Zarish has appeared on and Off-Broadway, starring in Other’s People Money at the Minetta Lane Theater and Miss Julie at the Roundabout Theatre. She appeared in soap operas as Natalie Bannon on As the World Turns in the early 1980s, and as Lee Halpern on One Life to Live from 1986 to 1988, and again from 2008 to 2009. She has also guest starred on Law & Order, Forever, New York Undercover, Seinfeld, Mad About You, and Blue Bloods. Her Seinfeld episode, "The Alternate Side," was selected as one of Seinfeld’s top ten episodes by Rolling Stone. In film, she played supporting roles in Mystic Pizza and The Next Big Thing.