Read this first. This page describes a common transaction structure in general terms so that a physician-owner can follow a conversation with counsel. It is not legal advice, it is not specific to any state, and it does not indicate that any structure is permissible where you practice. Requirements vary by state and change. Informational only; not legal, tax, or investment advice. Every transaction is unique — consult qualified advisors.
The short answer
An MSO structure separates a medical practice into two entities: a professional entity that holds the clinical practice and remains physician-owned, and a management services organization that provides administration, staffing, technology and facilities under a services agreement. The MSO may be owned by non-physicians, which is how institutional capital participates in medical practices where direct ownership is restricted.
Quick answers
What does MSO stand for in an MSO structure? Management services organization — the non-clinical entity that provides operational services to a medical practice under contract.
Who owns the clinical practice in this structure? A licensed physician continues to own the professional entity, which is what distinguishes the structure from a direct acquisition.
Is the owning physician always the selling physician? Not necessarily — the professional entity may be held by a different physician nominated in connection with the transaction.
What is a management services agreement? The contract between the two entities setting out which services the MSO provides and what it is paid for them.
Why can’t the management fee simply be a share of revenue? Many states restrict the sharing of professional fees with non-physicians, which constrains how the fee may be calculated.
Does this structure mean I keep control? Ownership of the clinical entity and practical control of the business are separate questions, and the agreements determine the second one.
Who should explain the structure to me? Your own healthcare counsel, before signing anything — not the buyer’s counsel, whose client is the buyer.
Key takeaways
- An MSO structure divides a practice into a physician-owned professional entity and a non-clinical management entity connected by a services agreement.
- The structure exists because many states restrict non-physician ownership of medical practices, and it is the standard route for institutional capital into the sector.
- Ownership of the clinical entity and practical control of the business are separate questions, and the agreements rather than the share register determine the second.
- The management fee is the term that determines how much of a practice’s earnings leave the clinical entity, and it is constrained by fee-splitting rules in many states.
- A physician-owner presented with this structure should have their own healthcare counsel explain it before signing, because the buyer’s counsel represents the buyer.
Why the MSO structure exists at all
In most industries, a buyer with capital simply buys the company. In medicine, who may own a practice is itself regulated: many states restrict the ownership of medical practices and the employment of physicians by non-physicians, under what is generally called the corporate practice of medicine doctrine. The background is set out in our guide to MSOs, CPOM and DPC statutes.
The MSO structure is the practical response. Rather than acquiring the practice, an investor acquires the business operations and contracts to provide them back to a clinical entity that stays in physician hands.
The important consequence for a seller is this: when a platform buyer proposes something more complicated than “we will buy your practice,” the complication is usually not a negotiating tactic. It is the architecture the sector uses. Understanding it means being able to evaluate what is being proposed rather than agreeing to something opaque.
The two entities in an MSO structure
Professional entity (PC, PA or PLLC) The clinical entity. Employs the physicians, holds the clinical relationships and the medical records, and remains owned by a licensed physician. Sometimes informally called the “friendly PC.” Management services organization (MSO) The non-clinical entity. Provides administration, staffing, billing support, technology, facilities and other operational services. May be owned by non-physicians. Management services agreement (MSA) The contract between them, setting out the services provided, the term, the fee, and what happens if either party wants out.
In a transaction, what an acquirer typically buys is the MSO side — the operational business and its contractual relationship with the clinical entity. The professional entity continues, under physician ownership, but its economics and its operations are now governed by an agreement it did not previously have.
Where the line falls inside an MSO structure
The division is between clinical and non-clinical, and it is meant to be a real division maintained in practice rather than a formality on paper.
| The typical allocation of responsibility. General and illustrative — the precise boundary is a matter of state law and must be drawn by counsel for the relevant state. Usually the professional entity | Usually the MSO | Frequently negotiated |
|---|---|---|
| Clinical decisions and treatment | Billing and collections administration | Scheduling policy and appointment length |
| Physician hiring, credentialing, supervision | Non-clinical staffing and human resources | Membership fee levels and structure |
| Ownership of medical records | Technology, systems and infrastructure | Panel size targets per physician |
| The member or patient relationship | Real estate, equipment, facilities | Clinical protocols and quality programmes |
| Clinical protocols and quality | Marketing, purchasing, finance | Physician compensation structure |
The third column is the one worth studying, and it is the column most summaries of this structure leave out. Scheduling, panel size and fee levels are commercially significant and clinically consequential at the same time, which is exactly why they get negotiated rather than assigned. Where they land differs between transactions, and where they land determines what practising in the arrangement actually feels like.
