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Maggie Siff (born June 21, 1974) is an American actress. Her most notable television roles have included department store heiress Rachel Menken Katz on the AMC drama Mad Men, Dr. Tara Knowles on the FX drama Sons of Anarchy for which she was twice nominated for the Critics' Choice Television Award for Best Supporting Actress in a Drama Series, and psychiatrist Wendy Rhoades on the Showtime series Billions.
She has also had roles in the films Push (2009) as Teresa Stowe, and Leaves of Grass (2010) as Rabbi Renannah Zimmerman. She starred in the independent film A Woman, a Part (2016) and had a minor role in the drama film One Percent More Humid (2017). She is the television spokesperson for the robo-advisor service Betterment.
Siff worked extensively in regional theater before acting in television. She won a Barrymore Award for Excellence in Theater in 1998 for her work in Henrik Ibsen's Ghosts at Lantern Theater Company.
Born to a father of Ashkenazi Jewish descent who was also a stage actor, Siff has stated that she feels “culturally Jewish because of how and where I grew up."
She played Rachel Menken Katz on the series Mad Men from 2007 to 2008, which earned her a nomination, along with the rest of the cast, for a Screen Actors Guild Award for Outstanding Performance by an Ensemble in a Drama Series. She also appeared in a small role as a burn victim on Nip/Tuck during that time, before being cast as Tara Knowles on Sons of Anarchy in 2008.
She has appeared in such films as Then She Found Me (2007) as Lily, Push as a Psychic surgery (called a Stitch) named Teresa Stowe, sent to help Nick (played by Chris Evans), Funny People (2009) as Rachel, Leaves of Grass (2010) as Rabbi Renannah Zimmerman, and Concussion (2013) as Sam Bennet. She appears in the 2016 Showtime series Billions. She starred in an independent indie film called A Woman, A Part (2016) as well as One Percent More Humid (2017).
In 2017, she narrated the audio book Gwendy's Button Box by Stephen King and Richard Chizmar and the sequel Gwendy's Magic Feather by Chizmar.
Starting in 2018, she has been serving as the television spokesperson for Betterment, an online investment service.
In 2020, Siff provided the voice for the titular subject of "Polly Platt: The Invisible Woman", over the course of a season of Karina Longworth’s film history podcast You Must Remember This.
Career
Siff started appearing in television series in 2004. She appeared as an Alcoholics Anonymous speaker during an episode of Rescue Me in Season 2. She also had roles on , Grey's Anatomy, and Law & Order.
Personal life
In October 2013, Siff announced that she was expecting her first child with husband, Paul Ratliff, whom she married in 2012. Siff gave birth to a daughter, Lucy. Siff's husband died in 2021 of brain cancer.
Filmography
Film
2007 Michael Clayton Attorney #1 2007 Then She Found Me Lily 2009 Push Teresa Stowe 2009 Leaves of Grass Rabbi Renannah Zimmerman 2009 Funny People Rachel 2013 Concussion Sam Bennet 2016 The 5th Wave Lisa Sullivan 2016 A Woman, a Part Anna Baskin Also executive producer 2016 The Sweet Life Ava 2017 One Percent More Humid Lisette 2019 The Short History of the Long Road Cheryl
Television
2004 Third Watch Cindy Episode: "Obsession" 2005 Rescue Me Young Woman at AA Episode: "Twat" 2006 Emily McCooper Episode: "Gone" 2006 3 lbs. Lisa Kutchem Episode: "The God Spot" 2007 Grey's Anatomy Ruthie Sales Episode: "The Heart of the Matter" Mad Men Rachel Menken Katz Main role (season 1), guest role (seasons 2 and 7) Nip/Tuck Rachel Ben Natan 3 episodes 2008 Law & Order Attorney Mahaffey Episode: "Executioner" Sons of Anarchy Tara Knowles Main role (seasons 1–6) 2009 Life on Mars Maria Belanger 3 episodes 2011 A Gifted Man Lily Episode: "In Case of Letting Go" 2016–2023 Billions Wendy Rhoades Main role 2019 Explained Narrator Episode: "Billionaires" 2025 Law & Order Kate Norris Episode: "Crossing Lines"
External links
Categories: 20th-century American Actresses, 21st-century American Actresses, Actresses From The Bronx, American Film Actresses, American Television Actresses, The Bronx High School Of Science Alumni, Bryn Mawr College Alumni, Jewish American Actresses, Living People, Tisch School Of The Arts Alumni, American Ashkenazi Jews, 1974 Births
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