Who Can Own a Med Spa in California? Complete 2026 Guide

California has some of the strictest rules in the country on who can own and operate a medical spa. A regular LLC or standard corporation cannot own a med spa that delivers medical services. This isn't a technicality — it's the Corporate Practice of Medicine doctrine, and violations can shut down your practice, expose your providers to disciplinary action, and in serious cases, result in criminal liability.

In 2026, however, AB-890 introduced a new path for qualifying nurse practitioners. Here's who can own a California med spa, what structure you need, and the most common mistakes operators make when setting up their business.

California's Corporate Practice of Medicine Doctrine

California prohibits lay entities — regular LLCs, non-medical corporations, and business owners without medical licenses — from owning a medical practice or employing physicians to control medical decision-making. This prohibition is known as the Corporate Practice of Medicine (CPOM) doctrine.

The intent is straightforward: medical decisions must be made by licensed professionals, not by business owners optimizing for profit. When a non-physician entity controls a medical practice, there is a structural conflict between financial incentives and patient welfare — exactly what CPOM is designed to prevent.

This is why a standard LLC cannot own a California med spa. Even if the LLC hires licensed providers to perform the procedures, the entity itself cannot hold ownership or control over a practice delivering medical services. The structure itself is illegal, regardless of how competent the providers are.

CPOM enforcement in California comes through multiple channels: the Medical Board of California (for physician and NP licensees), the Board of Registered Nursing (for RN/NP licensees), and the Attorney General's office (for criminal CPOM violations). A business does not have to be flagged by a patient complaint to trigger investigation — an anonymous tip from a competitor, a billing audit, or a workers' compensation claim can all surface a CPOM problem.

Violations of the CPOM doctrine can result in disciplinary action from the Medical Board, fines, forced dissolution of the business arrangement, and in serious cases, criminal liability. Contracts entered into by an illegally structured entity may also be unenforceable — meaning your medical director agreement, vendor contracts, and lease agreements could all be voided.

Who Can Own a California Med Spa — Summary

Physician Ownership: The Traditional Path

The established path for California med spa ownership runs through a Professional Corporation (PC) controlled by a licensed physician. This has been the standard structure since California's CPOM enforcement took shape, and it remains the most common ownership model for med spas in the state.

Key requirements for physician ownership:

• The entity must be a Professional Corporation (PC) — not an LLC, S-corp, or general corporation
• The physician must hold at least 51% controlling interest in the PC
• The physician must be licensed as an MD or DO in California, with an active, unrestricted license
• Other licensed professionals — additional physicians, dentists — can hold the remaining shares
• Non-physicians cannot hold shares in the PC that controls medical services

The physician-owner does not need to perform every procedure, but they must be genuinely involved in the practice's medical oversight. They should be approving clinical protocols, available during operating hours, conducting regular chart reviews, and visiting the facility. A physician whose name appears on the incorporation documents but who has no real involvement is a "ghost" arrangement — a CPOM violation even when the nominal structure appears correct.

The physician-owner is also typically the medical director unless another physician is contracted for that role. Either way, the duties, supervision schedule, and compensation must be documented in a written medical director agreement. For details on that relationship, see California Med Spa Medical Director Requirements.

AB-890: The New NP Ownership Path (2026)

AB-890, signed into law in 2020, expanded practice authority for nurse practitioners in California through a phased implementation. The law created two tiers of NP designation — 103 NP and 104 NP — each with different levels of autonomy.

As of January 1, 2026, qualifying 104 NPs can own and operate a med spa independently, without physician supervision. This is a significant change that opened ownership access to experienced nurse practitioners for the first time in California history.

To qualify as a 104 NP under AB-890:

• Hold an active California NP license in good standing with the Board of Registered Nursing
• Have practiced as a 103 NP in California for at least 3 years (not 3 years total NP experience — specifically as a 103 NP after applying for that designation)
• Practice within the population focus of your national NP certification (family, adult-gerontology, pediatrics, women's health, or mental health/psychiatric)
• Apply for 104 NP designation through the Board of Registered Nursing

A 103 NP — the intermediate designation — can work in a med spa setting but must practice within a group that includes at least one physician. They cannot serve as the sole owner or independent medical director of a med spa.

