Guest Stars Jillian Murray as Dr. Heather Pinkney Tommy Dewey as Dr. Mike Leighton Christina Vidal as Dr. Gina Perello Jesse Bradford as Gordon Heshman Courtney Ford as Danielle Randall Kenneth Mitchell as Cory Rockman Tim Guinee as Adam Benton Mary Mouser as Tia Benton Zuleyka Silver as Kamilla Michael B. Silver as Dr. Paul Weatherly Graham Hamilton as Henry Randall Nikhil Pai as JJ Coyle Co Starring Angela Relucio as Nurse Risa Park Ellia English as Isabel Mendez Joshua Keller Katz as Medic #3 Becky Wu as Fannie Lee Virginia Tucker as Elena Turner Aris Mendoza as Medic #2 Jim Titus as Medic #1 Sadie Stratton as Kelly Rockman Jesse Wang as Sang Han