Adam Arkin Dr. Aaron Shutt Actor Héctor Elizondo Dr. Phillip Watters Actor Thomas Gibson Actor Christine Lahti Dr. Kathryn Austin Actor Rocky Carroll Dr. Keith Wilkes Actor Mark Harmon Dr. Jack McNeil Actor Sam Sorbo Actor John DiMaggio Guest Star Terrence Beasor Guest Star Morlan Higgins Guest Star Tobin Bell Guest Star Harry Shearer Guest Star Maxine Stuart Guest Star Juli Donald Guest Star Sharon Omi Guest Star Mark Benninghofen Guest Star John Tinker Executive Producer Michael Dinner Executive Producer James Frawley Director Tim Kring Writer