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Personal Info
Known For
Acting
Birthday
March 17, 1961
Place of Birth
Chicago, Illinois, USA
Also Known As
- Kazimierz A. Siemaszko
- Kazimierz Andrew Siemaszko
- Kazimierz Andrzej Siemaszko
- Kazimierz Siemaszko
Casey Siemaszko
1.4 Popularity
Biography
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.
Known For
Credits
Billions
2016
7.8
Killing Kennedy
as Jack Ruby
2013
5.8
The Blacklist
as Sam Raimo
2013
7.6
Elementary
as Michael McGee
2012
7.6
NYC 22
as Blume
2012
6.2
Person of Interest
as Lester Strickland
2011
8.1
Unforgettable
as Lt. Greg Sartain
2011
7.2
Blue Bloods
as Josh Thorp
2010
7.8
White Collar
as Bertie Slavkin
2009
8.2
Public Enemies
as Harry Berman
2009
6.7
New Amsterdam
as Peter Huygens
2008
7.2
Damages
as Detective Dan Williams
2007
7.4
The Boy Who Cried Bitch: The Adolescent Years
2007
0.0
The Inside
as Billy Ray Pope
2005
7.2
Grand Theft Auto: San Andreas - The Introduction
as Johnny Sindacco (voice) (uncredited)
2004
9.7
CSI: NY
as Paul Sabotini
2004
7.4
🎬
The Street Lawyer
as Rafter Mayes
2003
0.0
Law & Order: Criminal Intent
as Harvey Gruenwald
2001
7.6
The Crew
as Young Bobby Bartellemeo
2000
5.2
Law & Order: Special Victims Unit
as EPA Official
1999
7.9
Limbo
as Bobby Gastineau
1999
6.5
Storm of the Century
as Alton "Hatch" Hatcher
1999
7.0
Chameleon II: Death Match
as Jake Booker
1999
2.4
Together and Alone
as Billy
1998
6.0
Oz
as Detective Tarnowski
1997
8.0
Rose Hill
as Fergus Carroll
1997
6.5
Bliss
as Tanner
1997
5.4
Chicago Sons
1997
8.5
Mistrial
as Detective Bobby Zito
1996
5.1
The Phantom
as Morgan
1996
5.3
Black Scorpion
as Dr. Goddard / The Breath Taker
1995
5.6
Napoleon
as Conan (voice)
1995
6.1
Milk Money
as Cash
1994
6.4
My Life's in Turnaround
as Himself
1994
4.0
704 Hauser
1994
0.0
Teresa's Tattoo
as Michael
1994
4.6
The Paint Job
as Cal
1993
3.8
The Adventures of Brisco County, Jr.
as Ned Zed
1993
7.0
Of Mice and Men
as Curley
1992
7.2
Near Mrs.
as Colin Phipps
1992
5.5
The Big Slice
as Mike Sawyer
1991
3.7
The Chase
as Hutchinson
1991
2.7
Law & Order
as Bart Rainey
1990
7.4
Law & Order
as Defense Attorney Shuman
1990
7.4
Back to the Future Part II
as 3-D
1989
7.8
Breaking In
as Mike Lafebb
1989
5.5
Young Guns
as Charley Bowdre
1988
6.7
Biloxi Blues
as Don Carney
1988
6.2
Three O'Clock High
as Jerry Mitchell
1987
6.8
Gardens of Stone
as Wildman
1987
6.2
American Harvest
as Dakota
1987
0.0
Stand by Me
as Billy Tessio
1986
7.8
Amazing Stories
as Jonathan
1986
6.5
Miracle of the Heart: A Boys Town Story
as Andy Grainger
1986
1.0
Amazing Stories
as Jonathan
1985
7.4
Back to the Future
as 3-D
1985
8.3
Secret Admirer
as Roger Despard
1985
6.7
Silence of the Heart
as Jeff
1984
6.4
Hard Knox
as Aaron Davis
1984
5.7
Class
as Doug
1983
6.0
St. Elsewhere
as Rick Messina
1982
5.6
The Facts of Life
1979
7.1
Hallmark Hall of Fame
as Fergus
1951
8.6