Maggie Stiff was born on the Bronx, New York City, New York on June 21, 1974. She appeared on the 2009 film Push as Teresa Stowe and in Leaves of Grass as Rabbi Zimmerman. She also portrayed Lisa Sullivan in the 2016 film The 5th Wave.
She has been active in television since 1998 starting with an uncredited role in Sunset Beach. In 2007, she appeared in Nip/Tuck as Rachel Ben Natan and on Life on Mars as Maria Belanger in 2009.
One of her most notable roles was as Dr. Tara Knowles Teller in Sons of Anarchy and as Rachel in Mad Men. Her most recent TV appearance was in Billions as Wendy Rhoades. She is set to appear in The Short History of the Long Road as Cheryl.