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 Ricky Schroder Nurse Paul Guest Star Robert Maschio Todd Guest Star Sam Lloyd Ted Guest Star Amy Smart Jamie Moyer Guest Star Christa Miller Jordan Sullivan Guest Star Aloma Wright Nurse Laverne Roberts Guest Star Julie Hudson Dr. Gerson Guest Star Charles Rahi Chun Dr. Wen Guest Star Donald Sage Mackay Doctor 1 Guest Star Johnny Kastl Doug Guest Star Lindsey Stoddart Lauren Guest Star George Miserlis Crispin Guest Star Paul F. Perry Randall Guest Star Bill Lawrence Executive Producer, Writer Michael Alan Spiller Director Marc Buckland Director Lawrence Trilling Director Chris Koch Director Will Mackenzie Director Adam Bernstein Director Ken Whittingham Director Craig Zisk Director Eric Weinberg Writer Debra Fordham Writer Janae Bakken Writer Mark Stegemann Writer Gabrielle Allan Writer Angela Nissel Writer Tim Hobert Writer Matt Tarses Writer Mike Schwartz Writer Neil Goldman Writer