Donald Sage Mackay
Known For
TV
NCIS
Kerry Killmartin
2003
TV
Frasier
Eduardo
1993
TV
House
Neil
2004
TV
Modern Family
George
2009
TV
Blue Bloods
Lt. Mike Collier
2010
TV
JAG
Pilot
1995
TV
Elementary
Ben
2012
TV
The Good Wife
Mike Pedrano
2009
TV
Scrubs
Doctor
2001
TV
Scrubs
Dr. Page
2001
TV
The West Wing
Ellis
1999
TV
ER
Detective Lash
1994
TV
Mad Men
Dr. Gosman
2007
TV
Malcolm in the Middle
Man
2000
TV
The Practice
Howard McGowan
1997
TV
Weeds
TSA Agent Warren
2005
TV
Tom Clancy's Jack Ryan
CJCS Jeff Maguire
2018
Film
Nuremberg
Senator William Fulbright
2025
TV
According to Jim
Greg
2001
TV
Masters of Sex
Prosecutor John Watson
2013
Filmography
2026FilmAnimal Friendsas John Fitzgerald2025FilmNurembergas Senator William Fulbright2025FilmMystery Island: House Rulesas De. Stanley Wellington2025TVGoing Dutchas General Gus King2024TVEricas Jerry2024TVThe Regimeas Richard Kaiser2023FilmThe Great Escaperas Nathan2023TVThe Following Events are Based on a Pack of Liesas Norm Niedecker2023FilmRed, White & Royal Blueas Jeffrey Richards2022TVWreckas Henry Allan2022TVCell 8as Pedersen2020TVAlex Rideras General Lomis2019TVTreadstoneas Greg Sanders2018TVTom Clancy's Jack Ryanas CJCS Jeff Maguire2013TVMasters of Sexas Prosecutor John Watson2013FilmThe Good Motheras Bob2012TVElementaryas Ben2010TVBlue Bloodsas Lt. Mike Collier2009TVModern Familyas George2009TVThe Good Wifeas Mike Pedrano2009TVThe Amazing Mrs. Novak2009FilmPlay the Gameas Retirement Home Director2007TVMad Menas Dr. Gosman2005TVWeedsas TSA Agent Warren2004TVHouseas Neil2003TVNCISas Kerry Killmartin2002TVWhat I Like About Youas Super2001TVAccording to Jimas Greg2001TVScrubsas Doctor2000TVThe Districtas Reporter #12000TVMalcolm in the Middleas Man1999TVThe West Wingas Ellis1999TVProvidenceas Officer Duncan1998FilmThe Swan Princess: The Mystery of the Enchanted Kingdomas Jean-Bob (voice)1997TVThe Practiceas Howard McGowan1996TV7th Heavenas Host1995TVJAGas Pilot1994TVERas Detective Lash1993TVFrasieras Eduardo—FilmA Colt Is My Passportas Wilson