If you’re like most medical practices, you’ve probably heard of both Stark Law and the Anti-Kickback Statute—but the differences between them are where most compliance mistakes happen.

Here’s the problem: Many practices assume that if they’re compliant with one law, they’re safe. That’s not true.

In fact, the Office of Inspector General (OIG) makes it clear that an arrangement can comply with Stark Law and still violate the Anti-Kickback Statute.

That’s why understanding how these laws differ is critical to protecting your practice.

The Core Difference (Simplified)

Let’s break this down in the simplest way possible:

• Stark Law: Focuses on physician self-referrals
• Anti-Kickback Statute (AKS): Focuses on payments for referrals

Here’s the key distinction:

Stark Law is strict liability
AKS is intent-based

This means:

• Under Stark Law, you can violate the law even if you didn’t mean to
• Under AKS, prosecutors must show intent—but that’s often easier than you think

The OIG confirms that Stark does not require intent, while AKS is a criminal statute based on “knowing and willful” conduct.

Who the Laws Apply To (Scope Matters)

One of the biggest differences is who is affected.

• Stark Law: Applies specifically to physicians and their referrals
• AKS: Applies to anyone involved in healthcare business arrangements

That includes:

• Physicians
• Practice managers
• Vendors
• Hospitals
• Billing companies

AKS applies broadly to all federal healthcare programs, while Stark is limited to physician referrals for designated services.

This broader scope is why AKS creates much wider exposure across your entire operation.

What Each Law Prohibits

Understanding what each law targets is where clarity really matters.

Stark Law:

• Referring patients to entities where you have a financial relationship
• Applies only to specific services (Designated Health Services)

AKS:

• Offering or receiving anything of value in exchange for referrals
• Applies to ANY service reimbursed by federal programs

AKS prohibits the exchange of remuneration for referrals, while Stark focuses on financial relationships tied to referrals.

That means AKS is far broader and often harder to identify in real-world scenarios.

Civil vs. Criminal Risk (Why This Really Matters)

This is where the stakes change significantly.

• Stark Law = Civil penalties
• AKS = Criminal + civil penalties

AKS violations can lead to:

• Fines
• Federal charges
• Prison time

Stark violations typically result in:

• Repayment obligations
• Denied claims
• Civil fines

AKS is a criminal statute, while Stark is civil, which significantly raises the severity of enforcement.

Exceptions vs. Safe Harbors (Critical Compliance Difference)

Both laws allow certain arrangements—but they work differently.

• Stark Law → Exceptions (must meet ALL requirements)
• AKS → Safe Harbors (optional but protective)

Here’s the key issue: Meeting a Stark exception does NOT protect you under AKS

The OIG explicitly states that compliance with Stark does not guarantee AKS compliance.

This is one of the biggest compliance traps for practices.

When Both Laws Apply (Most Dangerous Scenario)

In many cases, both laws apply at the same time.

Example:

• You refer patients to a facility you own → Stark issue
• You receive payments tied to referrals → AKS issue

That single arrangement could trigger:

• Civil penalties
• Criminal exposure
• False Claims Act liability

Regulators frequently pursue cases under both statutes simultaneously.

Quick Comparison Table

Key Area	Stark Law	Anti-Kickback Statute
Intent Required	No (strict liability)	Yes (intent-based)
Applies To	Physicians only	Anyone
Scope	Designated Health Services only	All federal healthcare services
Type of Law	Civil	Criminal + Civil
Focus	Financial relationships	Payments for referrals
Protection	Exceptions	Safe harbors

Action Steps: How to Stay Compliant With BOTH

To protect your practice, you must evaluate arrangements under both laws—not just one.

Start here:

• Review all financial relationships AND referral patterns
• Eliminate any compensation tied to referral volume
• Ensure fair market value and documentation
• Evaluate both Stark exceptions AND AKS safe harbors

Most importantly, never assume compliance under one law protects you under the other.

You Need to Think About BOTH—Always Stark Law and the Anti-Kickback Statute are designed to work together—but they operate differently. If you only understand one, your practice is still exposed. The practices that avoid audits and penalties are the ones that: Evaluate both laws together Document everything Proactively review arrangements Get step-by-step guidance on Stark Law and Anti-Kickback compliance, including real-world examples and actionable strategies. Watch the Stark Law & Anti-Kickback Compliance: Avoid Costly Violations, Audits, and Penalties in Your Practice training.

 

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