Key Takeaways

• Hyperbaric therapy is the practice of medicine in California, whether the facility is marketed as “medical” or “wellness.” The Corporate Practice of Medicine analysis applies to both, and California has no CPOM amnesty program.
• Remediation requires forming a physician-owned professional corporation to hold the clinical practice going forward, recasting the existing entity as a Management Services Organization, and drafting a compliant Management Services Agreement.
• Hyperbaric-specific complications include physician-partner sourcing (relatively few California physicians have hyperbaric training), chamber prescription and supervision protocols, oxygen supply-chain documentation, and off-label marketing exposure that runs alongside the CPOM issue.
• Historical exposure for operating a hyperbaric business through a non-compliant entity can include contract voidability, civil penalties under B&P § 17200, false-advertising exposure under B&P § 17500 for wellness marketing that overstated efficacy, and — as recent Attorney General enforcement has shown — potential personal exposure for non-licensee owners.
• Voluntary remediation is materially stronger than reactive remediation. The California Attorney General’s June 2026 Carbon Health settlement demonstrated that personal civil penalties on non-licensee owners are a documented reality, not a theoretical risk.

If you own a California hyperbaric chamber business — a wellness studio, a recovery center, an anti-aging clinic, an athlete-recovery facility, and it operates through an LLC or a non-physician corporation, you have a compliance problem that is not going to resolve itself. The seller who marketed the business as “wellness” and told you it was outside the medical framework was working from a common but wrong understanding of California law. Hyperbaric oxygen therapy chambers are FDA-cleared Class II medical devices, hyperbaric therapy requires a physician prescription, and the California Corporate Practice of Medicine doctrine applies to any business that treats patients, regardless of how the marketing is framed or whether the revenue is cash-pay.

This post is the remediation guide specifically for hyperbaric businesses. It sits under the remediation pillar for California treatment businesses generally and covers the hyperbaric-specific issues the general pillar does not address. The general remediation playbook applies. Hyperbaric adds a specific set of complications.

Why the ‘Wellness’ Framing Does Not Solve the Problem

The most common misconception among owners of non-compliant hyperbaric businesses is that positioning the facility as “wellness” or “recovery” removes it from the medical framework. It does not.

Three regulatory facts converge on the same conclusion:

FDA classification. Hyperbaric chambers are FDA-cleared Class II medical devices under Product Code CBF, cleared through the 510(k) pathway. The classification is medical.

Prescription status of medical-grade oxygen. Medical-grade oxygen is a prescription drug. Filling a chamber with medical-grade oxygen for administration to a person is the administration of a prescription drug.

California CPOM doctrine. B&P §§ 2052 and 2400 and the Moscone-Knox Professional Corporation Act apply to the practice of medicine, defined by function rather than marketing. The doctrine does not turn on whether the facility calls itself a “clinic,” a “spa,” a “wellness center,” or a “recovery lounge.” It turns on whether the business treats patients — which a hyperbaric business does.

The result: a hyperbaric business operating through an LLC or a non-physician corporation is out of compliance regardless of what its marketing says. Wellness framing does not resolve the issue. In some cases, wellness framing adds a separate exposure category (false advertising under B&P § 17500, consumer-protection claims) on top of the underlying CPOM problem.

The Hyperbaric-Specific Remediation Path

The general seven-step remediation playbook — situational assessment, physician-partner path, PC formation, bifurcated asset transfer, MSO conversion and MSA drafting, historical exposure mitigation, post-remediation compliance discipline, applies to hyperbaric remediation. Six hyperbaric-specific considerations warrant additional attention.

