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 Christa Miller Jordan Sullivan Guest Star Granger Green Meredith Guest Star Aloma Wright Nurse Roberts Guest Star Paul Connor Patient Guest Star Cathy Herd Mrs. Wheeler Guest Star Joel Hurt Jones Mr. Wheeler Guest Star Derek Miller Orderly Guest Star Ted Pitsis Al Guest Star Steve Tom Narrator , Doctor Guest Star Monica Allgeier Nurse Tisdale Guest Star Nicholas Glitzer Patient's Brother Guest Star Tracy Littlejohn Nurse 2 Guest Star Lynn Meneses Nurse 1 Guest Star Bill Lawrence Executive Producer Jeff Melman Director Debra Fordham Writer