California Code, Business and Professions Code - BPC § 3750.5

(a) Obtained, possessed, used, or administered to himself or herself in violation of law, or furnished or administered to another, any controlled substances as defined in Division 10 (commencing with Section 11000) of the Health and Safety Code, or any dangerous drug as defined in Article 2 (commencing with Section 4015) of Chapter 9, except as directed by a licensed physician and surgeon, dentist, podiatrist, or other authorized health care provider, or illegally possessed any associated paraphernalia.

(b) Used any controlled substance as defined in Division 10 (commencing with Section 11000) of the Health and Safety Code, or any dangerous drug as defined in Article 2 (commencing with Section 4015) of Chapter 9 of this code, or alcoholic beverages, to an extent or in a manner dangerous or injurious to himself or herself, or to others, or that impaired his or her ability to conduct with safety the practice authorized by his or her license.

(c) Applied for employment or worked in any health care profession or environment while under the influence of alcohol.

(d) Been convicted of a criminal offense involving the consumption or self-administration of any of the substances described in subdivisions (a) and (b), or the possession of, or falsification of a record pertaining to, the substances described in subdivision (a), in which event the record of the conviction is conclusive evidence thereof.

(e) Been committed or confined by a court of competent jurisdiction for intemperate use of or addiction to the use of any of the substances described in subdivisions (a), (b), and (c), in which event the court order of commitment or confinement is prima facie evidence of that commitment or confinement.

(f) Falsified, or made grossly incorrect, grossly inconsistent, or unintelligible entries in any hospital, patient, or other record pertaining to the substances described in subdivision (a).