Standard NPs without either the 103 or 104 designation — which is the majority of practicing NPs in California — still require physician supervision and cannot own a med spa independently. If you're considering this path, verify your designation status with the Board of Registered Nursing before structuring your business.

For a full breakdown of the 103 vs. 104 NP pathways, see California Nurse Practitioner Med Spa Ownership Under AB-890.

Can Non-Physicians Invest in a California Med Spa?

Yes — but only through a carefully structured Management Services Organization (MSO) arrangement. The MSO model is the most common way non-physician investors participate in California med spas without violating CPOM.

Under the MSO structure, the business is split into two distinct layers:

• The Professional Corporation (PC) — owns and controls the clinical side; must be physician (or 104 NP) owned and controlled; delivers all medical services; signs all clinical agreements
• The Management Services Organization (MSO) — owns the business infrastructure; can be owned by non-physicians or regular investors; provides non-clinical administrative services to the PC under a Management Services Agreement

What the MSO Can Legitimately Handle

The MSO can legitimately provide: billing and collections for services rendered by the PC; human resources and payroll administration for non-clinical staff; marketing, advertising, and patient communications; facilities and equipment leasing to the PC; technology systems and software; and general business operations support.

The MSO charges the PC a management fee for these services — typically structured as a flat fee or percentage of revenue. This fee must reflect fair market value for the services provided; above-market fees that extract value from the PC to non-physician investors are a CPOM red flag.

What the MSO Cannot Do

The MSO cannot direct clinical care, determine which treatments or procedures to offer, override physician decisions, hire or fire licensed clinical staff, set treatment protocols, or control any aspect of patient care. If the management contract effectively transfers clinical control to the MSO — even through financial pressure or contractual terms — it violates CPOM regardless of what the documents say.

Any MSO arrangement should be reviewed by a California healthcare attorney before implementation. The line between permissible management services and prohibited corporate control has been the subject of Medical Board enforcement actions, and the wrong structure can expose both the physician-owner and the MSO investors to serious liability.

Setting Up a California Med Spa Professional Corporation

A California med spa delivering medical services must be organized as a Professional Corporation (PC) — not a standard LLC, S-corporation, or general partnership. This is a hard requirement under California law, not a best practice. Here's the complete setup process.

Step 1: File Articles of Incorporation with the Secretary of State

A California Medical Professional Corporation is formed by filing Articles of Incorporation (Form ARTS-PC) with the California Secretary of State. The filing fee is $100. The articles must identify the professional purpose of the corporation and list the initial directors — all of whom must be licensed physicians (or 104 NPs). Standard processing takes 2–4 weeks; expedited same-day processing is available for an additional fee.

Step 2: Draft Corporate Bylaws

Bylaws govern how the corporation operates — voting rights, officer roles, how decisions are made, ownership transfer restrictions, and what happens when a physician-owner loses their license. For a med spa PC, bylaws should explicitly address the requirement that at least 51% controlling interest remains with a licensed physician at all times, and what happens if the physician-owner dies, becomes incapacitated, or has their license suspended.

Step 3: Obtain a Federal EIN and Open a Business Bank Account

Apply for a Federal Employer Identification Number (EIN) through the IRS — takes minutes online. You'll need the EIN to open a business bank account, apply for licenses, and process payroll. Keep the PC's finances completely separate from personal accounts; commingled funds are a corporate veil issue that can expose the physician to personal liability.

Step 4: Register with the Medical Board of California

California med spas must register with the Medical Board of California. The registration requires information about the medical director, proof of qualifying ownership structure, a list of procedures performed, and documentation of physician oversight. The Medical Board may inspect the facility as part of the approval process. Check current registration requirements at mbc.ca.gov — Medical Spas.

