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 Brendan Fraser Ben Sullivan Guest Star Christa Miller Jordan Sullivan Guest Star Robert Clendenin Dr. Zeltzer Guest Star Sam Lloyd Lawyer Guest Star Robert Maschio Todd Guest Star Aloma Wright Nurse Roberts Guest Star Katya Abelsky Child 2 Guest Star Charles Rahi Chun Dr. Wen Guest Star Johnny Kastl Doug Guest Star Lela Lee Bonnie Guest Star Brennan Louie Child 1 Guest Star Philip McNiven Roy Guest Star George Miserlis Crispin Guest Star Paul F. Perry Randall Guest Star Bill Lawrence Executive Producer Michael Alan Spiller Director Garrett Donovan Writer Neil Goldman Writer