Guest Stars K.K. Moggie as Dr. Gillian Jelani Patch Darragh as Tim Flanagan Margo Martindale as Nurse Klowden Kate Mulgrew as Jeannie Flanagan Peter Gerety as Jimmy Flanagan Kevin Corrigan as Gerard Danton Stone as Dr. Carlson Jason Ritter as Gabe Tyler Amy Hargreaves as Karen Eloise Mumford as Hannah Larsen Sonnie Brown as Dr. Lee Co Starring Victor Cruz as MRI Tech Kevin Breznahan as Bearded Vet Beau Van Donkelaar as Skinny Vet Johnny Pruitt as Bowling Alley Waiter Franklin Ojeda Smith as Wolf John Patrick Hayden as Brett Lambert