Casey Siemaszko

Acting

Casey Siemaszko

Born March 17, 1961Chicago, Illinois, USA62 credits

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

Billions
7.7

Billions

TV

2016

Killing Kennedy
5.8

Killing Kennedy

Movie

2013

The Blacklist
7.6

The Blacklist

TV

2013

Elementary
7.6

Elementary

TV

2012

NYC 22
6.2

NYC 22

TV

2012

Person of Interest
8.1

Person of Interest

TV

2011

Filmography

Billions
2016Billionsas SeidsTV
Killing Kennedy
2013Killing Kennedyas Jack RubyMovie
The Blacklist
2013The Blacklistas Sam RaimoTV
Elementary
2012Elementaryas Michael McGeeTV
NYC 22
2012NYC 22as BlumeTV
Person of Interest
2011Person of Interestas Lester StricklandTV
Unforgettable
2011Unforgettableas Lt. Greg SartainTV
Blue Bloods
2010Blue Bloodsas Josh ThorpTV
White Collar
2009White Collaras Bertie SlavkinTV
Public Enemies
2009Public Enemiesas Harry BermanMovie
New Amsterdam
2008New Amsterdamas Peter HuygensTV
Damages
2007Damagesas Detective Dan WilliamsTV
The Boy Who Cried Bitch: The Adolescent Years
2007The Boy Who Cried Bitch: The Adolescent YearsMovie
The Inside
2005The Insideas Billy Ray PopeTV
Grand Theft Auto: San Andreas - The Introduction
2004Grand Theft Auto: San Andreas - The Introductionas Johnny Sindacco (voice) (uncredited)Movie
CSI: NY
2004CSI: NYas Paul SabotiniTV
T
2003The Street Lawyeras Rafter MayesMovie
Law & Order: Criminal Intent
2001Law & Order: Criminal Intentas Harvey GruenwaldTV
The Crew
2000The Crewas Young Bobby BartellemeoMovie
Law & Order: Special Victims Unit
1999Law & Order: Special Victims Unitas EPA OfficialTV
Limbo
1999Limboas Bobby GastineauMovie
Storm of the Century
1999Storm of the Centuryas Alton "Hatch" HatcherTV
Chameleon II: Death Match
1999Chameleon II: Death Matchas Jake BookerMovie
Together and Alone
1998Together and Aloneas BillyMovie
Oz
1997Ozas Detective TarnowskiTV
Rose Hill
1997Rose Hillas Fergus CarrollMovie
Bliss
1997Blissas TannerMovie
Chicago Sons
1997Chicago SonsTV
Mistrial
1996Mistrialas Detective Bobby ZitoMovie
The Phantom
1996The Phantomas MorganMovie
Black Scorpion
1995Black Scorpionas Dr. Goddard / The Breath TakerMovie
Napoleon
1995Napoleonas Conan (voice)Movie
Milk Money
1994Milk Moneyas CashMovie
My Life's in Turnaround
1994My Life's in Turnaroundas HimselfMovie
704 Hauser
1994704 HauserTV
Teresa's Tattoo
1994Teresa's Tattooas MichaelMovie
The Paint Job
1993The Paint Jobas CalMovie
The Adventures of Brisco County, Jr.
1993The Adventures of Brisco County, Jr.as Ned ZedTV
Of Mice and Men
1992Of Mice and Menas CurleyMovie
Near Mrs.
1992Near Mrs.as Colin PhippsMovie
The Big Slice
1991The Big Sliceas Mike SawyerMovie
The Chase
1991The Chaseas HutchinsonMovie
Law & Order
1990Law & Orderas Bart RaineyTV
Back to the Future Part II
1989Back to the Future Part IIas 3-DMovie
Breaking In
1989Breaking Inas Mike LafebbMovie
Young Guns
1988Young Gunsas Charley BowdreMovie
Biloxi Blues
1988Biloxi Bluesas Don CarneyMovie
Three O'Clock High
1987Three O'Clock Highas Jerry MitchellMovie
Gardens of Stone
1987Gardens of Stoneas WildmanMovie
American Harvest
1987American Harvestas DakotaMovie
Stand by Me
1986Stand by Meas Billy TessioMovie
Amazing Stories
1986Amazing Storiesas JonathanMovie
Miracle of the Heart: A Boys Town Story
1986Miracle of the Heart: A Boys Town Storyas Andy GraingerMovie
Amazing Stories
1985Amazing Storiesas JonathanTV
Back to the Future
1985Back to the Futureas 3-DMovie
Secret Admirer
1985Secret Admireras Roger DespardMovie
Silence of the Heart
1984Silence of the Heartas JeffMovie
Hard Knox
1984Hard Knoxas Aaron DavisMovie
Class
1983Classas DougMovie
St. Elsewhere
1982St. Elsewhereas Rick MessinaTV
The Facts of Life
1979The Facts of LifeTV
Hallmark Hall of Fame
1951Hallmark Hall of Fameas FergusTV