Zach Braff Dr. John "J.D." Dorian Actor Donald Faison Dr. Chris Turk Actor John C. McGinley Dr. Perry Cox Actor Eliza Coupe Dr. Denise Mahoney Actor Kerry Bishé Lucy Bennett Actor Michael Mosley Drew Suffin Actor Dave Franco Cole Aaronson Actor Sarah Chalke Dr. Elliott Reid Guest Star Ken Jenkins Dr. Bob Kelso Guest Star Neil Flynn The Janitor Guest Star Robert Maschio Todd Guest Star Nicky Whelan Maya Guest Star Walter Addison Ben Guest Star Holly Kaplan Patient Guest Star David Kobzantsev Michael Guest Star John Billingsley Alan Guest Star Gregoer Boru Sad Eyes Guest Star K.J. Phelps Donnie Guest Star Antonio Sabato Jr. Himself Guest Star Jim Tasker Announcer Guest Star Bill Lawrence Executive Producer, Writer Michael Alan Spiller Director Dave Perkal Cinematographer