Cal. Veh. Code § 165.5
No act or omission of any rescue team operating in conjunction with an authorized emergency vehicle as defined in Section 165, while attempting to resuscitate any person who is in immediate danger of loss of life, shall impose any liability upon the rescue team or the owners or operators of any authorized emergency vehicle, if good faith is exercised.
For the purposes of this section, "rescue team" means a special group of physicians and surgeons, nurses, volunteers, or employees of the owners or operators of the authorized emergency vehicle who have been trained in cardiopulmonary resuscitation and have been designated by the owners or operators of the emergency vehicle to attempt to resuscitate persons who are in immediate danger of loss of life in cases of emergency.
This section shall not relieve the owners or operators of any other duty imposed upon them by law for the designation and training of members of a rescue team or for any provisions regarding maintenance of equipment to be used by the rescue team.
Members of a rescue team shall receive the training in a program approved by, or conforming to, standards prescribed by an emergency medical care committee established pursuant to Article 3 (commencing with Section 1797.270) of Chapter 4 of Division 2.5 of the Health and Safety Code, or a voluntary area health planning agency established pursuant to Section 127155 of the Health and Safety Code.
Ca. Veh. Code § 165.5