In California, dental owners operating through a Management Services Organization (MSO) or Dental Support Organization (DSO) arrangement may face significant legal risks, including fee-splitting violations under Business and Professions Code Section 650, loss of clinical ownership control, and Dental Board scrutiny.
The growth of corporate dental groups and private equity investment in dental practices has made MSO and DSO structures common across California, including in the San Fernando Valley.
For a practicing dentist in Canoga Park or West Hills, the appeal of a management services arrangement can be real: reduced administrative burden, access to group purchasing, and operational support. The legal risks, however, are not always visible in the marketing materials.
What Is an MSO and What Is a DSO?
Both MSOs and DSOs are business structures designed to separate the clinical side of a dental practice from its business operations. Under California law, only a licensed dentist or a professional corporation with licensed dentist shareholders may own a dental practice. Neither an MSO nor a DSO can own the clinical entity.
What these organizations do is own or manage the non-clinical aspects: billing, marketing, human resources, equipment, real estate, and similar functions.
The distinction between an MSO and a DSO is primarily one of scale and structure. An MSO is a standalone management services entity that contracts with one practice or a small group of practices. A DSO operates at greater scale, affiliating with many practices across multiple locations.
Nationally, DSOs support more than 13,000 dental offices and practices across the United States. The legal risks attached to both, however, share common features under California law.
The table below compares the two structures across the most relevant dimensions to California dental owners who may be considering an affiliation.
| Factor | MSO (Management Services Organization) | DSO (Dental Support Organization) |
| Who owns the clinical practice | Licensed dentist retains clinical ownership | Licensed dentist retains clinical ownership |
| Who handles business operations | MSO manages HR, billing, marketing, facilities | DSO manages support functions for affiliated practices |
| Ownership of equipment/real estate | Often held by the MSO entity | Varies; typically held by DSO or affiliates |
| California fee-splitting risk | High if management fee is tied to clinical revenue (Bus. & Prof. Code § 650) | High if support fees are structured as a revenue percentage |
| Common in dental context | Independent practices, group practices, medical-dental hybrids | Multi-location dental chains, private equity-backed groups |
| Key legal document | MSO Services Agreement | Affiliation Agreement or DSO Services Agreement |
Fee-Splitting: The Central Legal Risk in California
California Business and Professions Code Section 650 prohibits licensed dentists from offering, delivering, receiving, or accepting any rebate, refund, commission, preference, or other form of compensation that is contingent on the referral of patients or that constitutes a split of professional fees with a non-licensee. This prohibition applies regardless of the form the payment takes.
The risk in an MSO or DSO arrangement centers on how management fees are calculated. Compensation based on a percentage of collections, production, or other clinical revenue may present significant fee-splitting concerns under California law, particularly if the payment is viewed as sharing professional fees rather than compensating the MSO or DSO for legitimate administrative services.
Whether a particular arrangement complies with Business and Professions Code section 650 depends on its overall structure, the services provided, and the substance of the financial relationship.
Management fees are commonly structured to reflect the fair market value of bona fide administrative services actually provided. Careful drafting and documentation can help reduce fee-splitting risk, although compliance depends on the overall facts and circumstances of the arrangement rather than any single contract provision.
Ownership Control and Clinical Independence
A second category of legal risk involves ownership control. California law requires that ownership and control of a dental practice remain with licensed dentists, subject to limited statutory exceptions applicable to professional corporations.
An MSO or DSO that acquires equity rights, voting authority, or contractual rights that effectively allow it to control the professional entity or interfere with clinical judgment may raise concerns under California’s professional corporation laws and the state’s restrictions on the corporate practice of dentistry.
Contract provisions that require the dentist-owner to obtain approval from the MSO or DSO for clinical hiring decisions, treatment protocols, or facility changes may, depending on how they are drafted, effectively transfer control of the practice in ways that implicate California’s professional corporation statutes. Dentists who sign affiliation agreements without a thorough legal review may not fully appreciate how much operational authority they are relinquishing.
