MedicalBoard has an excellent comment on what is legal in California around Medical Spas and physicians acting as medical directors.

There is a huge amount of information on this site around this issue but this is an excellent comment and I'm reposting it here. 

Q & A: 

I've been approached by a nurse to be her "sponsoring physician" for her laser and Botox practice; would that be legal?

No. There is no such thing as a "sponsoring physician." Nurses may not, under California law, employ or contract with a physician for supervision. A nurse may not have a private practice with no actual supervision. While the laws governing nursing recognize "the existence of overlapping functions between physicians and registered nurses" and permit "additional sharing of functions within organized health care systems that provide for collaboration between physicians and registered nurses" (Business and Professions Code section 2725), nurses only may perform medical functions under "standardized procedures." The board does not believe this allows a nurse to have a private medical cosmetic practice without any physician supervision.

I've been asked by a layperson to serve as "medical director" for a "medi-spa" that provides laser and other cosmetic medical services; would that be legal?

No. No one who cannot legally practice medicine can offer or provide medical services (Business and Professions Code section 2052). A physician contracting with or acting as an employee of a lay-owned business would be aiding and abetting the unlicensed practice of medicine (Business and Professions Code section 2264, 2286, and 2400). To offer or provide these services, the business must be a physician-owned medical practice or professional medical corporation with a physician being the majority shareholder.

What is the penalty if I get caught using or helping an unlicensed person to perform medical treatment?

The law provides a number of sanctions, ranging from license discipline to criminal prosecution, for aiding and abetting the unlicensed practice of medicine. Physicians could be charged with aiding and abetting unlicensed practice, and the employee could be charged with unlicensed practice.

I understand that all of these practices may be illegal, but I see advertisements all the time for these kinds of illegal practices. What should I do?

You may file a complaint with the Medical Board. To do so, please send the advertisement, the publication name and date, and your address and telephone number where you may be reached for further information, to our Central Complaint Unit at 1426 Howe Avenue, Suite 54, Sacramento, CA 95825. The board will contact the business, inform them of the law, and direct them to cease any illegal practice. If it is simply the advertisement that is misleading, they will be directed to change or clarify the ad.

It is impossible to cover all of the relevant legal issues in a short article, and these questions and answers are not a substitute for professional legal advice. Physicians may want to consult with their attorneys or malpractice carriers about the use of their office personnel. In addition, the board has a number of written materials with more thorough information on this subject. There are legal opinions on the use of lasers and dermabrasion, materials outlining the legal limitations on use of medical assistants, as well as the actual statutes and regulations.

To request any of these documents, please contact the Medical Board of California, 1426 Howe Avenue, Suite 92, Sacramento, CA 95825, or call (916) 263-2389.