Guest Stars Camilla Luddington as Dr. Jo Wilson Jerrika Hinton as Dr. Stephanie Edwards Gaius Charles as Dr. Shane Ross Nicole Rubio as Paramedic Nicole Cummins Tina Majorino as Dr. Heather Brooks Justin Bruening as Matthew Taylor Constance Zimmer as Dr. Alana Cahill John Duerler as Grant Rachel Brosnahan as Brian Nazanin Boniadi as Amrita Matt Pascua as Jess Rob Brownstein as Larry Stephanie Maura Sanchez as Admitting Nurse Jeremy Cohenour as Dr. Boyd Brett Rickaby as Mr. Weston Renee Pezzotta as E.R. Nurse Gerald Downey as Dr. Kenton Giles Brandon Ford Green as Dr. Allen Paull Walia as Dr. Kan Mattoo Yvette Saunders as Dr. Collier Maggie Gwin as Olivia Noel