Stan's (the paramedic that dies in the ambulance) last name is Giamati. However, when he and Ray are unloading a patient just before the ambulance crash, his name tag says "S. Hayden".
Stan blinks after he dies in the ambulance.
At the beginning of the episode, a paramedic named S. Hayden (played by Theo Rossi) is involved in an accident outside the ER entrance. When the camera focuses back on him upside down in the ambulance, his name tag now shows S. Gamatti.