Guest Stars Peter Jacobson as Dr. Christopher Taub Olivia Wilde as Dr. Remy "Thirteen" Hadley Kal Penn as Dr. Lawrence Kutner Anne Dudek as Dr. Amber Volakis Edi Gathegi as Cole Andy Comeau as Brennan Carmen Argenziano as Henry Dobson Meera Simhan as Jody Kathleen York as Dr. Schaffer Brian Klugman as Stark Melinda Dahl as Twin Charlie Hofheimer as Mark Allmore Mary Kate Schellhardt as Female Fellow Caitlin Dahl as Twin Reynaldo Rosales as Handsome Fellow Douglas Spain as Latino Fellow Co Starring Bobbin Bergstrom as Nurse #2 Uncredited James A Marshall as Delivery Man
