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 Robert Maschio Todd Guest Star Nicky Whelan Maya Guest Star Matthew Moy Trang Guest Star Tracy McCubbin Nurse Sheila Guest Star Ken Jenkins Dr. Bob Kelso Guest Star Nadine Velazquez Nicole Guest Star Ginna Rutter 75-Year Old Lucy Guest Star Bill Lawrence Executive Producer Lon Zimmet Writer Dan Rubin Writer Michael Alan Spiller Director