He directed Herb Gardner's Tony winning I'm Not Rappaport at Seattle Rep before staging it off-Broadway, on Broadway, in London's West End, and the United States national tour.
The duo later collaborated on The Sisters Rosensweig on Broadway and the National Tour, An American Daughter, and Ms. Wasserstein's final play, Third.
Other Broadway credits include Retreat From Moscow, Morning's at Seven, Proof, Major Barbara, A Moon for the Misbegotten, Accent on Youth, The Homecoming, Rabbit Hole, Prelude to a Kiss, After The Night And The Music, Julius Caesar, and Ah, Wilderness.
[8] Other Off-Broadway credits include Stuff Happens, Intimate Apparel, Ancestral Voices, Spinning Into Butter, Far East, London Suite, Psychopathia Sexualis, The American Clock, and Good People.
Sullivan's Broadway acting credits include the 1973 revival of A Streetcar Named Desire, The Merchant of Venice (1973), The Playboy of the Western World (1971),[6] The Good Woman of Setzuan, and Camino Real.