Guest Stars Peter Mooney as Dr. Jeremy Bishop Gregory Calderone as Dr. Billy Scott Jason Blicker as Randy Rogan Matt Gordon as Liam Quinn Gwenlyn Cumyn as Nadine Co Starring Emily Pope as Nurse Katrina Trish Fagan as Dr. O'Toole Lisa Codrington as Nurse Rosa Humberly González as Bridesmaid Matthew Olver as Ron Ryan Kelly as Preston Lassiter Aris Athanasopoulos as Foster Reed Leslie Seiler as Elyse Quinn