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 Mary Kate Schellhardt as Female Fellow Charlie Hofheimer as Mark Allmore Douglas Spain as Latino Fellow Caitlin Dahl as Twin Brian Klugman as Stark Reynaldo Rosales as Handsome Fellow Melinda Dahl as Twin Co Starring Bobbin Bergstrom as Nurse #2 Uncredited James A Marshall as Delivery Man
