Adam Arkin Dr. Aaron Shutt Actor Christine Lahti Dr. Kathryn Austin Actor Héctor Elizondo Dr. Phillip Watters Actor Thomas Gibson Actor Peter Berg Dr. Billy Kronk Actor Vondie Curtis-Hall Dr. Dennis Hancock Actor Jayne Brook Dr. Diane Grad Actor Mark Harmon Dr. Jack McNeil Actor Rocky Carroll Dr. Keith Wilkes Actor Tamara Tunie Guest Star Maggie Murphy Guest Star Lisa LaCroix Guest Star Zahn McClarnon Guest Star Alec Smight Guest Star John Paul Saurine Guest Star Christopher Ogden Guest Star Angela Shelton Guest Star Kim Lankford Guest Star Harry Danner Guest Star Ed Evanko Guest Star Amzie Strickland Guest Star Ronnie Graham Guest Star John Tinker Executive Producer Michael Dinner Executive Producer Lou Antonio Director Sara B. Charno Writer Nicole Yorkin Writer Dawn Prestwich Writer Josh Reims Writer