California Code, Business and Professions Code - BPC § 2135.5

(a) They hold an unlimited and unrestricted license as a physician and surgeon in another state and has held that license continuously for a minimum of four years prior to the date of application.

(b) They meet the postgraduate training requirements in Section 2096 and are certified by a specialty board that is a member board of the American Board of Medical Specialties.

(c) They are not subject to denial of licensure under Division 1.5 (commencing with Section 475) or Article 12 (commencing with Section 2220).

(d) They have not been the subject of a disciplinary action by a medical licensing authority or of an adverse judgment or settlement resulting from the practice of medicine that, as determined by the board, constitutes a pattern of negligence or incompetence.

(e) This section shall become operative on January 1, 2020.