Alfred Molina
as Dr. Harding Hooten
Jamie Bamber
as Dr. Tyler Wilson
Jennifer Finnigan
as Dr. Tina Ridgeway
Keong Sim
as Dr. Sung Park
Sarayu Blue
as Dr. Sydney Napur
Ving Rhames
as Dr. Jorge "El Gato" Villanueva
Emily Swallow
as Dr. Michelle Robidaux
Bill Irwin
as Dr. Buck Tierney