Special Guest Stars Steven Weber as Dr. Dean Archer Guest Stars Brennan Brown as Dr. Samuel Abrams Asjha Cooper as Vanessa Taylor Devin Kawaoka as Kai Tanaka-Reed Conor Perkins as Dr. Zach Hudgins Lilah Richcreek as Nellie Cuevas John Henry Ward as David Sullivan Karin Anglin as Patty Sullivan Madison Dirks as Eric Sullivan Raquel Dominguez as Liza Martin Shariba Rivers as Rehab Nurse Simone Brades Anna George as Indrani Arya Co Starring Lorena Diaz as Nurse Doris Courtney Rioux as Paramedic Courtney Marie Tredway as Nurse Trinidad "Trini" Campos Lynnette Li as Nurse Nancy Amy J. Carle as Dr. Olga Patchefsky Adia Alli as Paramedic Adia T. Pharaoh Muhammad as John Bridges Zhaleh Vossough as Katherine