Zach Braff Dr. John "J.D." Dorian Actor Sarah Chalke Dr. Elliott Reid Actor Donald Faison Dr. Chris Turk Actor John C. McGinley Dr. Perry Cox Actor Judy Reyes Nurse Carla Espinosa Actor Ken Jenkins Dr. Bob Kelso Actor Neil Flynn The Janitor Actor Nestor Carbonell Dr. Ramirez Guest Star Alexander Chaplin Mr. Thompson Guest Star Aloma Wright Nurse Roberts Guest Star Cathleen Gallagher Woman Guest Star Joe Rose Troy Guest Star Paul Tigue Waiter Guest Star Bill Lawrence Executive Producer Gail Mancuso Director Rich Eustis Writer