Guest Stars Kelly McCreary as Dr. Margaret "Maggie" Pierce Geena Davis as Dr. Nicole Herman Nick D'Agosto as Dr. Graham Madden Co Starring Payton Silver as Dr. A. Knox Nicole Rubio as Paramedic Nicole Cummins Teresa Huang as Nurse Ruth Kevin Clarke as Paramedic Kevin Clarke Luciana Faulhaber as Emily Jensen David Carpenter as Norris Straughn Jessica Gardner as Sarah Straughn Michael Antosy as Corey Jensen Chris Schuette as Orderly Barbara Brownell as Hattie Straughn Laura Morgan as OR Nurse