The line is a matter of state law. Which items may sit on which side, and how firmly, varies by state and depends on how the relevant medical board and courts have interpreted the applicable rules. Nothing in the table above indicates what is permissible where you practice. Your own healthcare counsel draws that line for your state, on your facts.
The management fee in an MSO structure
The MSA specifies what the MSO is paid, and this term does more work than any other in the structure. It determines how much of the practice’s earnings leave the clinical entity and, therefore, what the professional entity retains for physician compensation.
It is also the term most exposed to regulatory scrutiny, because many states prohibit fee-splitting — the sharing of professional fees with non-physicians. That constrains how a management fee may be calculated. A fee expressed as a straightforward percentage of professional revenue can attract challenge in some states, while a fee representing fair market value for services actually provided is generally regarded as more defensible.
Whatever the calculation method, the practical question for a physician-owner is the same and it is arithmetic rather than law: after the management fee, what is left in the professional entity, and what does that mean for what you and your colleagues are paid?
Ownership and control are different questions
This is the part physician-owners most often misunderstand, and it is worth stating plainly.
In an MSO structure, a licensed physician owns the professional entity. That is not the same as controlling the practice. Practical control over the business — its systems, its pricing, its staffing, its growth — is exercised through the management services agreement and the related documents, not through the share register.
Acquirers also commonly put arrangements in place governing what happens to the professional entity’s ownership itself: who may hold the shares, on what terms they may be transferred, and what occurs if the owning physician leaves, retires or dies. These arrangements are widely used and generally disclosed. Their effect is that the clinical entity’s ownership does not float free of the wider structure.
One consequence surprises sellers more than any other. The physician who owns the professional entity after the transaction is not necessarily the physician selling it. Depending on the structure, the shares may be held by another physician nominated in connection with the arrangement. A seller who assumes they will continue to own the clinical entity, and who has not asked, may find that assumption was never part of the deal.
Ask directly, early. Who will own the professional entity after closing, and on what terms may that ownership change? The answer is knowable at the letter of intent stage and it is a fair question to put before any exclusivity is granted. It is also a question for your own counsel to interrogate, not one to settle on a call.
What a physician-owner should ask about an MSO structure
Not to negotiate the structure — that is your counsel’s job — but to understand what is being proposed.
Questions for your own counsel
- Does my state apply corporate practice of medicine restrictions, and how do they bear on this proposal?
- Who owns the professional entity after closing, and what governs any change in that ownership?
- How is the management fee calculated, and is that method sound under this state’s rules?
- After the fee, what remains in the professional entity, and how is physician compensation determined from it?
- Which decisions in the “frequently negotiated” column sit with which entity under these documents?
- What is the term of the management services agreement, and on what grounds can either side terminate?
- If the MSO is later sold, what happens to the professional entity and to these arrangements?
- What am I personally liable for, and for how long after I stop practising here?
- What are the tax consequences for me of this structure, as against a simple asset sale?
The last two are the ones sellers most often reach late. Both are considerably cheaper to answer before a letter of intent than during exclusivity. The position is set out in our guide to the sale process.
Where MSO structures come under pressure
MSO arrangements are established and widely used across healthcare. They are also an area of continuing regulatory and legislative attention, and a physician-owner should understand that the landscape is not static.
Broadly, scrutiny tends to focus on whether the separation is real in operation rather than only in the documents — whether clinical decisions genuinely rest with clinicians, whether the management fee reflects services actually provided, and whether the arrangements around ownership of the professional entity leave meaningful physician control.
