Can a non-physician own a med spa in Montana?

Short answer
The cited rules do not settle this — they define a professional service as one only licensees may render and require a professional corporation to deliver it through licensed people, but they set no flat bar on who may own the business.

Montana’s line on who may own a medical practice is drawn by the professional corporation act and one rule of the board of medical examiners. The Act defines a professional service as one that may lawfully be rendered only by licensed persons and may not lawfully be rendered by an ordinary business corporation, restricts share ownership in a professional corporation to qualified persons, requires at least one-half of the combined directors and officers to be qualified persons, and allows a professional corporation to render professional services only through natural persons permitted to render them. The Board’s unprofessional-conduct rule then reaches the employment relationship directly: it is unprofessional conduct for a physician or physician assistant to practice as the partner, agent, or employee of, or in joint venture with, a person who does not hold an equivalent license, unless the licensee is incorporated as a professional entity or is practicing with a licensed health care facility or provider under a written agreement that the relationship may not affect the licensee’s independent judgment. The uniform licensing statute makes aiding a person to circumvent a licensure law, assisting unlicensed practice, and allowing another person or organization to practice by use of the licensee’s license unprofessional conduct. None of these sections addresses the division of fees; the Board’s rule speaks to the employment relationship and the independence of judgment, not to how revenue is shared.