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 Ron Silver Guest Star Mia Korf Guest Star April Grace Guest Star Stephen Caffrey Guest Star Shunil Bailey Guest Star Mitch Carter Guest Star Rosie Malek-Yonan Guest Star Brian Carpenter Guest Star Ramsay Midwood Guest Star Maggie Murphy Guest Star John Tinker Executive Producer, Writer Michael Dinner Executive Producer Bill D'Elia Director Sara B. Charno Writer Jennifer Levin Writer Thomas M. Heric Writer