Sec. 1. As used in this chapter, "emergency medical responder" means:
(1) an emergency medical technician;
(2) an emergency medical technician-paramedic;
(3) a paramedic; and
(4) any other emergency services provider, physician, or nurse;
on the scene of a motor vehicle accident or emergency situation involving a program participant or accompanying or attending to a program participant patient in an ambulance.