Exit provisions are another area of risk. Some affiliation agreements include non-compete clauses, buy-back provisions, or restrictive covenants that purport to limit a dentist’s ability to practice after leaving the arrangement.
California prohibits post-employment non-compete agreements under Business and Professions Code section 16600, and recent legislation has reinforced the state’s strong public policy against such restrictions.
At the same time, California law recognizes limited statutory exceptions in certain business sale and ownership transfer contexts. Whether a particular restrictive covenant is enforceable depends on the specific facts, the structure of the transaction, and the applicable statutory exceptions.
What Legal Risks Does an MSO or DSO Arrangement Create for California Dental Owners?
The legal risks in MSO and DSO arrangements are real and specific to California regulatory law. A dental owner considering an affiliation, or one already in an arrangement who has questions about compliance, may benefit from a consultation with an MSO and DSO attorney in Los Angeles who is familiar with both the Dental Practice Act and California’s professional corporation requirements.
At minimum, any MSO or DSO services agreement should be reviewed for fee structure compliance with Business and Professions Code Section 650, governance provisions confirming the dentist retains clinical control, exit and buyout terms, and any restrictive covenants. These are not minor contract details. They define the terms of the dentist’s ownership of their own practice.
Dental professionals in Canoga Park, West Hills, and throughout the San Fernando Valley who operate through or are evaluating MSO or DSO arrangements should seek legal review before signing or renewing any affiliation agreement.
Frequently Asked Questions
What is the difference between an MSO and a DSO in California?
A Management Services Organization (MSO) provides administrative and business support services to a licensed dental practice under a services agreement, while a Dental Support Organization (DSO) typically affiliates with multiple dental practices and provides similar support at scale. In both models, California law requires that clinical ownership remain with a licensed dentist.
Is fee-splitting illegal in California dental practices?
Yes. California Business and Professions Code Section 650 prohibits dentists from offering or receiving compensation that is contingent on the referral of patients or that constitutes a fee split with a non-licensee. MSO and DSO management fee structures must be carefully drafted to avoid violating this prohibition.
Can a non-dentist own a dental practice in California?
No. Under California law, a dental practice must be owned by a licensed dentist or a professional corporation whose shareholders are all licensed dentists, as required by California Corporations Code Section 13401. Non-dentists cannot own or control the clinical operations of a California dental practice.
What legal risks does a DSO affiliation create for a California dentist?
A California dentist affiliated with a DSO may face risks including loss of clinical independence if contract terms cede decision-making authority, fee-splitting violations if the affiliation fee structure violates Business and Professions Code Section 650, and Dental Board scrutiny if the arrangement is perceived as unlicensed practice of dentistry.
What should a California dental owner review before signing an MSO or DSO agreement?
A California dental owner should have an attorney review the management fee structure for fee-splitting compliance, the governance provisions to confirm the dentist retains clinical control, the exit and buyout terms, and any non-compete or restrictive covenant clauses before signing an MSO or DSO affiliation agreement.
Contact The Leiva Law Firm
Entering an MSO or DSO arrangement without a thorough legal review can expose a California dental owner to regulatory, licensing, and financial risks that may be difficult to unwind. Leiva Law Firm assists dental professionals in Los Angeles and the San Fernando Valley with MSO and DSO agreement reviews, compliance assessments, and related business and licensing matters.
You can reach Leiva Law Firm at (818) 519-4465 to schedule a consultation.
Written by: Marlene Leiva, Esq. | The Leiva Law Firm
Last reviewed: June 2026
| LEGAL DISCLAIMER
This article is intended for general informational purposes only and does not constitute legal advice. Reading this content does not create an attorney-client relationship with The Leiva Law Firm or any of its attorneys. Laws and regulations may change; the information provided may not reflect the most current legal developments. Readers should consult a qualified attorney regarding their specific situation. |
