Jill Hennessy Dr. Jordan Cavanaugh Actor Miguel Ferrer Dr. Garret Macy Actor Ken Howard Actor Mahershala Ali Actor Ravi Kapoor Dr. Mahesh "Bug" Mahershalalhashbaz Ali Actor Jerry O'Connell Det. Woody Hoyt Guest Star Steve Valentine Dr. Nigel Townsend Actor Shawn Christian Guest Star Brian Stokes Mitchell Guest Star Jack Klugman Guest Star Alex McKenna Guest Star D.W. Moffett Guest Star Lindsay Frost Guest Star Howard Hesseman Guest Star Tamlyn Tomita Guest Star Lois Nettleton Guest Star Rodney Scott Guest Star Alan Feinstein Guest Star Kathryn Hahn Lily Lebowski Guest Star Wallace Shawn Guest Star Tim Kring Executive Producer, Writer Allan Arkush Director