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 Michael O'Keefe Fletcher Stone Guest Star Erica Gimpel Elizabeth Stone Guest Star Mimi Kennedy Greta Guest Star Bruce French Peter Foster Guest Star Pat Caldwell Mary Jean Guest Star Derek Anthony Guard Guest Star Michael Len 9 Year Old Boy Guest Star Amy Margolis Mother Guest Star Paul Attanasio Executive Producer Katie Jacobs Executive Producer David Shore Executive Producer Bryan Singer Executive Producer Jace Alexander Director Doris Egan Writer