Guest Stars Jillian Murray as Dr. Heather Pinkney Tommy Dewey as Dr. Mike Leighton Christina Vidal as Dr. Gina Perello Steven Culp as Dr. Desmond Leighton Jeff Hephner as Dr. Edward Harbert Jesse Bradford as Gordon Heshman Will Rothhaar as Henry Rebecca Field as Lori Nicholson Hal Ozsan as Karo Petrosian Deniz Akdeniz as Manny Petrosian Michael Goorjian as Emanuel Petrosian Ezekiel Bridges as Graham Co Starring Angela Relucio as Nurse Risa Park Terrence Edwards as Medic #1 Joe Piccuirro as Medic #2 Iris Almario as Detective Carmody Taylor Zakhar Perez as Ari Stricks Melia Renee as Holly