Jill Hennessy Dr. Jordan Cavanaugh Actor Miguel Ferrer Dr. Garret Macy Actor Ken Howard Actor Ravi Kapoor Dr. Mahesh "Bug" Mahershalalhashbaz Ali Actor Steve Valentine Dr. Nigel Townsend Actor Kathryn Hahn Lily Lebowski Actor Ivan Sergei Actor Jennifer Finnigan Actor Jerry O'Connell Det. Woody Hoyt Actor Sandra Bernhard Guest Star Gina Gershon Guest Star Reed Diamond Guest Star Wallace Shawn Guest Star Mathew St. Patrick Guest Star Susan Gibney Guest Star Molly Sims Guest Star Ted Shackelford Guest Star Eugene Byrd Guest Star Snoop Dogg Guest Star Tim DeZarn Guest Star Tim Kring Executive Producer