Kazimierz Andrew "Casey" Siemaszko (March 17, 1961) is an American actor best known for Back to the Future (1985), Young Guns (1988), and Stand by Me (1986).
His sister is Nina Siemaszko.
Filmography
Film Roles
- 1983: Class as Doug
- 1984: Hard Knox as Aaron Davis
- 1984: Silence Of The Heart as Jeff
- 1985: Secret Admirer as Roger Despard
- 1985: Back to the Future as 3-D
- 1989: Back to the Future Part II as 3-D
- 1986: Miracle Of The Heart A Boys Town Story as Andy Grainger
- 1986: Amazing Stories as Jonathan
- 1986: Stand by Me as Billy Tessio
- 1987: American Harvest as Dakota
- 1987: Gardens Of Stone as Wildman
- 1987: Three O'Clock High as Jerry Mitchell
- 1988: Biloxi Blues as Don Carney
- 1988: Young Guns as Charley Bowdre
- 1989: Breaking In as Mike Lafebb
- 1991: The Chase as Hutchinson
- 1991: The Big Slice as Mike Sawyer
- 1992: Near Mrs as Colin Phipps
- 1992: The Paint Job as Cal
- 1992: Of Mice and Men as Curley
- 1994: Teresas Tattoo as Michael
- 1994: Milk Money as Cash
- 1995: Napoleon as Conan (voice)
- 1995: Black Scorpion as Dr. Goddard
- 1996: The Phantom as Morgan
- 1996: Mistrial as Det. Bobby Zito
- 1997: Bliss as Tanner
- 1997: Rose Hill as Fergus Carroll
- 1998: Taxman as Abrasha Topolev
- 1998: Together And Alone as Billy
- 1999: Limbo as Bobby Gastineau
- 1999: Chameleon II Death Match as Jake Booker
- 2000: The Crew as Young Bobby Bartellemeo
- 2003: The Street Lawyer as Rafter Mayes
- 2006: Waltzing Anna as Dr. Jeffrey Webb
- 2007: The Boy Who Cried Bitch The Adolescent Years as Kenny
- 2009: Public Enemies as Harry Berman
- 2013: Killing Kennedy as Jack Ruby
Television Roles
- 1984: The Facts of Life as Brian
- 1984-1985: St. Elsewhere as Rick Messina (3 episodes)
- 1985: Amazing Stories as Jonathan
- 1993: Tribeca as Red Grady
- 1994: The Adventures of Brisco County, Jr. as Ned Zed
- 1994: Seven Hundred Four as Joey Stivic
- 1995-1996: New York Daze as Angry Competitive Guy (3 episodes)
- 1996-2004: NYPD Blue as IAB Captain Pat Fraker (14 episodes)
- 1997: Chicago Sons as Frank
- 1997-2009: Law & Order as Bart Rainey/Green's Union Delegate/Mr. Shuman (3 episodes)
- 1999: Storm of the Century as Alton 'Hatch' Hatcher
- 2000: Falcone as Ray Cerrone
- 2003: Oz as Det. Tarnowski
- 2004: Law & Order: Criminal Intent as Harvey Gruenwald
- 2005: The Inside as Billy Ray Pope
- 2006: CSI: NY as Paul Sabotini
- 2007: Law & Order: Special Victims Unit as EPA Official
- 2007: The Bronx Is Burning as Det. Welker
- 2007-2012: Damages as Det. Dan Williams (13 episodes)
- 2008: New Amsterdam as Peter Huygens
- 2010: The Event as Frank Decosta
- 2012: Blue Bloods as Josh Thorp
- 2012: Louie as Homeless Man
- 2012: White Collar as Bertie Slavkin
- 2012: NYC 22 as Duty Sgt. Allen Blume
- 2012: Elementary as Michael McGee
- 2014: Person of Interest as Lester Strickland
- 2014: The Blacklist as Sam Raimo
- 2015: Unforgettable as Lt. Greg Sartain
- 2016: Billions as Seids
Video Game Roles
- 2004: Red Dead Revolver as Conductor/Cornet Brother/Cowboy/Hank Pullman
- 2004: Grand Theft Auto: San Andreas as Johnny Sindacco/Pedestrian
- 2018: Red Dead Redemption II as Wrobel
Shorts
- 2004: Grand Theft Auto San Andreas The Introduction as Johnny Sindacco (uncredited)
Self
- 1993: My Lifes In Turnaround
