The pitch was simple enough. Sign with the dental support organization, hand off the billing headaches, focus on patients, and walk away with a check that reflected years of practice-building. For many California dentists, the DSO deal felt like the exit they had been working toward.
Then something changed. The services the DSO promised were not delivered. The management fees kept climbing while practice revenue stagnated. The DSO started making decisions that felt a lot like running the practice without a license. Or the rollover equity that was supposed to appreciate turned into a dispute over valuation and control. Now the deal that was meant to reward you has become a fight you never planned for.
DSO disputes are among the most complex and high-stakes legal situations a California dentist can face. The contracts are long, the power imbalance at signing is real, and the regulatory landscape layered under the commercial relationship adds risks that neither party always fully understands up front. This guide explains how these disputes arise, what legal remedies are available, and what California law says about the line a DSO cannot legally cross.
How DSO Deals Are Structured in California
Understanding what can go wrong in a DSO deal requires first understanding how they are built. California law prohibits non-dentists from owning or controlling a dental practice under Business and Professions Code section 1625 et seq. and the broader corporate practice of dentistry doctrine. A DSO cannot simply buy your practice and run it. Instead, the typical structure creates two separate entities working in tandem.
You, the licensed dentist, own and operate a professional corporation (PC) that holds the dental license and retains control over all clinical decisions. The DSO owns the non-clinical assets: the equipment, the office lease, the software, the brand. The link between these two entities is a Management Services Agreement, which spells out what the DSO provides and what it gets paid. On paper, the dentist runs the dentistry; the DSO runs the business.
In practice, the line between those two roles blurs constantly. How patient scheduling is set, how treatment plan acceptance rates are tracked, how hygienists are compensated, whether the DSO can replace you as the nominal owner of the PC if you push back on its directives: these are the pressure points where legally structured deals cross into legally problematic territory. And those are precisely the places where disputes ignite.
When a DSO Deal Goes Wrong: The Most Common Disputes
Every DSO dispute has its own facts, but the patterns repeat. Understanding which category your situation falls into helps clarify the legal theories available to you.
The DSO Fails to Deliver Promised Services
You signed the MSA based on specific representations about billing support, marketing, staffing, and patient volume. If the DSO has not delivered what it promised, or has delivered it negligently, you may have breach of contract claims. Your damages are measured by the gap between what you were promised and what you actually received, which can include lost revenue, the cost of correcting deficient billing, and consequential losses caused by the failure.
These claims live or die on the contract language and the representations made during negotiations. If the DSO made specific promises in writing, those are evidence. If the MSA contains integration clauses that exclude everything outside the four corners of the document, oral promises become harder to enforce. Get your MSA, every amendment, and every material email in front of a business litigation attorney before concluding that your claims are too weak to pursue.
The DSO Crosses the Corporate Practice Line
California’s corporate practice of dentistry doctrine is not merely regulatory background. It is enforceable, and DSO overreach into clinical territory can void the entire management agreement.
If your DSO has been setting treatment protocols, dictating which procedures to recommend, controlling patient scheduling to hit revenue targets, directing how you code and bill for clinical services, or tying employee compensation to product sales without your genuine approval, those are red flags for corporate practice violations. The California Dental Board has long held that these decisions belong to licensed dentists, not to management companies.
SB 351, which took effect January 1, 2026, codified these restrictions into binding statute for private equity and hedge fund-backed DSOs. Under SB 351, any contract provision that allows an investor-backed DSO to interfere with your clinical judgment is void, unenforceable, and against public policy. The California Attorney General now has express authority to seek injunctions and equitable remedies against violating DSOs, and has already demonstrated willingness to act: Aspen Dental Management reached a $2 million settlement with the California AG in 2026 over allegations of unlawfully controlling clinical practices and directing treatment decisions through its DSO structure.
If your DSO is PE-backed and has been telling you how to practice dentistry, SB 351 may give you the legal footing to challenge the agreement itself.
