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 John Cho Harvey Park Guest Star Christina Cox Annette Raines Guest Star June Squibb Ramona Guest Star Peter Graves Myron Guest Star Keone Young Clyde Park Guest Star Elizabeth Sung Marilyn Park Guest Star Matt Malloy Aubrey Shifren Guest Star Kristoffer Ryan Winters New Guy Guest Star Stephanie Venditto Nurse Brenda Previn Guest Star Marco Pelaez Hospital Pharmacist Guest Star Tom Knickerbocker Dr. May Guest Star Paul Attanasio Executive Producer Katie Jacobs Executive Producer David Shore Executive Producer Bryan Singer Executive Producer Bryan Spicer Director Sara B. Cooper Writer