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 Travis Schuldt Keith Guest Star Christa Miller Jordan Guest Star Keri Russell Melody Guest Star Johnny Kastl Doug Guest Star Robert Maschio Todd Guest Star Frank Cameron Dr. Mickhead Guest Star Chris Dougherty Jamie Guest Star Cantrell Harris Policeman Guest Star Bruce Kirby Mr. Bilbray Guest Star Marjorie Lovett Mrs. Sheldon Guest Star Randall Keenan Winston Leonard Guest Star Manley Henry Snoop Dogg Resident Guest Star Bill Lawrence Executive Producer John Inwood Director Janae Bakken Writer