Health care businesses of all types increasingly rely on medical directors, yet many misunderstand what the role actually involves and the legal responsibilities that come with it. Physicians are frequently asked to serve as “medical directors,” and practices usually understand they need one without fully recognizing what the role requires. Without clear expectations and structure, both sides can unintentionally create compliance risks that may lead to significant legal and financial consequences.
This 7-part field guide clarifies what a medical director is (and is not), the typical responsibilities associated with the role, and why the specific “hat” a physician wears determines the legal issues that follow:
- Part 1 – What Is a Medical Director?
- Part 2 – What Is the Original Role of a Medical Director?
- Part 3 – Is a Medical Director the Owner of a Medical Practice?
- Part 4 – What Are the Supervision and Delegation Considerations for Medical Directors?
- Part 5 – What Are Other Common Roles for Medical Directors?
- Part 6 – What Are Absentee Physicians?
- Part 7 – Legal Takeaways for Medical Directors
In Part Three, we address one of the most misunderstood scenarios: when the medical director is actually being asked to serve as the owner of a medical entity.
Why Are Medical Directors Asked to Be Owners?
In many states, the Corporate Practice of Medicine (“CPOM”) doctrine restricts non-physicians from owning or controlling a medical practice or influencing clinical decision-making. While CPOM laws vary by state, they generally focus on ensuring a physician controls the delivery of medical care.
In practice, CPOM is triggered when a business model involves services that meet the state’s definition of the practice of medicine. This commonly includes settings such as:
- Medical spas and aesthetic practices
- Weight loss and metabolic wellness programs
- IV hydration and wellness clinics
- Other elective or non-invasive health care services
Because many states define the practice of medicine broadly, CPOM is typically in effect even when services seem low risk, non-invasive, or consumer-oriented. As a result, non-physicians are frequently told they “need a medical director” for their practice, when they actually need a physician-owned medical entity to lawfully deliver medical services. This is where the Management Services Organization (“MSO”) model is most commonly used.
How Does the MSO Model Support Physician-Owned Medical Practices?
An MSO is a non-clinical business entity that provides administrative and operational support to a medical practice. These services typically include staffing and human resources, billing and revenue cycle support, marketing and branding, real estate and facilities management, and information technology and administrative infrastructure.
The legal boundary between the MSO and the medical practice is critical. While the MSO may provide broad operational and administrative support, all clinical authority must remain with a physician-owned medical entity, often referred to as a “Friendly PC”. Crossing that line can trigger CPOM concerns and create regulatory exposure for both the MSO and the physician. A properly structured MSO:
- Does not practice medicine
- Does not make clinical decisions
- Does not control patient care
- Does not interfere with the physician’s medical judgment
The Role of the Friendly PC in MSO Structures
While the MSO is responsible for non‑clinical operations, it cannot exist in a vacuum. Every MSO arrangement depends on a physician‑owned medical entity to lawfully deliver medical services. That relationship, between the MSO and the physician‑owned medical entity, often referred to as a Friendly PC, is governed by a Management Services Agreement (“MSA”).
The MSA plays a central role in defining the structure and is often the first document regulators examine when evaluating CPOM compliance. At a minimum, the MSA typically:
- Defines the non‑clinical services the MSO is permitted to provide
- Allocates responsibilities between the MSO and the medical entity
- Establishes how the MSO is compensated
How the MSO is compensated is a frequent source of regulatory scrutiny. Arrangements that tie MSO compensation directly to medical revenue or profits can raise compliance red flags, including potential fee‑splitting issues, depending on the state. These limitations on the MSO inevitably shift responsibility to the physician‑owned medical entity. That shift matters because it defines what the physician is actually being asked to do in an ownership role.
What Responsibilities Does a Physician Owner Have?
Under the MSO model, the physician’s role goes beyond oversight or consultation and involves ownership of a medical entity delivering care to patients. The label “friendly physician” is often used in this arrangement, but it can create a false sense of security.
Even if the physician is not involved in day-to-day operations or is not actively involved in treating patients, regulators typically still expect the physician-owner to maintain meaningful clinical authority and oversight, particularly if there are no other physicians contracted to take on those responsibilities.
That responsibility often includes oversight of:
- Clinical protocols and treatment standards
- Delegation and supervision of non-physician providers
- Medical decision-making authority
- Separation between business operations and patient care
A compliant structure on paper does not protect a physician if real-world operations tell a different story.
This becomes especially important when comparing ownership roles to purely contractual arrangements.
Understanding the Risks of Entity Ownership
Physicians sometimes assume that ownership roles are inherently riskier than contractual medical director arrangements. In reality, risk depends on how the role is structured and how it functions in real-world operations.
Ownership risk most often arises when the physician’s role is disconnected from actual control or oversight, including situations where:
- The physician is an owner in name only
- Non-physicians effectively control clinical decisions
- Business pressure influences patient care
- The MSO operates outside the limits of the MSA
Even a well‑drafted MSO structure can fail if day‑to‑day operations do not respect the agreed‑upon boundaries. Regulators tend to focus on substance over form, and gaps between the paper structure and actual conduct can quickly undermine an otherwise compliant model.
Risks of Co-Ownership with Other Providers
Ownership risk becomes more complex when multiple licensed providers are involved. Some states permit co‑ownership between physicians and certain other licensed professionals, while others impose strict limitations on ownership percentages, voting rights, or control, or prohibit co‑ownership altogether. States such as California and Texas are often cited as examples where ownership rules are highly specific and driven by state law.
Key considerations in co‑ownership arrangements include:
- Whether a particular license type is permitted to hold ownership
- Required ownership percentages or voting control
- Restrictions on management or control rights
- State‑specific enforcement priorities
Because CPOM and ownership rules vary widely by state, co‑ownership arrangements require careful analysis before a physician agrees to step into an ownership role. What may be permissible in one jurisdiction can create meaningful risk in another.
What to Know About Medical Director Ownership
Clarify the Role Before You Agree
“Medical director” can describe very different roles. Confirm whether you are being asked to serve as an owner, supervisor, collaborator, or advisor.
CPOM Determines Ownership and Clinical Authority
If services qualify as the practice of medicine, CPOM laws often dictate ownership and control requirements.
The MSO Model Requires Real Separation
MSOs may support operations, but clinical authority must remain with the physician-owned entity in both documents and daily practice.
Ownership Carries Responsibility
Being a “friendly” owner does not eliminate accountability. Physician owners must maintain meaningful clinical control and oversight.
State-Specific Rules Always Matter
Ownership and co-ownership rules vary by state and should never be assumed.
ByrdAdatto Can Help You Navigate Medical Director Ownership
Medical director roles that include ownership can create meaningful opportunities, but only when they are structured and operated within a compliant legal framework. CPOM issues and MSO misalignment are often overlooked until regulators raise concerns, at which point corrective action can be costly, disruptive, and difficult to unwind.
Our legal team helps physicians evaluate medical director roles, assess ownership and MSO risk, and design compliant structures that align agreements with real‑world operations. Contact ByrdAdatto for guidance on medical director ownership arrangements that protect your license, support your business, and reduce long‑term risk.
In Part Four, we discuss supervision and delegation requirements for medical directors.
