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 Peter Jacobson Dr. Chris Taub Actor Kal Penn Dr. Lawrence Kutner Actor Olivia Wilde Thirteen, Dr. Remy Hadley Actor Becky Baeling Deedee Guest Star Brad Grunberg Irv Guest Star David Lengel Video Director Guest Star Christopher Stapleton John Hadley Guest Star Nicole Cannon Nurse Helen Guest Star Lori Petty Janice Burke Guest Star Julia Putnam 9-Year-Old Thirteen Guest Star Danielle Petty Anne Hadley Guest Star Samantha Shelton Emmy Guest Star Paul Attanasio Executive Producer Katie Jacobs Executive Producer David Shore Executive Producer Bryan Singer Executive Producer Deran Sarafian Director Russel Friend Writer Garrett Lerner Writer