Hugh Laurie Dr. Gregory House Actor Lisa Edelstein Dr. Lisa Cuddy Actor Omar Epps Dr. Eric Foreman Actor Robert Sean Leonard Dr. James Wilson Actor Jennifer Morrison Dr. Allison Cameron Actor Jesse Spencer Dr. Robert Chase Actor Sela Ward Stacy Warner Guest Star Currie Graham Mark Warner Guest Star Matthew John Armstrong Kalvin Guest Star Wings Hauser Michael Guest Star Hamilton Mitchell Infection Control Officer Guest Star Paul Attanasio Executive Producer Katie Jacobs Executive Producer David Shore Executive Producer Bryan Singer Executive Producer Gloria Muzio Director Liz Friedman Writer