Guest Stars Robert Joy as Dr. Sid Hammerback Claire Forlani as Dr. Peyton Driscoll Fiona Gubelmann as Isabella Cooksey Chris Payne Gilbert as Dr. Henry Kroft Terrell Tilford as Dr. Quinn Brookman Quincy Dunn-Baker as J.J. Huntsville Ryan Doom as Christopher Bowfield Co Starring Ryan Johnson as Bob Smith Joseph Williamson as Derek Curson Neill Skylar as Jennie Parker Wade Mylius as Homeless Guy