Casey Siemaszko
Known for
An American character actor born in Chicago, Casey Siemaszko was a familiar young face in 1980s cinema. He played one of Biff's henchmen in 'Back to the Future' (1985) and its sequel (1989), one of the boys in Rob Reiner's 'Stand by Me' (1986), and a doomed gunfighter in 'Young Guns' (1988). He went on to steady supporting work across film and television. A reliable, unshowy performer, he specialized in ordinary young men and regular guys rather than star turns.
Casey Siemaszko
28 Movies
20 Series
An American character actor born in Chicago, Casey Siemaszko was a familiar young face in 1980s cinema. He played one of Biff's henchmen in 'Back to the Future' (1985) and its sequel (1989), one of the boys in Rob Reiner's 'Stand by Me' (1986), and a doomed gunfighter in 'Young Guns' (1988). He went on to steady supporting work across film and television. A reliable, unshowy performer, he specialized in ordinary young men and regular guys rather than star turns.
Movies
Plays 3-D
Back to the Future
1985
Plays Billy Tessio
Stand by Me
1986
Plays 3-D
Back to the Future Part II
1989
Plays Charley Bowdre
Young Guns
1988
Plays Harry Berman
Public Enemies
2009
Plays Morgan
The Phantom
1996
Plays Cash
Milk Money
1994
Plays Curley
Of Mice and Men
1992
Plays Roger Despard
Secret Admirer
1985
Plays Don Carney
Biloxi Blues
1988
Plays Conan (voice)
Napoleon
1995
Plays Doug
Class
1983
Plays Young Bobby Bartellemeo
The Crew
2000
Plays Jerry Mitchell
Three O'Clock High
1987
Plays Bobby Gastineau
Limbo
1999
Plays Tanner
Bliss
1997
Plays Dr. Goddard / The Breath Taker
Black Scorpion
1995
Plays Wildman
Gardens of Stone
1987
Plays Jack Ruby
Killing Kennedy
2013
Plays Colin Phipps
Near Mrs.
1992
Plays Mike Lafebb
Breaking In
1989
Plays Michael
Teresa's Tattoo
1994
Plays Cal
The Paint Job
1993
Plays Aaron Davis
Hard Knox
1984
Plays Mike Sawyer
The Big Slice
1991
TV Shows
Plays Detective Dan Williams
Damages
2007
Plays Rick Messina
St. Elsewhere
1982
Plays Alton "Hatch" Hatcher
Storm of the Century
1999
Plays Detective Tarnowski
Oz
1997
Plays Peter Huygens
New Amsterdam
2008
Plays Paul Sabotini
CSI: NY
2004
Plays Billy Ray Pope
The Inside
2005
Plays Fergus
Hallmark Hall of Fame
1951
Plays Harvey Gruenwald
Law & Order: Criminal Intent
2001
Plays Michael McGee
Elementary
2012
Plays Lester Strickland
Person of Interest
2011
Plays Sam Raimo
The Blacklist
2013
Plays Josh Thorp
Blue Bloods
2010
Plays Bertie Slavkin
White Collar
2009
Plays Jonathan
Amazing Stories
1985
Plays Bart Rainey
Law & Order
1990
Plays Seids
Billions
2016
Plays Lt. Greg Sartain
Unforgettable
2011
Plays Ned Zed
The Adventures of Brisco County, Jr.
1993
Plays Blume
NYC 22
2012
Latest Trailers
Watch Trailer
Killing Kennedy
Full Filmography
Billions
Seids · 1 episode
2016–
TV
Person of Interest
Lester Strickland · 1 episode
2013–2014
TV
The Blacklist
Sam Raimo · 1 episode
2013–2014
TV
Killing Kennedy
Jack Ruby
2013
Film
Elementary
Michael McGee · 1 episode
2012
TV
Blue Bloods
Josh Thorp · 1 episode
2011–2012
TV
NYC 22
Blume · 1 episode
2012–
TV
Unforgettable
Lt. Greg Sartain · 1 episode
2011–
TV
White Collar
Bertie Slavkin · 1 episode
2009–
TV
Photos
Frequently Asked Questions
How old is Casey Siemaszko and where are they from?
Casey Siemaszko is 65 years old, born on March 17, 1961 in Chicago, Illinois, USA.
What are the most famous roles of Casey Siemaszko?
Casey Siemaszko is best known for roles in Back to the Future, Back to the Future Part II, Stand by Me.
How many movies has Casey Siemaszko been in?
Over a 43-year career (since 1983), Casey Siemaszko has appeared in 28 movies and 20 TV shows.
What was Casey Siemaszko's first movie?
The career of Casey Siemaszko began with Class (1983).
What is Casey Siemaszko's most recent movie or series?
Casey Siemaszko's most recent release is Billions, which premiered on January 17, 2016.
What TV shows has Casey Siemaszko appeared in?
On television, Casey Siemaszko has appeared in Law & Order: Special Victims Unit, The Blacklist, Person of Interest, Elementary.
Casey Siemaszko
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.