How to Start a Med Spa Business in California

California has the strictest medical spa ownership rules in the country. Not “among the strictest.” The strictest. Before you sign a lease, buy equipment, or hire a medical director, you need to understand one foundational rule: in California, only licensed physicians or physician-owned Professional Corporations can own and operate a medical practice. That includes med spas.

Get this wrong and you’re not just facing a fine — the Medical Board of California actively investigates and prosecutes corporate practice of medicine violations. Penalties include cease-and-desist orders, civil penalties, and in serious cases, criminal charges.

Here’s what compliant ownership actually looks like, and what it costs.

Ownership Rules — Physician or PC Only

California’s corporate practice of medicine doctrine (CPOM) prohibits non-physicians from owning or controlling a medical practice. The theory: business owners shouldn’t be making decisions that affect patient care. In practice, it means the legal owner of your med spa must be a licensed MD or DO, or a Professional Corporation with physician majority ownership.

Professional Corporations (PCs)

A PC is a special type of corporation for licensed professionals. For medical practices in California, physicians must hold at least 51% ownership in the PC. The remaining 49% can be held by other licensed healthcare professionals — but not by non-licensed investors or business partners.

PCs file Articles of Incorporation with the California Secretary of State for $100. They’re governed by the Moscone-Knox Professional Corporation Act, and they require ongoing compliance: annual Statement of Information filings, and adherence to Medical Board requirements on top of standard corporate formalities.

LLCs Are Not an Option

This point trips up a lot of entrepreneurs coming from other industries. In California, you cannot form an LLC for a medical practice. Not even with a physician as the sole member. The LLC structure is simply not permitted for entities that provide professional medical services. If someone tells you otherwise, get a second opinion from a California healthcare attorney.

The Medical Board Watches

The Medical Board of California (mbc.ca.gov) enforces CPOM actively. They investigate complaints about unlicensed ownership, non-physician control over clinical decisions, and improper business structures. The med spa industry is on their radar — particularly as the industry has grown and attracted investors who don’t understand California-specific rules.

AB 890: Nurse Practitioners Get In Starting 2026

This is a significant development worth knowing about. AB 890, signed in 2020, phases in independent practice rights for qualified Nurse Practitioners. Starting in 2026, NPs who meet specific experience requirements can own and operate medical practices — including med spas — without physician supervision or a physician co-owner.

To qualify, an NP must complete a transition-to-practice period: at least three years or 4,600 hours of practice under physician oversight after licensure. That clock is already ticking for NPs who started tracking in 2023. If you’re an NP, check your hours and talk to a healthcare attorney about whether you’ll qualify come 2026.

The MSO Structure for Non-Physicians

So what happens if you’re the entrepreneur with the capital, the business plan, and the vision — but you’re not a physician?

You use a Management Services Organization structure. It’s the standard legal workaround used by private equity, business investors, and non-physician entrepreneurs across California’s healthcare industry. It’s not a loophole — it’s a recognized structure, but only if built correctly.

How It Works

The MSO is a separate legal entity — typically an LLC — that you own and operate. The MSO provides business management services to the physician-owned PC: billing, marketing, scheduling, HR, facility management, equipment leasing, and administrative operations. The PC pays the MSO for these services under a management services agreement.

You own the MSO. The physician owns the PC. The two entities are legally distinct.

The Critical Line

The physician retains full clinical autonomy. The MSO cannot direct, influence, or control any medical decision — what treatments to offer, how to perform procedures, what protocols to follow, how to handle patient complications. If the MSO crosses into clinical territory, the structure collapses and you’re back to a CPOM violation.

This is why the management services agreement between the MSO and PC has to be drafted carefully. It needs to define exactly what the MSO does and doesn’t do. The compensation structure matters too — if the management fee looks like profit-sharing based on clinical volume, regulators can argue you’re effectively buying into the medical practice.

You Need a Healthcare Attorney

This is the one part of med spa formation where you cannot DIY, use a generic template, or skip to save money. The MSO-PC structure requires a healthcare attorney who specializes in California medical practice law. Expect to pay $3,000–$10,000 for proper legal structuring. That’s not optional — it’s the price of building a compliant business.

A business attorney who doesn’t specialize in healthcare will not know the nuances. California’s CPOM doctrine has a long litigation history, and the MSO-PC agreements that survive scrutiny are drafted by people who know that history.

Medical Director and Staffing

The Medical Director

Every California med spa needs a medical director — a licensed MD or DO who oversees all clinical procedures performed at the facility. This person reviews protocols, supervises staff, signs off on standing orders, and is the accountable physician of record for patient care.

Medical directors for med spas typically work on contract rather than as full-time employees. Costs range from $2,000 to $15,000 per month depending on their involvement level, the procedure mix, their specialty, and the market. A dermatologist or plastic surgeon with a strong aesthetic background commands more. A family medicine physician doing part-time oversight charges less — but may provide less hands-on clinical guidance.

Don’t just hire whoever accepts the lowest fee. Your medical director’s name is on the line clinically, and a disengaged one creates compliance and liability problems. Find someone who will actually show up, review charts, and be reachable.

Nurse Practitioners and Physician Assistants

NPs and PAs can perform treatments under physician supervision and pursuant to standardized procedures or collaborative agreements. Botox, fillers, laser treatments — these are all within scope for qualified NPs and PAs. In practice, NPs and PAs perform the bulk of treatments at most med spas.