The Equity Rollover Dispute
Many DSO affiliations involve a rollover equity component where you receive cash at closing and retain a minority equity stake in the DSO platform, which is supposed to appreciate through growth and an eventual second-bite transaction. When the platform underperforms, changes strategy, or is sold at a valuation that dilutes your stake in ways you did not expect, disputes follow.
These situations involve breach of contract, breach of fiduciary duty, and potentially fraud or fraudulent inducement claims if the DSO misrepresented the platform’s financial position, growth trajectory, or the terms governing your equity at the time you rolled it in. California law imposes a duty of good faith and fair dealing on all contracts, and courts have found that parties can breach this duty through conduct that is technically within the letter of the agreement but designed to deprive the other party of its expected benefit.
The DSO Tries to Replace You as Practice Owner
One of the most aggressive DSO dispute scenarios involves the DSO exercising what are commonly called continuity planning agreements or assignable options: contract provisions that give the DSO the right to replace you as the PC owner with another dentist of its choosing if you breach the MSA, fail to meet performance targets, or simply become inconvenient.
A case currently pending before the California Court of Appeal, Art Center Holdings, Inc. et al. v. WCE CA ART, LLC et al. (No. B338625), is directly testing whether these provisions violate California’s corporate practice of medicine doctrine. The California Attorney General and the California Medical Association have both filed briefs in the case arguing that the mere existence of these contractual replacement rights constitutes unlawful corporate control over the PC. A ruling against the DSO structure could render these provisions void across virtually every PE-backed platform in the state.
If your DSO is threatening to replace you under such a provision, or has already attempted to do so, you may have grounds to challenge that provision as void under California law even before the appellate court rules.
Your Legal Remedies as a California Dentist
When a DSO dispute becomes a legal dispute, several overlapping remedies may be available depending on your specific facts.
Breach of Contract
Your MSA is a contract, and if the DSO has not performed its obligations, California contract law gives you the right to sue for actual damages, consequential damages that were foreseeable at the time of contracting, and in some circumstances rescission of the entire agreement. Rescission is a particularly powerful remedy when the DSO’s breach has been so material that the fundamental purpose of the deal has failed.
Breach of Fiduciary Duty
Depending on how your deal was structured and whether a partnership, joint venture, or equity co-ownership relationship exists, the DSO may owe you fiduciary duties. Breach of fiduciary duty carries the potential for punitive damages in California when the conduct involves oppression, fraud, or malice.
Fraudulent Inducement
If the DSO made material misrepresentations to get you to sign, whether about its financial health, its services, the performance of comparable practices on its platform, or the terms of your equity, you may have fraud claims that run alongside the contract claims. Fraud in California can entitle you to rescind the contract and recover your out-of-pocket losses plus punitive damages.
Voiding the Agreement Under the Corporate Practice Doctrine
If the MSA crosses into controlling clinical decisions in violation of Business and Professions Code section 1625 et seq. and SB 351, the offending provisions may be void as against public policy. For PE-backed and hedge fund-backed DSOs, SB 351 makes this analysis cleaner: prohibited provisions are expressly void and unenforceable as of January 1, 2026.
Injunctive Relief
In situations where the DSO is taking actions that will cause immediate and irreparable harm to your practice, your license, or your ability to serve patients, California courts can issue preliminary injunctions to stop the conduct while the underlying case is litigated. Acting quickly matters because courts weigh whether the harm can be remedied by money alone. The longer a DSO controls your practice unlawfully, the harder it becomes to quantify what you have lost.
What About Your Dental License?
This is the risk that keeps dentists up at night. If the California Dental Board investigates your practice and finds that the DSO has been controlling clinical decisions, your name is on the license. You are the one who can face disciplinary action, not the DSO.
This exposure is real and it runs in both directions. A dentist who knowingly participates in a structure that violates the corporate practice doctrine may be held responsible for that violation. A dentist who is a victim of a DSO that overstepped its authority may still need to defend themselves before the Dental Board if a complaint arises.
This is one reason why acting early in a DSO dispute, before a Dental Board investigation adds a second front to your legal exposure, is so important. Business litigation counsel who understands the intersection of the DSO contract dispute and the regulatory risk to your license can help you navigate both simultaneously.
