Guest Stars Camilla Luddington as Dr. Jo Wilson Jerrika Hinton as Dr. Stephanie Edwards Gaius Charles as Dr. Shane Ross Tessa Ferrer as Dr. Leah Murphy Constance Zimmer as Dr. Alana Cahill Dominic Hoffman as Dr. Jeff Russell Andy Milder as Dr. Darryl Nessbaum Lexi DiBenedetto as Simmi Johnson Cullen Douglas as Dr. Bob Richardson Co Starring Nicole Rubio as Paramedic Nicole Cummins Arlene Santana as Nurse Ursula Burton as E.R. Nurse Vivian Kerr as Logger's Wife David Goryl as Ron Campion Kovar McClure as Dr. Tim Redmond Helen Eigenberg as Lillian Campion Michael-James Olsen as Brock Molly Schreiber as Flight Nurse