Registered Nurses

RNs can administer treatments under delegation from a physician, NP, or PA. The delegation must be appropriate — the delegating provider needs to be accessible, the RN needs to be competent in the specific procedure, and the delegation has to be documented. RNs administering injectables without proper delegation is a common compliance failure.

Medical Assistants and LVNs — Hard Stop

This one matters. Medical Assistants (MAs) and Licensed Vocational Nurses (LVNs) cannot perform injectables or laser procedures in California med spas. Not under supervision. Not with a physician in the building. Not at all.

MAs are unlicensed personnel. The California Medical Board’s position is that administering injectables — including Botox and dermal fillers — constitutes the practice of medicine and cannot be delegated to unlicensed staff. LVNs have a limited scope of practice that similarly doesn’t extend to these procedures.

This trips up med spa owners who come from states with broader delegation rules, or who hear anecdotally that “everyone does it.” Some do. And some get investigated. Staff your treatment rooms with NPs, PAs, or RNs with proper delegation — not MAs trying to do the same work at a lower pay rate.

Medical Records

California law requires you to retain medical records for a minimum of seven years from the date of service (or seven years after a minor reaches age 18, whichever is later). Your EMR system needs to be HIPAA-compliant, and you’ll need a Notice of Privacy Practices posted and distributed to patients. Budget for an EMR platform — expect $200–$500/month for a med spa-appropriate system.

Startup Costs at a Glance

California isn’t cheap. Med spa formation here costs more than in most states, and that’s before you get to California’s construction costs, labor regulations, and ongoing compliance obligations. Here’s what you’re actually looking at.

Entity Formation

PC formation: $100 to file Articles of Incorporation with the Secretary of State at bizfileOnline.sos.ca.gov, plus ongoing Statement of Information filings ($25 biennial)
MSO LLC formation (if you’re a non-physician using the MSO structure): $70 to file Articles of Organization, plus California’s $800/year franchise tax — every year, regardless of revenue

Medical Director

Budget $2,000–$15,000 per month. On the low end, you’re getting minimal oversight. On the high end, you’re getting an engaged specialist with real aesthetic medicine experience. Most well-run med spas settle somewhere in the $4,000–$8,000/month range for a solid contract medical director.

Equipment

This is where startup budgets get real. A minimally equipped med spa — laser, IPL, body contouring device, basic injectables setup — runs $50,000–$200,000. Add RF microneedling, cryolipolysis, or multiple laser platforms and you’re at the top of that range or beyond it. Many practices lease equipment initially to preserve cash, but leasing has its own long-term cost implications.

Build-Out

California construction costs are among the highest in the country. A med spa build-out — treatment rooms, reception, proper ventilation for lasers, plumbing for certain devices, ADA compliance — typically runs $75,000–$200,000. In Los Angeles or San Francisco, you’ll feel that on the high end. Expect permitting to take longer than you expect and cost more than the contractor’s first estimate.

Medical Malpractice Insurance

Required. Budget $5,000–$20,000 per year depending on procedure mix, staff size, and coverage limits. Laser procedures and injectables both carry real liability. Don’t cut corners here.

Total Startup Range

Put it all together — entity formation, legal fees, medical director (first few months), equipment, build-out, insurance, working capital — and you’re looking at $200,000–$600,000+ to open a compliant California med spa. That’s the realistic range. Entrepreneurs who budget $100,000 for a California med spa typically either run out of money before opening or cut compliance corners that create bigger problems later.

Before You Open

A few things that don’t fit neatly into categories but matter significantly.

Healthcare Attorney First, Everything Else Second

Hire a California healthcare attorney before you sign any agreements, form any entities, or approach any physicians about partnership. The attorney structures the PC, drafts the MSO agreement, reviews your management fee arrangements, and makes sure the whole thing holds up. Doing it backwards — forming entities and then trying to fix them — costs more and sometimes can’t be fixed.

City and County Business Licenses

California state formation doesn’t substitute for local requirements. You’ll need a city business license wherever you operate. Some cities have additional requirements for healthcare facilities — check with your city’s business licensing office before signing a lease.

CDTFA Seller’s Permit

If you sell retail products — skincare, sunscreen, supplements — you need a seller’s permit from the California Department of Tax and Fee Administration. It’s free to register. California’s statewide base sales tax is 7.25%, and your city or county may add to that.

Employment Law

California has aggressive employment regulations. The 2026 minimum wage is $16.90/hour. Mandatory paid sick leave, paid family leave contributions, and strict independent contractor classification rules under AB5 all apply. If you’re classifying nurses or aestheticians as independent contractors rather than employees, talk to an employment attorney — California’s AB5 makes that classification very difficult to defend in most service contexts.

The AB 890 Watch

If you’re an NP considering ownership in 2026, start tracking your transition-to-practice hours now if you haven’t already, and consult a healthcare attorney about the specific requirements. The regulations are still being finalized in some areas, and early preparation matters.

California med spas are a real business opportunity — the market is large, the demographics are favorable, and demand for aesthetic medicine isn’t declining. But the compliance structure here is genuinely more complex than in most states. The CPOM doctrine, the PC requirement, the MSO structure, the staffing scope-of-practice rules — these aren’t bureaucratic annoyances. They’re the legal foundation your business stands on.

Get the healthcare attorney. Build the structure correctly. Then worry about equipment and marketing.