Before You Sign: Protecting Yourself at the Deal Stage
The best time to address DSO dispute risk is before the deal closes. If you are still in negotiations, a few provisions deserve particular attention.
The MSA’s definition of what the DSO controls versus what you control is the single most important battleground. Vague language that gives the DSO authority over “operational decisions” without clearly carving out clinical autonomy is an invitation to future conflict. Every provision that touches how patients are scheduled, how staff is managed, and how revenue targets are set should be reviewed against California’s corporate practice doctrine.
The continuity planning provisions and any assignable options should be scrutinized carefully given the pending Art Center Holdings appellate decision. At minimum, these provisions should be narrowly defined, with clear limitations on the circumstances in which they can be exercised.
Dispute resolution clauses determine whether you fight in arbitration or in court, which venue controls, and which state’s law applies. Many DSO agreements specify arbitration under the rules of a particular arbitral body, sometimes in a forum far from California. Negotiating this clause before signing can dramatically change the cost and dynamics of any future dispute.
Termination rights, exit rights, and the valuation mechanism that applies when you or the DSO want to end the relationship should be spelled out explicitly. An exit that depends on the DSO’s good-faith determination of fair market value without independent appraisal rights is a trap.
Frequently Asked Questions
Can I exit a DSO agreement if the DSO is not delivering what it promised?
Potentially yes. If the DSO has materially breached the MSA, California contract law may entitle you to terminate the agreement and pursue damages. The strength of your position depends on the specific terms of your contract, whether the breach is material, and whether you followed any cure procedures the MSA requires before termination.
Does SB 351 apply to my DSO if it is not backed by private equity?
SB 351’s specific prohibitions target private equity groups and hedge funds involved with physician or dental practices. If your DSO is not PE or hedge fund-backed, SB 351 does not apply directly. However, the underlying corporate practice of dentistry doctrine under Business and Professions Code section 1625 et seq. applies to all DSO structures regardless of ownership, and your MSA may still contain provisions that cross that line.
The DSO says I am in breach and is threatening to replace me as practice owner. What do I do?
Act immediately. Do not respond to the DSO’s communications without counsel. Gather your MSA and all supporting documents. The pending Art Center Holdings decision, combined with SB 351, may make the replacement provision void or unenforceable. An attorney can seek emergency injunctive relief to halt the replacement while the dispute is resolved.
If the DSO is found to have violated the corporate practice doctrine, am I personally at risk with the Dental Board?
Potentially. Dental Board disciplinary proceedings are separate from civil litigation. Even if the DSO violated the law, your license may still be examined if a complaint is filed. Business litigation counsel who understands both the commercial dispute and the regulatory exposure can help you manage both tracks simultaneously.
Can the DSO sue me for leaving the agreement?
Yes, and many do. DSO agreements typically include liquidated damages clauses, clawback provisions, or claims for breach of contract when a dentist exits. However, if the DSO itself materially breached the MSA or if the agreement contains provisions that are void under California law, those claims may be defeated on the merits. Your best position is to act with counsel rather than unilaterally walking away.
Protect Your Practice and Your License
A DSO deal that goes sideways does not resolve itself. The longer clinical control disputes, contract breaches, and equity disagreements go unaddressed, the deeper the harm to your practice, your revenue, and your professional reputation. California’s evolving regulatory environment, including SB 351 and the pending Art Center Holdings decision, is reshaping how these disputes are decided, and dentists who move quickly have more leverage than those who wait.
At the Law Offices of Parag L. Amin, P.C., we represent California dental practice owners in business litigation and dental practice disputes. We understand the structure of DSO deals, the regulatory risks that come with them, and the litigation strategies that protect dentists when those deals fall apart. We also work with medical practice owners navigating similar MSO disputes. If you are in a DSO dispute or evaluating an agreement before signing, contact us for a confidential consultation. This is exactly the kind of situation where early legal guidance protects your practice, your livelihood, and your legacy.