1. Physician-partner sourcing is harder for hyperbaric. Relatively few California physicians have formal hyperbaric training. UHMS-trained hyperbaric medicine specialists tend to concentrate in academic centers, wound-care programs, and hospital outpatient departments. A wellness or recovery hyperbaric business is unlikely to attract that profile of physician as a shareholder-partner. More realistic candidates include physicians with wound-care experience, emergency medicine backgrounds, sports medicine training, or family/internal medicine training willing to develop hyperbaric-specific protocols. The owner should not assume any California-licensed physician is qualified — the physician’s background matters for clinical practice, malpractice insurance, and defensibility of the arrangement.
2. Prescription and protocol infrastructure. A compliant hyperbaric practice requires (a) a physician (or NP/PA within scope) prescription for each patient before treatment begins, based on a good-faith prior examination, (b) documented treatment protocols specifying the pressure, duration, frequency, and number of sessions for the specific indication, (c) session-level documentation and clinical monitoring, and (d) a defined process for adverse events and clinical incidents. Businesses that have been operating on a “sign a waiver and get in the chamber” model need this infrastructure built from scratch as part of remediation. This is not a documentation exercise the owner can complete over a weekend — it is a substantive clinical program build.
3. Oxygen supply chain and prescription documentation. Medical-grade oxygen requires prescription-tracked procurement. The remediated PC needs a documented oxygen supply relationship (typically with a specialty medical gas provider), prescription records that support the procurement, and inventory and administration tracking that would survive DEA-style scrutiny even though oxygen itself is not a controlled substance. Businesses that have been sourcing oxygen through non-medical channels need to convert to a compliant supply chain during remediation.
4. Off-label marketing rebuild. Most wellness hyperbaric businesses’ marketing includes specific outcome claims for off-label indications — post-concussion recovery, TBI resolution, cognitive enhancement, long COVID resolution, cancer support, autism improvement, athletic performance. Some of this marketing may be defensible with careful qualification; some of it is not. Remediation includes a marketing audit and rebuild that meets FDA guidance, California false-advertising law (B&P § 17500), and the FTC endorsement guides for any testimonial or influencer content. Historical marketing exposure — content that has been on the site or in advertising for months or years — is a separate analysis that may require decisions about takedowns, corrective disclosures, or (in some situations) proactive customer communication.
5. Chamber safety compliance. The FDA’s 2024 Letter to Healthcare Providers on hyperbaric device safe use reflected documented cases of chamber fires resulting in serious injuries and deaths. A compliant hyperbaric practice requires a documented safety program: chamber maintenance and inspection logs, staff training records, patient safety screening (medications, prohibited items, medical contraindications), and incident-response protocols. Businesses that have been operating without a documented safety program have both an ongoing safety exposure and a documentation gap that professional liability insurance may not cover retroactively.
6. Insurance and tail coverage. Professional liability insurance for hyperbaric practice is specific — general medical malpractice policies may not cover hyperbaric-specific incidents, and general liability policies do not cover malpractice at all. Remediation includes obtaining professional liability coverage for the new PC and tail coverage for pre-remediation clinical services delivered under the non-compliant structure. The owner’s personal exposure for pre-remediation services depends on the fact pattern; tail coverage is one of the tools that can mitigate it.

Historical Exposure Analysis — Hyperbaric Considerations

Historical exposure for a non-compliantly-operated California hyperbaric business runs through several channels.

CPOM exposure under B&P §§ 2052 and 2400. Operating a business that renders medical services without a compliant licensed structure is a public offense. Public prosecutors may seek civil penalties under B&P § 17200’s Unfair Competition Law. The California Attorney General’s June 2026 Carbon Health settlement demonstrated that CPOM enforcement can reach non-licensee owners personally — a $100,000 civil penalty was imposed on the non-licensee co-founder in that matter.

False-advertising exposure under B&P § 17500. Marketing that promised specific outcomes for off-label indications, misrepresented FDA approval status, or used testimonials that overstated typical results is exposed to false-advertising claims. This exposure is separate from CPOM and can be pursued by public prosecutors under § 17500 or by private plaintiffs under the Unfair Competition Law’s fraudulent-prong analysis.

Consumer-protection exposure. Refund demands, class actions, and individual claims based on marketing representations or on services rendered by a business not authorized to render them. Practices that have been operating for years with substantial patient volume may face meaningful exposure in this category.

Medical Board discipline for the physician of record. Any physician who served as medical director, collaborating physician, or otherwise lent their name to a non-compliant arrangement faces potential Medical Board discipline under B&P § 2264. The physician’s exposure is separate from the owner’s and needs to be addressed as part of remediation planning.

Payor recoupment. Limited for predominantly cash-pay practices. More significant for practices that have participated in commercial payor networks or accepted superbill reimbursement.

The point of the historical exposure analysis is not to alarm. It is to make clear that remediation converts the going-forward operation into a compliant structure but does not by itself extinguish the exposure accumulated during the non-compliant period. The historical layer needs its own analysis and mitigation plan.

Common Misconceptions in Hyperbaric Remediation

“I’ll rebrand as ‘wellness only’ and stop calling it therapy.” Rebranding does not change what the chamber does or what the business is under California law. It may reduce false-advertising exposure prospectively but does not resolve the CPOM issue and does not eliminate historical exposure.