Step 5: Obtain State and Local Business Licenses

In addition to Medical Board registration, a California med spa needs: a California business license, a city or county business license (requirements vary by municipality), a fictitious business name (DBA) filing if operating under a name different from the PC's legal name, and a seller's permit if selling any taxable retail items. Check with your city's business licensing office — some cities have additional requirements for healthcare facilities.

Step 6: Negotiate and Execute a Medical Director Agreement

If the physician-owner is also serving as medical director, the agreement documents their duties, supervision schedule, compensation (if separate from ownership distributions), protocol approval process, and availability requirements. If a different physician is the medical director, this agreement is the primary document defining the legal relationship. It must be in writing, specify compensation at fair market value, and define a clear termination process.

Step 7: Develop and Approve Clinical Protocols

The medical director must approve written clinical protocols for every procedure the med spa offers before the first patient is seen. These protocols must be on file, reviewed regularly, and updated when procedures or equipment change. Operating without approved protocols is a Medical Board violation regardless of how experienced your providers are.

Estimated timeline: Secretary of State filing takes 2–4 weeks. Medical Board registration adds 4–8 weeks. Total setup from filing to approval: typically 6–12 weeks, not counting time to negotiate agreements or secure a location.

Common Ownership Mistakes That Get California Med Spas Investigated

Operating as an LLC

The single most common structural mistake: forming an LLC instead of a Professional Corporation. It seems like a minor technical difference, but it's a bright-line CPOM violation. Some operators form an LLC because it's faster, cheaper, and they've seen it done in other states. California law is unambiguous — a LLC cannot deliver medical services. Even if all LLC members are physicians, the entity type is wrong.

The Physician-in-Name-Only PC

The physician shows up on the incorporation documents but has no real involvement — no protocol approval, no chart reviews, no facility visits, no meaningful medical oversight. This is a CPOM violation even when the nominal structure is correct. The Medical Board looks at actual practice, not paperwork. When investigators interview staff and no one can identify the medical director, or the medical director's signature appears on protocols they clearly didn't write, enforcement action follows.

Giving the MSO Clinical Control

Some MSO arrangements cross the line by giving the MSO effective control over the practice — through management fees that leave the PC undercapitalized, management contracts that require MSO approval before the physician can make clinical changes, or staffing arrangements where the MSO hires the clinical providers and has power to remove them. Even if the PC technically "owns" the clinical side, a sufficiently controlling MSO creates a CPOM violation.

Using a 103 NP as the Sole Owner

A 103 NP practicing under AB-890 cannot own a med spa independently. Some operators — particularly NPs who have recently obtained their 103 designation — assume that any AB-890 designation permits independent ownership. Only the 104 designation (available after 3 years as a 103 NP) confers independent practice authority. A 103-NP-owned practice without a supervising physician is a violation of both AB-890 and CPOM.

Out-of-State Physician as PC Controller

A physician licensed in another state cannot hold the controlling interest in a California PC delivering medical services. The physician must hold an active, unrestricted California license. If your physician-owner moves to another state and lets their California license lapse — even temporarily — the PC's qualifying ownership structure is disrupted.

Summary: California Med Spa Ownership in Plain Terms

California's ownership rules for med spas are stricter than most states, but the framework is consistent once you understand it:

• Only an MD, DO, or qualifying 104 NP can own the clinical side of a California med spa
• The entity must be a Professional Corporation — not an LLC, not a general corporation
• Non-physician investors can participate through an MSO that provides only non-clinical services
• The physician-owner must be genuinely involved — not a paperwork figurehead
• Getting this wrong exposes both the business and licensed providers to Medical Board action
• Setup takes 6–12 weeks from filing to Medical Board approval; plan accordingly
• Every procedure the med spa offers needs a physician-approved written protocol before you open

See the California Med Spa Compliance Checklist for a full pre-opening checklist covering ownership structure, licensing, staffing, and protocol requirements.

This article is for informational purposes only and does not constitute legal advice. California corporate practice of medicine rules are complex and fact-specific. Consult a California healthcare attorney before structuring your med spa ownership.

Frequently Asked Questions