What Doctor Actions Does the Stark Law Prohibit?

The Stark Law is a federal physician self-referral statute that restricts how you refer Medicare and Medicaid patients for certain services. At its core, it bars you from making referrals for designated health services (DHS) to an entity with which you or an immediate family member has a financial relationship—unless a specific exception applies. These Medicare Referral Restrictions are strict liability rules: intent to violate is not required.

Understanding the scope of prohibited referrals, what counts as a financial relationship, and which exceptions are available is essential to Health Care Fraud Prevention and day‑to‑day compliance. The sections below translate the law’s structure into practical steps you can use to reduce risk.

Prohibited Referrals

The core prohibition

You may not refer a Medicare or Medicaid patient for DHS to any entity if you or an immediate family member has an ownership, investment interest, or a compensation arrangement with that entity, unless an exception squarely fits. Likewise, the DHS entity generally may not bill Medicare, Medicaid, or anyone else for services provided pursuant to a prohibited referral.

Who is covered

The law applies to “physicians” (including doctors of medicine, osteopathy, dental surgery/medicine, podiatry, optometry, and chiropractors for services within their scope) and to their immediate family members. Your group practice, hospital partners, joint ventures, and management companies can all be affected if a financial tie exists.

What counts as a referral

Referrals include orders, requests, or certifications/recertifications of services or items, as well as establishing plans of care that result in DHS. Directing a patient to a particular facility or vendor also counts. Because the definition is broad, routine clinical actions—like ordering imaging or home health—can trigger Stark analysis.

Strict liability—how Stark differs from anti‑kickback rules

Unlike the Anti‑Kickback Statute, Stark does not require proof of intent. A well‑meaning arrangement can still violate Stark if the structure fails to meet every element of an exception. This strict framework is why up‑front contracting discipline is essential to Designated Health Services Compliance.

Designated Health Services Overview

The 12 DHS categories

• Clinical laboratory services
• Physical therapy services
• Occupational therapy services
• Outpatient speech‑language pathology services
• Radiology and certain other imaging services
• Radiation therapy services and supplies
• Durable medical equipment and supplies
• Parenteral and enteral nutrients, equipment, and supplies
• Prosthetics, orthotics, and prosthetic devices and supplies
• Home health services
• Outpatient prescription drugs
• Inpatient and outpatient hospital services

Code lists drive real‑world scope

Each category is implemented through detailed code lists. Your ordering patterns (e.g., imaging, infusion supplies, orthotics) should be mapped against current DHS codes to identify risk hot spots. Building an internal crosswalk and updating it regularly is a practical foundation for Designated Health Services Compliance.

Financial Relationships Defined

Ownership or investment interests

Equity, stock, membership interests, partnerships, and many debt instruments can be ownership or investment interests—whether held directly or through layers of entities. Even a small stake can matter if it ties your financial return to the DHS entity’s performance.

Compensation arrangements

Any arrangement involving remuneration—salary, bonuses, medical directorships, call coverage, space/equipment leases, management services, gainsharing, and value‑based payments—can be a compensation arrangement. Payments in goods or services, and certain “free” or discounted items, can also constitute remuneration.

Direct and indirect ties

Relationships can be direct (you contract with the DHS entity) or indirect (an unbroken chain of contracts links you to the DHS entity). Indirect arrangements still implicate Stark if the compensation takes into account the volume or value of your referrals or other business generated.

Immediate family and disclosure

Immediate family includes spouses, parents, children, siblings, in‑laws, step‑relations, grandparents, and grandchildren. Because family interests count, many organizations require physician attestations and periodic updates as part of their Financial Disclosure Requirements to surface and manage hidden risks.

Core compliance standards

Across the statute and its exceptions, three anchor concepts repeat: fair market value, commercial reasonableness, and no compensation determined in any manner that takes into account the volume or value of referrals. Embedding these standards into your contract templates and review checklists materially reduces Stark exposure.

Exceptions to Prohibited Referrals

How exceptions operate

Exceptions are narrow, element‑by‑element safe harbors. To rely on one, you must meet every requirement during the entire term of the arrangement. Whenever possible, use written, signed agreements with terms set in advance, compensation at fair market value, and documentation explaining commercial reasonableness.

