Hugh Laurie Dr. Gregory House Actor Lisa Edelstein Dr. Lisa Cuddy Actor Robert Sean Leonard Dr. James Wilson Actor Jennifer Morrison Dr. Allison Cameron Actor Omar Epps Dr. Eric Foreman Actor Jesse Spencer Dr. Robert Chase Actor Mark Harelik Mr. Foster Guest Star Nicholas D'Agosto Keith Foster Guest Star Amanda Seyfried Pam Guest Star Marco Pelaez Hospital Pharmacist Guest Star America Olivo Ingrid Guest Star Maurice Godin Dr. Hourani Guest Star Akiko Morison Anesthesiologist Guest Star Paul Attanasio Executive Producer Katie Jacobs Executive Producer David Shore Executive Producer Bryan Singer Executive Producer Nelson McCormick Director Lawrence Kaplow Writer Thomas L. Moran Writer