A hospital or medical group can pay an employed physician a salary without running afoul of the Medicare referral ban if the arrangement satisfies the Stark Law bona fide employment exception at 42 CFR 411.357(c). Four elements have to line up: a real employer-employee relationship for identifiable services, compensation at fair market value, pay that is not determined by the volume or value of the physician’s referrals, and a deal that would be commercially reasonable even if no referrals ever changed hands. Miss any one of them and every Medicare claim generated during the noncompliant period becomes a prohibited claim, exposed to civil penalties that now exceed $31,000 per service.
Why This Exception Exists
The Physician Self-Referral Law at 42 U.S.C. § 1395nn bars a physician from referring Medicare patients for designated health services to any entity the physician (or an immediate family member) has a financial relationship with, unless a specific exception applies.1Office of the Law Revision Counsel. 42 USC 1395nn – Limitation on Certain Physician Referrals The entity is also barred from billing Medicare for those services.
Because inpatient and outpatient hospital services are themselves designated health services, nearly every clinical bill a hospital submits is a referral claim under Stark.2Centers for Medicare & Medicaid Services. Physician Self-Referral That is why hospital-physician employment relationships almost always need to sit inside the bona fide employment exception. It is the workhorse Stark exception for the modern employed-physician model.
Genuine Employment Under the IRS Common Law Test
The first requirement is that the physician actually be an employee. The regulations at 42 CFR 411.351 define “employee” by reference to the IRS common law rules under Internal Revenue Code section 3121(d)(2).3eCFR. 42 CFR Part 411 Subpart J – Financial Relationships Between Physicians and Entities The employer must control when, where, and how the physician works.
A W-2 is the clearest proof. A physician receiving a 1099 as an independent contractor does not qualify for this exception, no matter how tightly drafted the contract. Independent contractor relationships have to be routed through a different Stark exception, most commonly the personal services arrangement at 42 CFR 411.357(d), which brings its own written-agreement and signature requirements.
Practical indicators of genuine employment include: the organization sets the schedule, provides office space and support staff, and offers the physician standard employee benefits like health insurance and retirement contributions. The more control the employer exercises over working conditions, the stronger the case under the IRS standard.
Identifiable Services
The exception requires that the employment be “for identifiable services.”4eCFR. 42 CFR 411.357 – Exceptions to the Referral Prohibition Related to Compensation Arrangements The physician must be doing actual clinical or administrative work that justifies the salary. A vague job description or missing time records invites the conclusion that the money is buying referrals rather than paying for labor.
This is where transitions cause problems. A physician who is winding down a practice, on extended leave, or approaching retirement but still drawing a full salary is a red flag. If the employer keeps paying after the physician has stopped providing services, the arrangement fails this test. Document the hours worked, the patients seen, and the specific duties performed. That paper trail is the primary defense when auditors ask what the organization is paying for.
Fair Market Value
Compensation has to be consistent with the fair market value of the services the physician actually performs.4eCFR. 42 CFR 411.357 – Exceptions to the Referral Prohibition Related to Compensation Arrangements The regulation at 42 CFR 411.351 defines fair market value as the price reached in an arm’s-length transaction consistent with the general market value of the subject transaction. What would an unrelated employer pay an unrelated physician for the same work in the same market?
Answering that requires objective benchmarking. National salary surveys from organizations like MGMA and SullivanCotter break compensation down by specialty, region, and practice setting. Pay near the median (50th percentile) is generally low risk. Pay at the 75th or 90th percentile is not automatically a violation, but it needs a documented reason for that individual physician: years of experience, subspecialty expertise, call coverage burden, or genuine recruiting difficulty in the market.
Trouble usually comes from patterns. A hospital that pays every recruited cardiologist at the 90th percentile without articulating a reason for each individual is building a record regulators will notice. Justifications need to be specific, refreshed with current survey data, and revisited periodically rather than left frozen at whatever number the parties agreed to years ago.
What Fair Market Value Leaves Out
Fair market value reflects the worth of the physician’s personal labor and expertise. It does not include the downstream revenue the physician generates through referrals for ancillary services, surgeries, or hospital admissions. An employer that sets a cardiologist’s salary by projecting profit from the catheterizations, imaging, and hospital stays that cardiologist will drive has already contaminated the analysis. Preventing that calculation is the whole point of the statute.
No Pay Tied to Volume or Value of Referrals
Even compensation that sits inside the fair market value range cannot be structured to reward the physician for referring more. The regulation says pay must not be “determined in any manner that takes into account the volume or value of referrals by the referring physician.”4eCFR. 42 CFR 411.357 – Exceptions to the Referral Prohibition Related to Compensation Arrangements A hospital cannot raise a physician’s salary because that physician sends more patients for lab work or imaging at the facility.
