Fair Market Value in Physician Employment: What Stark Law Requires and What It Means for Your Pay

Why "fair market value" keeps appearing in your employment paperwork

If you have reviewed a hospital employment contract, you have probably noticed language requiring that your compensation reflect "fair market value." You may also have encountered a recruiter explaining that the offer is "benchmarked to MGMA" or that the system's policy caps physician pay at the 75th percentile of survey data. This is not arbitrary corporate policy — it flows from a federal statute that governs how health systems can structure financial arrangements with physicians who refer patients to them.

Understanding the rule does not require becoming a healthcare attorney, but it does require recognizing that physician compensation at a hospital-affiliated employer is shaped by regulatory constraints that simply do not exist at a fully independent private practice. Those constraints limit what you can be offered, explain why certain requests may be declined, and determine how your employer justifies the pay structure in an audit.

What the Stark Law says

The Physician Self-Referral Law — commonly called the Stark Law after its original sponsor — generally prohibits a physician from referring patients to an entity for certain designated health services (DHS) if the physician has a financial relationship with that entity, unless a specific exception applies. Designated health services include clinical laboratory services, physical therapy, outpatient prescription drugs, radiology and imaging, and hospital inpatient and outpatient services, among others.

Because a physician employed by a hospital obviously has a financial relationship with that hospital, virtually every hospital-physician employment arrangement must fit within a Stark Law exception to be lawful. The most commonly used exception for direct employment is the bona fide employment exception (codified at 42 C.F.R. § 411.357(c)).

To satisfy the bona fide employment exception, several conditions must be met:

• The physician must be a bona fide employee under the IRS standard.
• The employment arrangement must be for identifiable services.
• Remuneration paid by the employer must be consistent with fair market value for the services provided.
• Remuneration must not be determined in a manner that takes into account the volume or value of referrals by the physician to the employer.
• The arrangement must be commercially reasonable independent of any referral relationship.

Those last three requirements are the ones with direct implications for how much you can be paid and how your pay formula can be structured.

How "fair market value" is actually determined

CMS, which administers the Stark Law, defines fair market value for physician services as the compensation that would be paid for the services at the time the parties enter into the arrangement as a result of bona fide bargaining between well-informed parties that are not otherwise in a position to generate business for each other. In plain language: what would a willing employer pay a willing physician if neither party could benefit financially from the referral relationship?

Because there is no market where physicians and hospitals negotiate at arm's length without any referral considerations, determining FMV in practice relies on indirect evidence — chiefly, compensation surveys published by organizations that aggregate data from large numbers of physician practices and health systems. The surveys most commonly cited in FMV analyses are:

• MGMA (Medical Group Management Association) — widely used; large sample across specialties and practice types
• AMGA (American Medical Group Association) — often cited alongside MGMA; skews toward multispecialty groups
• SullivanCotter — frequently referenced in academic medical centers and integrated health systems
• Gallagher Physician Compensation Survey — commonly used to corroborate other sources

Survey data is reported in percentiles. A physician whose compensation equals the 50th percentile for their specialty earns at the median; the 75th percentile is higher than 75 percent of reported values for that specialty and practice setting.

No single survey percentile is legally defined as "the" fair market value. The surveys provide a reference range, and the employer's compliance team — often with support from a healthcare valuation firm — documents the rationale for the pay level chosen. Pay that is materially higher than what the surveys reflect requires additional justification, such as documented extraordinary productivity, specialty scarcity in the local market, or specialized clinical skills. The higher the pay relative to the survey range, the stronger the documentation needs to be.

CMS has explicitly stated that compensation above the 90th percentile is not automatically impermissible. However, the practical reality is that above-90th-percentile pay attracts scrutiny — both internally from health system compliance departments and externally in enforcement actions — which is why many systems adopt internal policies capping physician compensation at the 75th or 90th percentile as a risk-management measure. That ceiling is their policy choice, not a statutory number.

Commercial reasonableness: the separate test most physicians overlook

Fair market value addresses the dollar amount of compensation. Commercial reasonableness is an entirely separate requirement that asks a different question: would this employment arrangement make business sense even if the physician never referred a single patient to the employer?

CMS added a regulatory definition of commercial reasonableness in the 2021 Stark Law final rule. An arrangement is commercially reasonable if it furthers a legitimate business purpose and is sensible given the parties' circumstances — independent of the referral relationship. The question is whether the deal makes sense on its own terms, not whether the price is right.

In practice, this matters most in situations where a physician generates significant losses for the employer. A hospital may need to subsidize a primary care physician who attracts patients and generates downstream revenue from referrals to specialists. If the physician is fully allocated to the employer's facilities, the arrangement may be commercially reasonable even with operating losses, because the physician's clinical presence supports the system's overall mission. But a hypothetical arrangement where a physician does minimal clinical work for a large salary, justified solely by the referrals they send, would struggle to meet this test.

Both tests — FMV and commercial reasonableness — must independently be satisfied. Passing one does not guarantee passing the other.

The volume-or-value prohibition and what it means for your pay formula

The third constraint is perhaps the most consequential for how physician compensation is structured. The Stark Law requires that compensation not be determined in a manner that takes into account the volume or value of referrals by the physician to the employing entity.

This does not mean a physician cannot be paid based on productivity — wRVU-based pay formulas are specifically permitted and widely used. Work RVUs measure the physician's own clinical output and are therefore tied to personal effort, not to which facilities a physician's patients use afterward.

What the volume-or-value prohibition does restrict is pay structures that would effectively track how much business a physician sends to a specific entity. A bonus calculated as a percentage of hospital revenue attributable to a physician's referrals, for example, would be a direct violation. More subtly, a formula that pays more per wRVU when a physician's patients generate higher facility revenue could also draw scrutiny, even if the mechanism is indirect.

For most hospital-employed primary care physicians and specialists whose referrals are straightforward — an internist who refers to the hospital's cardiology group, or a surgeon who operates at the hospital — the wRVU model neatly avoids this problem. Your $/wRVU rate reflects your personal patient-care work, and the fact that your patients subsequently use the hospital's labs, imaging, or specialist services does not directly affect your paycheck formula.

What this means at the negotiating table

Most physicians encounter FMV constraints at one of three moments: when they receive their initial offer, when they push for a higher rate than the employer is willing to match, or when a very high volume year generates earnings that bump up against an employer-set ceiling.

A few practical points to keep in mind:

• Survey benchmarks are not the ceiling. They are the most common method for documenting FMV. If your specialty is genuinely scarce in your market, if your hours are substantially above average, or if your mix of services places you in a high-productivity tier, that context can support compensation that exceeds simple percentile matching — as long as it is documented.
• The percentile your employer cites depends on which survey they use. MGMA, AMGA, and SullivanCotter do not always agree, and the same specialty can fall at different percentile levels across the surveys. Employers with access to multiple surveys sometimes use the one most favorable to their offered rate; others average across surveys. It is reasonable to ask which survey your offer is benchmarked against.
• Productivity thresholds interact with FMV. A $/wRVU rate combined with a threshold set at the median wRVU for your specialty produces a compensation structure that tracks survey data. If you are a genuinely high producer, negotiating a higher threshold — so that a greater share of your wRVUs fall in the bonus tier — may be more achievable than negotiating a higher base rate, depending on how your employer's compliance team evaluates the resulting total compensation.
• The compliance constraint is your employer's problem, not yours. Health systems manage Stark compliance for the institution; it is not the physician's legal obligation to police their own compensation. But understanding the framework helps you negotiate intelligently — and it explains why certain requests will be declined even when they seem commercially sensible to you.