Guide · Healthcare · Dental Practice Ownership

Who Can Own a Dental Practice in Illinois? DSO and MSO Structures Under the Dental Practice Act

Illinois allows meaningful nonclinical administrative support without transferring the practice of dentistry. The legal work is in entity ownership, clinical control, management economics, and the rights spread across the transaction documents.

By Lincoln Square Law · 8-minute read

Start with the entity that practices dentistry

Illinois regulates ownership by separating the clinical practice from nonclinical business services. Section 44 of the Illinois Dental Practice Act generally prohibits a corporation from practicing dentistry, holding itself out as entitled to practice dentistry, furnishing dentists or dental advice for compensation, or owning a dental office, subject to listed exceptions. The exceptions include professional entities and arrangements the statute permits. The first task in a transaction is therefore to identify which entity will hold the dental license-dependent business and which people or entities own and control it.

For a professional limited liability company, the rule is unusually direct: a PLLC may practice dentistry only if all members and managers are licensed dentists under the Dental Practice Act (805 ILCS 185/13(a)(1)). A professional service corporation likewise has licensing and ownership requirements. Entity names, Secretary of State filings, IDFPR registration, shareholder or operating agreements, and employment relationships should tell the same story. A deal is fragile if the documents say the dentist controls the clinical entity while side agreements give someone else the practical power to direct it.

The Act expressly recognizes nonclinical management companies

Illinois law does not require a dental practice to perform every administrative function itself. Section 44 allows a dental management service organization to provide nonclinical business services that do not violate the Act. That statutory lane is important. It allows a DSO or MSO to provide real estate, equipment, revenue-cycle, accounting, marketing, HR support, technology, procurement, and other business infrastructure without becoming the provider of dentistry.

The distinction is functional, not just linguistic. Calling an agreement a management services agreement does not answer whether the management company is actually controlling clinical judgment or presenting itself as the dental practice. Review the rights created by the entire contract set: management agreement, lease, equipment agreement, intellectual-property license, financing documents, equity-transfer restrictions, bank-control provisions, and any succession or nominee arrangement. The cumulative effect matters more than the title on one document.

Reserve clinical decisions to licensed dentists

A compliant structure should make clinical authority unmistakable. Diagnosis, treatment planning, selection of clinical materials based on patient care, supervision of clinical personnel to the extent required by professional law, clinical scheduling decisions that depend on patient need, record content, referrals, and other professional judgments should remain with the dentist or clinical entity. Business metrics can inform staffing and capacity, but a management company should not be able to override a licensed professional’s patient-care judgment to protect a revenue target.

This allocation belongs in the contracts and in operations. If the written agreement says the dentist controls treatment but the DSO’s employee evaluates dentists on procedure mix and can discipline them for declining treatment, the operational evidence points in another direction. The practice should be able to explain who makes a disputed clinical decision and show that the licensed professional has the final word.

Employment and contracting must match the ownership model

Identify who employs or contracts with the dentists, hygienists, and other licensed clinical professionals. The answer should be consistent with the statutes governing the professional entity and the Dental Practice Act. Nonclinical staff can often sit with a management company, but clinical relationships require closer review because an entity that is not authorized to practice dentistry should not accomplish indirectly what it cannot do directly.

Pay attention to professional liability coverage, credentialing, billing enrollment, payroll, restrictive covenants, record custody, and termination rights. A dentist who is employed by the clinical entity but can be removed from all patient access by a management company without a defined clinical-entity decision process may expose the mismatch. The same issue arises when the management company controls the practice’s bank account so completely that the dentist cannot meet clinical or regulatory obligations without approval from a non-licensee.

Management fees need a legal and economic explanation

Section 23 of the Dental Practice Act includes disciplinary provisions addressing division or sharing of professional fees in prohibited circumstances. A management fee should therefore be reviewed for more than tax or valuation efficiency. Ask what services the fee buys, how the amount is calculated, whether the formula changes incentives around patient care, and whether the arrangement can be defended as compensation for real nonclinical services rather than a purchase of the professional fee stream.

A fixed fee is not automatically lawful and a percentage fee is not automatically unlawful. The statutes and facts control. But formulas that give a nonclinical company the economics of ownership while the dentist retains only nominal equity deserve careful scrutiny. Document the services, valuation assumptions, pass-through expenses, reconciliation process, and the parties’ ability to adjust terms if a regulator or law change makes the formula problematic.

Control rights are where investor documents become clinical documents

Transactions often place important rights outside the management agreement. A lender may have covenants. An investor may have approval rights over budgets. A landlord may control premises. A brand owner may set standards.

Those rights are ordinary in commercial deals until they reach the point of controlling the practice of dentistry. Build a reserved-powers schedule that identifies decisions only the licensed clinical owner may make and decisions the management company may make as a business provider.

Budget approval is a good example. A DSO can prepare a budget and manage nonclinical expenses, but a contract that lets it refuse legally necessary clinical equipment, staffing, infection-control spending, or record access creates a different risk. Draft dispute and emergency provisions so the clinical entity can meet professional and legal duties even when the parties disagree about cost.

Plan ownership changes before they are urgent

The structure must survive death, disability, retirement, license discipline, divorce, and a sale. Ownership agreements should address what happens if an owner can no longer satisfy licensure requirements, how shares or membership interests are transferred, how a permitted successor is identified, and what happens to management rights during the transition. Do not wait until a dentist’s estate, a buyer, and a DSO are negotiating against a deadline.

The closing checklist should coordinate corporate records, IDFPR and Secretary of State requirements, payer enrollment, controlled-substance registrations where relevant, malpractice coverage, records custody, patient communications, workforce notices, leases, vendor consents, and HIPAA obligations. Each item has a different legal source. The ownership rule is only one part of the transition.

A diligence sequence for dentists, DSOs, and buyers

Begin with a cap table and entity chart. Confirm every owner and manager of a dental PLLC is a licensed dentist where the statute requires it. Then read the governing documents and contracts for reserved powers, transfer restrictions, voting, removal, bank control, and succession. Next map every service the management company performs and every fee or reimbursement it receives. Then test the operational reality by interviewing the people who actually approve hiring, schedules, clinical supplies, patient complaints, and treatment policies.

Finally, identify the provisions that would be hardest to unwind after closing. Long leases, IP licenses, equipment financings, cross-defaults, security interests, and equity-transfer mechanisms can make a theoretically independent clinical entity economically captive. The transaction documents should preserve a lawful way to continue patient care if the management relationship ends. That is not merely a termination clause. It is continuity planning for a regulated professional practice.

What the ownership rule does not decide

The Dental Practice Act does not answer every DSO question. A transaction may also implicate professional entity statutes, employment law, restrictive-covenant rules, antitrust law, HIPAA, consumer protection, payer contracts, tax, financing, and federal health care fraud-and-abuse rules depending on the services and payers involved. This article addresses Illinois ownership and control as the starting point, not as a substitute for transaction-specific review.

That distinction is useful in negotiations. When someone says a provision is 'required by corporate practice law,' ask for the rule and identify what it actually requires. Some terms are legal requirements. Others are business preferences designed to protect an investment. The parties can negotiate more intelligently when those categories are not blended together.