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Celebrity Profile Since 1969

Mary McCormack

Mary McCormack is known for acting, with popular credits including K-PAX, 1408, High Heels and Low Lifes, The Big Tease.

Born 08 Feb 1969 Plainfield, New Jersey, USA

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Biography

Mary McCormack Story

Mary Catherine McCormack is an American actress. She has had leading roles as Justine Appleton on the series Murder One (1995–1997), as Deputy National Security Adviser Kate Harper on The West Wing (2004–2006), as Deputy U.S. Marshal Mary Shannon on In Plain Sight (2008–2012), and as Peggy on the comedy series The Kids Are Alright (2018–2019).

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22 Jun 2026

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Known for K-PAX, 1408, High Heels and Low Lifes, The Big Tease.

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Filmography

Mary McCormack Career Timeline

79 recent credits shown

2025 Vicious as Mother movie 2025 The Pitt as Dr. Linda Conley tv 2023 National Memorial Day Concert as Self movie 2021 Heels as Willie Day tv 2020 Unpregnant as Debra Clarke movie 2019 The L Word: Generation Q as Anne Finley tv 2019 Still Laugh-In: The Stars Celebrate as Self movie 2019 Treehouse as Lilith movie 2018 The Kids Are Alright as Peggy Cleary tv 2018 25 Words or Less as Self tv 2018 25 Words or Less tv 2018 25 Words or Less as Mary McCormack tv 2018 For the People as Chloe Daniels tv 2017 Will & Grace as Janet tv 2017 Drone as Ellen movie 2017 Loaded as Casey tv 2017 Alien Code as Rebecca movie 2017 The Crash as Sarah Schwab movie 2016 An American Girl Story: Maryellen 1955 - Extraordinary Christmas as Kay Larkin movie 2016 Divorce as Kathy DeSantis tv 2016 Match Game as Self - Panelist tv 2016 To Tell the Truth as Self - Panelist tv 2016 Chelsea as Self tv 2016 A Country Called Home as Amanda movie 2016 Chelsea Does as Herself tv 2016 Angie Tribeca as Abigail Liukin tv 2014 Scooby-Doo! WrestleMania Mystery as Ms. Richards (voice) movie 2013 Welcome to the Family as Caroline Yoder tv 2013 Escape from Polygamy as Leann movie 2012 The Newsroom as Molly Levy tv 2012 Should've Been Romeo as Ellen movie 2012 Scandal as Lisa Elliot tv 2012 House of Lies as Denna Altshuler tv 2012 The Unprofessional as Hilary Pfeiffer-Dunne movie 2009 Watch What Happens Live with Andy Cohen as Self - Guest tv 2009 Late Night with Jimmy Fallon as Self tv 2008 In Plain Sight as Mary Shannon tv 2007 1408 as Lilly Enslin movie 2006 For Your Consideration as Pilgrim Woman movie 2006 Right at Your Door as Lexi movie 2005 Madison as Bonnie McCormick movie 2005 The Late Late Show with Craig Ferguson as Self tv 2004 Traffic as Carole McKay tv 2003 K Street as Maggie Morris tv 2003 The Ellen DeGeneres Show as Self tv 2003 Dickie Roberts: Former Child Star as Grace Finney movie 2003 Jimmy Kimmel Live! as Self tv 2002 Full Frontal as Linda movie 2002 World Traveler as Margaret movie 2001 K-PAX as Rachel Powell movie 2001 Law & Order: Criminal Intent as Mary Shannon tv 2001 High Heels and Low Lifes as Frances movie 2001 BigLove as Phoebe movie 2000 East of A as Daphne movie 2000 Gun Shy as Gloria Nesstra movie 2000 The Broken Hearts Club: A Romantic Comedy as Anne movie 2000 Other Voices as Anna movie 1999 The Big Tease as Monique movie 1999 Mystery, Alaska as Donna Biebe movie 1999 The West Wing as Kate Harper tv 1999 The Late Late Show with Craig Kilborn as Self - Guest tv 1999 True Crime as Michelle Ziegler movie 1999 Harvest as Agent Becka Anslinger movie 1999 Getting to Know You as Leila Lee movie 1998 The Alarmist as Sally movie 1998 54 as New Year's Eve Wife (uncredited) movie 1998 Deep Impact as Andrea Baker movie 1997 Murder One: Diary of a Serial Killer as Justine Appleton movie 1997 Fathers' Day as Virginia Farrell (uncredited) movie 1997 Private Parts as Alison Stern movie 1997 Colin Fitz as Moira movie 1995 Murder One as Justine Appleton tv 1995 The Wright Verdicts as Beth Eckhart tv 1995 Backfire! as Sarah movie 1994 Miracle on 34th Street as Myrna Foy movie 1994 ER as Debbie tv 1992 The Tonight Show with Jay Leno tv 1990 Law & Order as Rickie the Bartender tv 1956 Tony Awards as Self - Nominee tv

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Questions About Mary McCormack

Who is Mary McCormack?

Mary McCormack is known for acting, with popular credits including K-PAX, 1408, High Heels and Low Lifes, The Big Tease.

How old is Mary McCormack?

Mary McCormack is 57 years old, based on the birthday listed by TMDB.

What is Mary McCormack famous for?

Mary McCormack is known for credits including K-PAX, 1408, High Heels and Low Lifes, The Big Tease, The Broken Hearts Club: A Romantic Comedy.

Where can I read the latest news about Mary McCormack?

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