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 Azura Skye as Irene Caroline Lagerfelt as Connie Tom Wright as Dr. Pilcher Jose Miguel Vasquez as Gang Banger Vince Deadrick, Sr. as Mr. Franklin Scott Alan Smith as Dr. Brady Co Starring Bobbin Bergstrom as Nurse #2 Jerry Hauck as Martin Kenneth White as Old Man