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 Tina Majorino as Dr. Heather Brooks Justin Bruening as Matthew Taylor Kyle Silverstein as Ethan Dawson Michael Buie as Paul Dawson Charles Michael Davis as Dr. Jason Myers Enid Graham as Rachel Dawson Misha Gonz-Cirkl as Social Worker Sarah Chalke as Casey Hedges Kate Rene Gleason as Elyse Cruse Patrick Cavanaugh as Vince Cruse Mark Chadwick as Cam Miller Co Starring Nicole Rubio as Paramedic Nicole Cummins Denice J. Sealy as Nurse Grace Rowe as Paramedic Grace Arlene Santana as Nurse Kevin Clarke as Paramedic Kevin Clarke John Cappon as John the Paramedic David Haley as Paramedic #2 Hunter Reid as Parker Hedges Kaine Reid as Parker Hedges Raedin Reid as Parker Hedges Kelly Sry as Tech Alex Salem as Paramedic #3 Ken Michelman as Dr. Goyle Jay Walker as Bike Messenger