For a seller, the practical implication is narrow and worth holding on to: the structure being proposed should be one your own counsel is comfortable with under current rules in your state, documented properly, and operated as documented afterwards. That is a question about this transaction, not about the sector.
What an MSO structure means when you sell
Three things change for a physician-owner in an MSO transaction, relative to a simple sale.
What you sell is not what you thought you were selling. The transaction is typically structured around the business operations rather than the clinical practice as a single entity. This affects how proceeds are characterised and taxed, which is a matter for your own tax counsel and one worth raising early rather than discovering at signing.
You will be operating inside a contract afterwards. If you continue practising post-closing — as most sellers do — the MSA governs your working conditions in ways an employment agreement alone would not. Read it as a description of your working life, not as a corporate schedule.
The documents outlast the people. The individuals who negotiated warmly with you may move on. What remains is what was written down. That is not cynicism; it is the ordinary reason to have your own counsel read every line while there is still time to change it.
Your own counsel, not the buyer’s. A buyer’s counsel is often willing to walk a seller through the structure, and the explanation may be entirely accurate. It is still not advice given on your behalf. Engage healthcare counsel who represents you, before a letter of intent rather than after.
Frequently asked questions
What is an MSO structure in healthcare?
An MSO structure separates a medical practice into two entities: a professional entity holding the clinical practice, which remains physician-owned, and a management services organization providing administration, staffing, technology and facilities under a services agreement. The MSO may be owned by non-physicians.
Why do buyers use an MSO structure instead of buying the practice?
Because many states restrict the ownership of medical practices and the employment of physicians by non-physicians under the corporate practice of medicine doctrine. The MSO structure allows an investor to acquire the business operations while the clinical entity remains in physician hands.
Who owns the professional entity after the transaction?
A licensed physician, though not necessarily the physician who sold the practice. Depending on the structure, the shares may be held by another physician nominated in connection with the arrangement, with terms governing how that ownership may change. It is a fair question to ask before granting exclusivity.
How is the management fee calculated?
It varies, and the method is constrained by state rules. Many states prohibit fee-splitting, which is the sharing of professional fees with non-physicians. A fee expressed as a straightforward percentage of professional revenue can attract challenge in some states, while a fee representing fair market value for services actually provided is generally regarded as more defensible.
Does an MSO structure mean I keep control of my practice?
Ownership of the clinical entity and practical control of the business are separate questions. Control over systems, pricing, staffing and growth is generally exercised through the management services agreement and related documents rather than through the share register.
What decisions are typically negotiated rather than fixed?
Scheduling policy and appointment length, membership fee levels and structure, panel size targets per physician, clinical protocols and quality programmes, and physician compensation structure. These are commercially significant and clinically consequential at once, and where they land determines what practising inside the arrangement feels like.
Should I use my own lawyer or the buyer’s explanation of the structure?
Engage your own healthcare counsel, before a letter of intent. A buyer’s counsel may explain the structure accurately, but they represent the buyer. State-specific questions about permissibility, ownership of the professional entity, the management fee and your personal liability need an adviser acting on your behalf.
Six questions to test any MSO structure
None of this is legal advice, but an owner who can answer these six questions will follow the conversation with counsel far more easily, and will spot an MSO structure that has drifted away from what was originally documented.
- Who owns the clinical entity? In a compliant MSO structure that answer is a licensed physician, and it stays that way after closing.
- How is the management fee calculated? Fair market value, documented, and not a residual sweep of whatever is left.
- Which decisions sit on each side of the line? Clinical judgement, hiring of clinicians and medical records belong to the practice, not to the MSO structure.
- What happens on default? Step-in rights that transfer clinical control are the clause most likely to make an MSO structure look like ownership.
- Does the paperwork match reality? Diligence compares the MSO structure on paper with how the practice is actually run day to day.
- Is the structure portable? An MSO structure built for one state may not survive expansion into another.
Related reading
An MSO structure exists because of state law, and it is priced alongside everything else in a transaction.
- MSOs, CPOM and DPC statutes: the structure beneath the deal
- Who buys concierge medical practices — and what each one wants
- How to sell a concierge medicine practice: the full process
- What is a concierge medical practice worth?