Commonly used exceptions

• In‑office ancillary services. Allows a group practice or solo physician to furnish DHS (e.g., imaging, lab) under specific supervision, location, and billing conditions within the practice.
• Bona Fide Employment Exception. Permits employment compensation if it is consistent with fair market value, commercially reasonable, not determined by the volume or value of referrals, and may include productivity bonuses tied to personally performed services.
• Personal services arrangements. Covers independent contractor agreements (e.g., medical directorships) with a signed writing, set‑in‑advance compensation, and commercially reasonable, FMV terms.
• Fair market value compensation. A flexible pathway for time‑limited, FMV arrangements that do not vary with referrals.
• Indirect compensation arrangement. Applies when a chain of contracts exists and compensation can be structured to avoid referral‑based variability while meeting documentation requirements.
• Isolated transactions. Addresses a one‑time sale or purchase (e.g., equipment) if the price is FMV and no ongoing compensation exists.
• Non‑monetary compensation and incidental benefits. Allows limited, modest‑value items or benefits to medical staff if conditions are met and records are maintained.
• Physician recruitment and retention. Permits targeted support to bring or keep physicians in a community when the arrangement meets detailed community‑benefit and documentation criteria.
• Whole hospital/rural provider ownership. Ownership in an entire hospital or certain rural providers can qualify under stringent limitations and disclosures.
• Electronic health record and cybersecurity donations. Allows DHS entities to donate interoperable EHR or cybersecurity technology under FMV and interoperability safeguards to promote Health Care Fraud Prevention and data security.
• Value‑based arrangements. Enables pay‑for‑performance, shared savings/losses, and care coordination models when carefully structured around defined value‑based purposes, quality metrics, and beneficiary protections.

Operational tips

• Centralize contracts and track key dates to avoid inadvertent lapses or holdover periods that break an exception.
• Benchmark compensation and rent using independent FMV data; keep the work RVUs, call logs, or time sheets that substantiate payments.
• Maintain a current conflict‑of‑interest and family relationship attestation process to satisfy Financial Disclosure Requirements and update risk maps.
• Audit ordering patterns that touch DHS and reconcile them to exception files; verify that Medicare Referral Restrictions are addressed before services are billed.

Penalties for Violations

Payment consequences

Claims tied to a prohibited referral are not payable. If already paid, they are overpayments that must be identified, quantified, and refunded promptly. Failure to refund can escalate exposure and compound liabilities.

Civil and administrative sanctions

Violations can trigger Civil Monetary Penalties, per‑claim assessments, and potential Exclusion from Federal Health Programs. Entities that knowingly submit or cause the submission of noncompliant claims can face parallel sanctions.

Related liability pathways

Improper claims can also implicate the False Claims Act via implied certification theories, bringing treble damages and whistleblower actions into play. Repeat or systemic violations may lead to integrity agreements and enhanced oversight.

Mitigation and self‑disclosure

Robust compliance programs, timely internal investigations, and use of CMS’s self‑referral disclosure mechanisms can reduce penalties and demonstrate good‑faith remediation. Clear documentation and rapid corrective action materially influence outcomes.

Summary

The Stark Law prohibits you from referring patients for DHS when a financial relationship exists with the receiving entity, unless a precise exception applies. Anchor your program on fair market value, commercial reasonableness, and documentation that compensation does not vary with referral volume. By hard‑wiring these guardrails and monitoring high‑risk DHS categories, you can meet Designated Health Services Compliance standards and support sustainable Health Care Fraud Prevention.

FAQs.

What types of referrals are prohibited under the Stark Law?

Any referral of a Medicare or Medicaid patient for designated health services to an entity with which you or an immediate family member has an ownership/investment interest or compensation arrangement—unless an applicable exception is satisfied. The entity generally cannot bill for DHS furnished under a prohibited referral.

How is a financial relationship defined by the Stark Law?

It includes ownership or investment interests (e.g., equity, debt) and compensation arrangements (e.g., employment, leases, professional services, bonuses). Relationships can be direct or indirect, and family members’ interests count. Strong Financial Disclosure Requirements help surface and manage these ties.

What exceptions allow referrals despite financial relationships?

Common pathways include the in‑office ancillary services exception, the Bona Fide Employment Exception, personal services arrangements, fair market value compensation, indirect compensation, isolated transactions, certain non‑monetary/medical staff benefits, physician recruitment, EHR/cybersecurity donations, and value‑based arrangements—each with detailed, documentable conditions.

What penalties can doctors face for violating the Stark Law?

Consequences include nonpayment and mandatory refunds of DHS claims, Civil Monetary Penalties and assessments, potential False Claims Act exposure, and possible Exclusion from Federal Health Programs. Prompt self‑disclosure and corrective action can mitigate outcomes.