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 Andrew Miller Baby Jack Guest Star Christa Miller Jordan Guest Star Kit Pongetti Lady Guest Star Phoebe Dorin Mrs. Jensen Guest Star Robert Maschio Todd Guest Star Robert Clendenin Dr. Zeltzer Guest Star Tim DeKay Mr. Hill Guest Star Josh Elliott Josh Elliott Guest Star Terricka Hudson Nurse Guest Star Sydney Jay Ross Guest Star Hannah Storm Hannah Storm Guest Star Bill Lawrence Executive Producer Kevin Biegel Writer John Putch Director