
as Jake Booker
MOVIE★ 8.0
Together and Alone
1998
as Billy
TV★ 8.1
Oz
1997
as Detective Tarnowski
MOVIE★ 6.5
Rose Hill
1997
as Fergus Carroll
MOVIE★ 6.3
Bliss
1997
as Tanner
TV★ 8.6
Chicago Sons
1997
MOVIE★ 5.3
Mistrial
1996
as Detective Bobby Zito
MOVIE★ 5.3
The Phantom
1996
as Morgan
MOVIE★ 5.5
Black Scorpion
1995
as Dr. Goddard / The Breath Taker
MOVIE★ 6.2
Napoleon
1995
as Conan (voice)
MOVIE★ 6.5
Milk Money
1994
as Cash
MOVIE★ 4.8
My Life's in Turnaround
1994
as Himself
TV★ 9.0
704 Hauser
1994
MOVIE★ 4.9
Teresa's Tattoo
1994
as Michael
MOVIE★ 4.6
The Paint Job
1993
as Cal
TV★ 7.1
The Adventures of Brisco County, Jr.
1993
as Ned Zed
MOVIE★ 7.3
Of Mice and Men
1992
as Curley
MOVIE★ 6.0
Near Mrs.
1992
as Colin Phipps
MOVIE★ 4.5
The Big Slice
1991
as Mike Sawyer
MOVIE★ 4.0
The Chase
1991
as Hutchinson
TV★ 7.3
Law & Order
1990
as Bart Rainey
MOVIE★ 7.8
Back to the Future Part II
1989
as 3-D
MOVIE★ 5.7
Breaking In
1989
as Mike Lafebb
MOVIE★ 6.7
Young Guns
1988
as Charley Bowdre
MOVIE★ 6.2
Biloxi Blues
1988
as Don Carney
MOVIE★ 6.8
Three O'Clock High
1987
as Jerry Mitchell
MOVIE★ 6.2
Gardens of Stone
1987
as Wildman
MOVIE★ 9.0
American Harvest
1987
as Dakota
MOVIE★ 7.8
Stand by Me
1986
as Billy Tessio
MOVIE★ 6.2
Amazing Stories
1986
as Jonathan
MOVIE★ 5.0
Miracle of the Heart: A Boys Town Story
1986
as Andy Grainger
TV★ 7.5
Amazing Stories
1985
as Jonathan
MOVIE★ 8.3
Back to the Future
1985
as 3-D
MOVIE★ 6.7
Secret Admirer
1985
as Roger Despard
MOVIE★ 6.8
Silence of the Heart
1984
as Jeff
MOVIE★ 6.5
Hard Knox
1984
as Aaron Davis
MOVIE★ 5.9
Class
1983
as Doug
TV★ 5.7
St. Elsewhere
1982
as Rick Messina
TV★ 7.1
The Facts of Life
1979
TV★ 8.8
Hallmark Hall of Fame
1951
as Fergus