What is the Corporate Practice of Medicine doctrine?

The Corporate Practice of Medicine (CPOM) doctrine emerged in the early 20th century as a guard against corporate or lay interference with physician judgment. The reasoning: if a non-physician corporation employs physicians, the corporation's profit motive could distort clinical decisions. CPOM was meant to ensure that medical decisions stay with licensed clinicians.

In practice today, CPOM is interpreted differently across states. There is no single federal CPOM law — it's a state-by-state matter of statute, case law, and board guidance.

Strict CPOM states (the doctrine is meaningfully enforced): California, New York, Texas, Illinois, New Jersey, Ohio, Iowa, Kansas, Colorado, Indiana, Oregon, North Carolina.

In these states, non-physicians (including NPs, even with full practice authority) generally cannot directly own a corporation that practices medicine. The workaround is the MSO/PC structure — a physician-owned PC delivers care, and a non-physician-owned MSO handles the business operations under a Management Services Agreement.

Moderate CPOM states (the doctrine exists but with carveouts): Massachusetts, Pennsylvania, Michigan, Connecticut, Georgia, Tennessee, Wisconsin, Louisiana, Alabama, Mississippi, Missouri, South Carolina, Arkansas, Kentucky, Maine.

Permissive states (CPOM is not meaningfully enforced): Florida, Arizona, Nevada, Washington, Oregon (somewhat mixed), Utah, New Mexico, Idaho, Montana, Wyoming, Vermont, New Hampshire, Hawaii, Alaska, Delaware, Maryland, DC, and most others.

Critical nuance for NPs: a state's CPOM strictness and a state's NP practice authority are two different things. They don't always line up.

Maryland is a Full Practice state for NPs (no CPOM problem at all). Iowa is a Full Practice state but does enforce CPOM, so NP-owned aesthetic practices in Iowa typically still use a PC structure with the NP as the licensed owner. California is Restricted Practice and strict CPOM — both constraints layer.

The takeaway: when planning entity structure, verify both your state's NP practice authority (AANP State Practice Environment is the source) AND your state's CPOM enforcement (state medical board guidance and case law are the sources). Then take both to state counsel before filing.

The MSO/PC structure is the proven solution in strict-CPOM states and works equally well for NP-owned and physician-owned aesthetic practices.