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 Charles Rahi Chun Dr. Wen Guest Star Robert Maschio Todd Guest Star Aloma Wright Nurse Roberts Guest Star Michael Coleman Janitor 1 Guest Star Frank Cameron Dr. Mickhead Guest Star Zaid Farid Mr. Strauss Guest Star Lily Goff Gaby Guest Star Martin Klebba Randall Guest Star Donald Sage Mackay Doctor Guest Star Renee Ryan Mrs. Janitor Guest Star Brandon Waters Young Janitor Guest Star Bill Lawrence Executive Producer Henry Chan Director Justin Spitzer Writer