Mandy Patinkin Dr. Jeffrey Geiger Actor Adam Arkin Dr. Aaron Shutt Actor Christine Lahti Dr. Kathryn Austin Actor Thomas Gibson Actor Vondie Curtis-Hall Dr. Dennis Hancock Actor Roxanne Hart Actor Peter MacNicol Actor Peter Berg Dr. Billy Kronk Actor Jayne Brook Dr. Diane Grad Actor Héctor Elizondo Dr. Phillip Watters Actor Michael Cutt Guest Star Robyn Lively Guest Star Kimiko Gelman Guest Star Lynne Moody Guest Star T.J. Evans Guest Star Linda Klein Guest Star Giovanni Ribisi Guest Star Carrie Snodgress Guest Star Maggie Murphy Guest Star Jack Laufer Guest Star Stephen Elliott Guest Star Alexa PenaVega Guest Star John Tinker Executive Producer Michael Dinner Executive Producer