Can RNs Open a Med Spa in California? A 2026 Guide
California has the strictest Corporate Practice of Medicine laws in the US. Here is how RNs can navigate the Moscone-Knox Act and the MSO Model.
Executive Summary: The Short Answer
No, a Registered Nurse (RN) CANNOT own a medical spa practice in California.
Under the Moscone-Knox Professional Corporation Act, only licensed physicians (or in specific cases, independent Nurse Practitioners under AB 890) can own the “Professional Medical Corporation” that treats patients. However, RNs can profit by owning a Management Services Organization (MSO) that manages the non-clinical business assets.
The 3 Pillars of California Med Spa Business
If you are opening a spa in Los Angeles, San Diego, or SF, the Medical Board of California is aggressive about enforcement. Your structure must rely on the MSO model.
1. The “Moscone-Knox” Barrier
This act defines who can own a professional medical corporation. RNs are not on the list of majority owners.
- The Restriction: A standard LLC or an RN cannot employ a doctor. This is considered the corporate practice of medicine (CPOM).
- The Requirement: You must partner with a physician (or an eligible “104” Nurse Practitioner) who forms a Professional Medical Corporation to hold the medical practice.
2. The MSO Solution (Your Entity)
To legally profit, you form a Management Services Organization (MSO).
- What you own: The MSO owns the branding, the real estate, the furniture, and employs non-clinical staff.
- How you get paid: The Medical Corp pays your MSO a “management fee.”
Crucial: In California, percentage-based fees are heavily scrutinized. Flat fees for services rendered (marketing, billing, rent) are the safest route.
3. The Good Faith Exam (GFE)
California law requires a Good Faith Exam by a physician, Nurse Practitioner, or Physician Assistant before an RN performs any treatment.
This exam cannot be delegated to the RN. Once the patient is cleared, the RN can treat under “standardized procedures.”
Need certification to practice in CA? Read our guide on How to Become an Aesthetic Nurse Injector in California.
Comparison: RN vs. NP vs. MD Ownership (CA)
Frequently Asked Questions
Can I split fees with the Medical Director?
Absolutely Not. California Business and Professions Code Section 650 strictly prohibits fee-splitting. You cannot pay a physician a commission or percentage of patient revenue for their license. The MSO fee must be fair market value for administrative services only.
Can an RN perform Botox without the doctor present?
Yes, but only if a standardized procedure is in place AND a Good Faith Exam has been performed by an appropriate provider (MD/PA/NP) first. The supervising physician does not need to be in the room but must be reachable.
Can I own 49% of the medical practice as an RN?
Yes, with caveats. California allows certain allied health professionals (like RNs) to own up to 49% of a Medical Corporation, provided the other 51% is owned by physicians. However, the MSO model is often preferred for liability protection and business control.