California Code, Health and Safety Code - HSC § 1797.59

“Base hospital physician” or “BHP” means a physician and surgeon who is currently licensed in California, who is assigned to the emergency department of a base hospital, and who has been trained to issue advice and instructions to prehospital emergency medical care personnel consistent with statewide guidelines established by the authority. Nothing in this section shall be deemed to abridge or restrict the duties or functions of a physician and surgeon as otherwise provided by law.