Cal. BPC § 687

(a) A healing arts practitioner who is authorized to prescribe, furnish, order, or administer dangerous drugs shall not be subject to a civil or criminal action or disciplinary or other administrative proceeding solely on the basis that the practitioner prescribed, furnished, ordered, or administered brand name or generic mifepristone or any drug used for medication abortion for a use that is different from the use for which that drug has been approved for marketing by the United States Food and Drug Administration or that varies from an approved risk evaluation and mitigation strategy pursuant to Section 355-1 of Title 21 of the United States Code, except if the state deems it necessary to address an imminent health or safety concern regarding brand name or generic mifepristone.

(b) Pursuant to Sections 1 and 1.1 of Article I of the California Constitution and the Reproductive Privacy Act (Article 2.5 (commencing with Section 123460) of Chapter 2 of Part 2 of Division 106 of the Health and Safety Code), the authority of a healing arts practitioner to prescribe, furnish, order, or administer brand name or generic mifepristone or any drug used for medication abortion is the practice of medicine, and the laws of another state or federal actions that interfere with the ability of a practitioner to prescribe, furnish, order, or administer brand name or generic mifepristone or any drug used for medication abortion if that action is lawful under the laws of the state, are against the public policy of this state.