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 Clay Aiken Kenny Guest Star Ken Lerner Mr. James Guest Star Deonte Gordon Figsack Guest Star Christa Miller Jordan Guest Star Chrystee Pharris Kylie Guest Star Jeremy Howard Fat Frank Guest Star Lloyd Lineen Hank the Dishwasher Guest Star Bill Lawrence Executive Producer Adam Bernstein Director Debra Fordham Writer