As used in this part, “health care provider” includes, but is not limited to, the following:
(a) Persons described in Section 4621.
(b) Emergency response employees, including, but not limited to, firefighters, law enforcement officers, emergency medical technicians I and II, paramedics, and employees and volunteer members of legally organized and recognized volunteer organizations, who are trained in accordance with standards adopted as regulations by the Emergency Medical Services Authority pursuant to Sections 1797.170, 1797.171, 1797.172, 1797.182, and 1797.183 of the Health and Safety Code to respond to medical emergencies in the course of performing their volunteer or employee duties with the organization.