There is a specific carve-out for productivity bonuses tied to services the physician personally performs.5eCFR. 42 CFR 411.357 – Exceptions to the Referral Prohibition Related to Compensation Arrangements A physician who personally sees more patients, performs more procedures, or works more hours can earn more for that additional effort. The line is between rewarding the physician’s own hands-on work and rewarding the revenue stream that follows from the physician’s orders.
Productivity Bonuses and wRVUs
Work Relative Value Units (wRVUs) are the standard measure. Each service carries an RVU weight reflecting time, skill, and intensity. Paying a set dollar amount per wRVU generated through personally performed services is the most widely accepted bonus structure under this exception.
The pitfall is crediting a physician with work done by someone else. If a nurse practitioner or physician assistant performs a service under the physician’s supervision, those wRVUs generally cannot count toward the physician’s productivity bonus under this exception. Only tasks the physician personally completes qualify. Blended formulas that mix the physician’s own output with the output of supervised staff drift toward rewarding referral-driven volume.
Regulators read the actual math, not the labels. Calling something a “quality bonus” or “efficiency incentive” does not immunize it if the underlying formula correlates with referral patterns. Any multiplier that pushes pay up when the physician generates more downstream business for the employer is a problem, whatever the contract calls it.
Commercial Reasonableness
The last element requires that the arrangement “would be commercially reasonable even if no referrals were made to the employer.”4eCFR. 42 CFR 411.357 – Exceptions to the Referral Prohibition Related to Compensation Arrangements Strip out every dollar of referral revenue and ask whether the deal still makes sense.
Hiring a surgeon in a rural community with no surgical coverage is an easy case. The organization needs the capability, patients need the access, and the salary is justified by the clinical gap. Adding a fifth gastroenterologist when the existing four are underutilized is harder to defend. The more the business case rests on capturing referral volume rather than filling a real service need, the weaker the argument.
Documentation should tie the position to specific operational needs: community health assessments showing a shortage, emergency department call coverage requirements, patient wait times running past acceptable thresholds, or payer contracts that require certain specialty availability. Build the record that the position exists because patients need it.
Written Agreements and the Signature Grace Period
The bona fide employment exception does not explicitly require a written agreement, but operating without one is reckless. A written contract is the single best way to demonstrate that every element has been met. Without one, you are asking auditors to take your word.
When a written arrangement exists but signatures were missed, the regulations allow a limited fix. If the missing signature was an inadvertent oversight, the parties have 90 consecutive calendar days from the date of noncompliance to sign. If the omission was not inadvertent, the window is 30 days. This fix is available only once every three years for the same physician-entity relationship, and the arrangement has to satisfy every other element of the applicable exception during the gap. CMS has confirmed that electronic signatures work, so long as the system reliably captures and retains the signature with a verifiable timestamp.
What a Failed Exception Costs
Stark is a strict liability statute. Intent does not matter. If the arrangement fails to meet every element, every Medicare claim generated during the noncompliant period is a prohibited claim.
The current inflation-adjusted civil monetary penalty is $31,670 per service billed in violation of the referral prohibition. For circumvention schemes, where a physician or entity knowingly structures an arrangement to get around the law, the penalty rises to $211,146 per arrangement.6Federal Register. Annual Civil Monetary Penalties Inflation Adjustment The entity also has to refund every amount collected for the prohibited referrals.1Office of the Law Revision Counsel. 42 USC 1395nn – Limitation on Certain Physician Referrals
A claim submitted in violation of Stark can also be treated as a false claim under 31 U.S.C. § 3729. The False Claims Act imposes damages equal to three times the government’s loss plus an inflation-adjusted per-claim penalty.7Office of the Law Revision Counsel. 31 USC 3729 – False Claims Because every individual service billed to Medicare counts as a separate claim, exposure builds fast. A physician employment arrangement noncompliant for a few months can generate hundreds or thousands of tainted claims.8Office of Inspector General. Fraud and Abuse Laws
The statute also authorizes exclusion from Medicare and other federal healthcare programs, incorporating the procedural framework of the Civil Monetary Penalties Law at 42 U.S.C. § 1320a-7a.1Office of the Law Revision Counsel. 42 USC 1395nn – Limitation on Certain Physician Referrals For a hospital or practice, exclusion is effectively the end of the business.
If You Find a Problem, the Clock Starts
An organization that identifies a potential Stark violation is on an immediate clock. Under 42 U.S.C. § 1320a-7k(d), a provider that has received an overpayment must report and return it within 60 days of identification. Missing that window can convert the overpayment itself into a false claim. In the Stark context, every dollar collected under a noncompliant arrangement is an overpayment.
CMS operates a Voluntary Self-Referral Disclosure Protocol (SRDP) built specifically for these violations.9Centers for Medicare & Medicaid Services. Self-Referral Disclosure Protocol CMS weighs the seriousness of the violation, how quickly the entity came forward, and how cooperative it was during the review. CMS is not required to offer any reduction. But entities that self-disclose through the SRDP consistently resolve their liability for significantly less than they would owe if the government found the problem first through an audit or a whistleblower complaint.