Guest Stars Camilla Luddington as Dr. Jo Wilson Jerrika Hinton as Dr. Stephanie Edwards Gaius Charles as Dr. Shane Ross Tina Majorino as Dr. Heather Brooks Roma Maffia as Roberta Thompson Joe Nieves as Michael Baker Miguel Sandoval as Hank Jessy Hodges as Donna Ivar Brogger as Graham Cunningham Co Starring Payton Silver as Dr. A. Knox Linda Eve Miller as Nurse Teresa Huang as Nurse Ruth Kate Mines as Nurse Gloria Gordon James as Nurse Gregory Ethan Dizon as Sean Adam Kolkin as Ethan John Deignan as Vincent Freeman Francesca Ferrara as Anne