The Corporate Practice of Medicine Doctrine and MSO-PC Structures

Introduction

The Corporate Practice of Medicine doctrine is one of the most important structural considerations in healthcare M&A, particularly in physician practice management and PE-backed healthcare services transactions. CPOM rules exist in approximately 30+ states and prohibit non-physician entities from practicing medicine, which in practical terms means non-physician entities cannot directly employ physicians, own medical practices, or exercise control over clinical decision-making. For PE firms and corporations that want to invest in physician practices, CPOM requires a workaround structure that preserves physician ownership of the clinical entity while transferring the economic value to the non-physician investor.

The standard workaround is the MSO-PC (Management Services Organization / Professional Corporation) model, a two-entity structure that separates the clinical practice from the management platform.

MSO-PC Structure

A two-entity arrangement used to navigate CPOM restrictions. The Professional Corporation (PC) is owned by a licensed physician and employs all clinical providers. The Management Services Organization (MSO) is owned by the PE firm or corporation and provides all non-clinical services (billing, revenue cycle management, HR, marketing, compliance, IT, facilities, procurement) to the PC under a long-term management services agreement (MSA). The MSO charges a management fee, typically structured as a percentage of the PC's net revenue (85-95%), that transfers substantially all of the practice's economic value to the MSO. The PC retains a small residual to cover physician compensation and direct clinical expenses. From a legal perspective, the PC maintains independent clinical control; from an economic perspective, the MSO controls the financial outcome.

How the Economics Work

The management fee percentage is the central economic term. A higher percentage means more value flows to the MSO (and therefore to the PE investor). The fee must be defensible as reflecting the fair market value of the management services provided; otherwise, the arrangement may be challenged as a de facto violation of CPOM (the management fee is really a disguised payment for the right to control the medical practice) or as a violation of the Anti-Kickback Statute (the management fee is inducing referrals).

CPOM rules vary dramatically by state, creating a complex compliance landscape for multi-state healthcare platforms.

Strict CPOM states (California, New York, Texas, Illinois) prohibit non-physician corporate practice broadly and enforce the prohibition actively. MSO-PC structures are required for any PE investment in physician practices.

Moderate CPOM states enforce CPOM selectively or have exceptions for certain specialties or practice types. Some states allow non-physician ownership of certain practices (optometry, dentistry in some jurisdictions) while prohibiting it for others.

No CPOM states or minimal enforcement states do not restrict corporate ownership of medical practices, allowing PE firms to directly employ physicians and own practices without the MSO-PC workaround.

Acquisition Mechanics

When a PE firm acquires a physician practice platform, it typically acquires the MSO entity (which it can own directly) and enters into a new or amended management services agreement with the PC. The PC's physician owner may receive rollover equity in the MSO as part of the transaction consideration, aligning the physician's interests with the platform's performance.

The management services agreement is the most important document in the transaction because it defines the economic relationship between the MSO and PC. Key terms include the management fee percentage and calculation methodology, the term (typically 20-40 years with automatic renewal), the services covered (comprehensive non-clinical management), the MSO's right to approve operating budgets and capital expenditures, and the termination provisions (typically heavily restricted to protect the MSO's long-term economics).

Management Services Agreement (MSA)

The long-term contract between the MSO and the PC that defines the management services to be provided, the fee structure, the term, and the governance arrangement. The MSA is the legal mechanism that transfers economic value from the PC to the MSO while maintaining the PC's nominal clinical independence. MSAs are typically 20-40 years in duration with automatic renewal provisions and restrictive termination rights, designed to be effectively permanent. The MSA is the primary asset the PE firm acquires (indirectly through the MSO) in a physician practice transaction.

Valuation Implications

The MSO-PC structure creates unique valuation considerations. The buyer is not acquiring the medical practice itself (which it legally cannot own); it is acquiring the MSO and the right to receive management fees from the PC under the MSA. The valuation should therefore reflect the MSA's terms, the stability of the management fee, the enforceability of the contract, and the risk that regulatory changes could restrict or invalidate the MSO-PC arrangement.

The next article covers asset vs. stock deal structures and the healthcare-specific considerations that influence this choice.