“I’ll add a medical director and keep the LLC.” A medical director agreement does not substitute for a physician-owned clinical entity. The LLC still cannot render medical services in California. The clinical services need to be delivered by a physician-owned PC.

“I’ll switch to renting the chambers to clients instead of running sessions.” Depending on the specifics, this may or may not remove the practice from the CPOM analysis, and it likely creates new exposure categories — device rental of Class II medical devices to consumers without prescription and supervision has its own regulatory profile. This is a substantive legal question, not a business model workaround.

“I’ll just wind down.” Winding down does not extinguish historical exposure. Regulatory limitations periods and consumer statutes-of-limitations continue to run after operations cease. Wind-down may be the right answer in specific fact patterns, but it is a substantive legal decision that requires the same analysis as remediation.

“The FDA doesn’t regulate wellness use of chambers, so this is fine.” The FDA classifies HBOT chambers as Class II medical devices regardless of marketing. The FDA has publicly cautioned consumers about off-label HBOT claims and issued a 2024 letter to healthcare providers on chamber safety. The California CPOM doctrine applies regardless of federal enforcement priorities.

When to Talk to Counsel

As soon as you recognize the structure is not compliant. Not after a Medical Board inquiry, not after a payor audit, not after a patient refund demand, not after an FTC or California AG contact about the marketing. The Attorney General’s 2026 enforcement pattern — Art Center Holdings amicus brief in March, Aspen Dental settlement in May, Carbon Health settlement with personal penalty on the non-licensee founder in June, has made clear that California CPOM enforcement is expanding, and expanding in ways that reach individual owners.

Bay Legal, PC represents non-licensee owners of California hyperbaric businesses through the full remediation cycle: situational assessment, physician-partner sourcing, PC formation, MSA drafting, marketing rebuild, historical exposure analysis, and post-remediation compliance discipline. For guidance on your specific situation, call (650) 668-8000 or schedule a consultation at baylegal.com/contact.

Frequently Asked Questions

I own a hyperbaric wellness center through an LLC. Am I in trouble?

The candid answer is that most likely yes, at least from a compliance standpoint. Hyperbaric chambers are FDA-cleared Class II medical devices, hyperbaric therapy requires a physician prescription, and California’s Corporate Practice of Medicine doctrine applies to any business that treats patients. An LLC cannot render medical services in California under Cal. Corp. Code § 17701.04(e). Whether the compliance issue translates into practical enforcement risk depends on the specific facts. What you should not do is continue operating non-compliantly while you decide.

Can I keep marketing my facility as “wellness” if I add a physician-owner?

Compliance-wise, adding a physician-owner in a properly structured PC + MSO arrangement addresses the CPOM issue. The marketing issue is separate. Wellness positioning that includes specific outcome claims for off-label indications, testimonials that overstate typical results, or representations that imply broader FDA approval than exists is a distinct exposure category under B&P § 17500 and the Unfair Competition Law. Remediation typically includes a marketing rebuild, not just a structural fix.

Where do I find a California physician willing to be the shareholder of my PC?

It is often harder than owners initially expect. Hyperbaric-trained physicians are relatively concentrated in academic centers and hospital wound-care programs, and are less likely to serve as shareholders of a wellness-oriented business. More realistic candidates include physicians with wound-care experience, emergency medicine backgrounds, sports medicine training, or family/internal medicine training willing to develop hyperbaric-specific protocols. The compensation, buy-sell terms, and clinical authority the physician requires are the substantive negotiation.

Can my LLC “convert” into a professional corporation?

No. California does not allow it for the purpose of rendering professional services. The compliant path is to form a new physician-owned PC and transfer the clinical assets to it. The existing LLC survives as the Management Services Organization providing non-clinical services to the PC under an MSA.

What is the personal exposure for me as the non-licensee owner?

The California Attorney General’s June 2026 Carbon Health settlement imposed a $100,000 civil penalty on the non-licensee co-founder personally, in addition to $4.4 million in penalties against the operating entities. Personal exposure for non-licensee owners of non-compliant California treatment businesses is a documented reality. The specific exposure in any given fact pattern depends on the operating history, the marketing, the billing, and the physician-of-record arrangement — but the possibility of individual liability is no longer theoretical.

Talk to a California Hyperbaric Remediation Attorney

Bay Legal, PC represents non-licensee owners of California hyperbaric businesses through structural remediation and historical exposure mitigation. For guidance on your specific situation, call (650) 668-8000 or schedule a consultation at baylegal.com/contact.