Zach Braff Dr. John "J.D." Dorian Actor, Director 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 Johnny Kastl Doug Guest Star Elizabeth Banks Dr. Kim Briggs Guest Star Sam Lloyd Ted Guest Star Travis Schuldt Keith Guest Star Robert Maschio Todd Guest Star Christa Miller Jordan Guest Star Aseem Batra Josephine Guest Star, Writer Aloma Wright Nurse Shirley Guest Star Kit Pongetti Lady Guest Star Geoff Stevenson Dr. Beardface Guest Star Andrew Miller Baby Jack Guest Star Tyler Poelle Boon Guest Star Kammy Burnett Nurse Guest Star Bill Lawrence Executive Producer, Director Will Mackenzie Director Adam Bernstein Director Linda Mendoza Director Michael McDonald Director Rick Blue Director Chris Koch Director Mark Stegemann Writer Andy Schwartz Writer Dave Tennant Writer Angela Nissel Writer Bill Callahan Writer Garrett Donovan Writer Clarence Livingston Writer Debra Fordham Writer Mike Schwartz Writer Neil Goldman Writer