Michael Nathanson is an American actor. He’s been acting since the 2000s. During his early years, he appeared in the films Table One, Daymaker, and Shot List, as well as made his TV debut in Law & Order. In the 2010s, he appeared in the movies Young Adult, Generation Um…, Side Effects, The Happy Sad, and The Wolf of Wall Street. He also guest-starred in The Good Wife and Orange Is the New Black. His first notable role on television was as Dr. Levi Zinberg in The Knick. After this, he had one-time roles in Unforgettable and Chicago Med. He became further known for starring as Sam Stein in Marvel’s The Punisher.