The Eleventh Circuit Is About to Decide Whether Whistleblower Lawsuits Are Even Constitutional: What Zafirov Means for Florida Healthcare Providers

If you run a medical practice, a billing company, or any health care business in Florida, a single appellate ruling out of Tampa could change who is allowed to sue you for fraud, and whether those suits survive at all. The Eleventh Circuit is weighing whether the part of the False Claims Act that lets private citizens file fraud cases on the government's behalf violates the Constitution. That mechanism, called a qui tam action, is the engine behind a large share of federal health care fraud enforcement. A Florida federal judge already struck it down once. How the appellate court rules will shape the risk for every provider, owner, and billing operator in the state.

Key Takeaways

• The False Claims Act lets private citizens, called relators, sue for fraud on the government's behalf under 31 U.S.C. 3730, often before any criminal case exists.
• In United States ex rel. Zafirov v. Florida Medical Associates, the Eleventh Circuit is deciding whether qui tam relators are unconstitutional officers under Article II's Appointments Clause.
• Most federal health care fraud exposure runs through 18 U.S.C. 1347 (health care fraud) and 31 U.S.C. 3729 (the civil False Claims Act), which carries treble damages and per-claim penalties.
• Florida's Middle and Southern Districts are among the most active qui tam and health care fraud jurisdictions in the country.
• Pre-indictment is where these cases are won or lost. A sealed qui tam complaint can mean a federal investigation is already underway without your knowledge.

A sealed qui tam complaint often means the investigation is already underway. The Eleventh Circuit's ruling on whether relators are constitutional officers will determine how much of that enforcement machinery survives.

What Actually Happened

The False Claims Act has carried a qui tam provision since the Civil War. Under 31 U.S.C. 3730, a private person with knowledge of fraud against the government can file suit in the government's name. The complaint is filed under seal. The Justice Department investigates, then decides whether to take the case over or let the relator proceed alone. If the case recovers money, the relator keeps a share. That structure drives a substantial portion of health care fraud recoveries every year.

In 2024, a federal judge in the Middle District of Florida held that this structure is unconstitutional. The reasoning was direct. A qui tam relator wields core executive power by litigating on behalf of the United States, which makes the relator an officer under Article II's Appointments Clause. Officers must be nominated and confirmed, or appointed by a department head. A relator is self-appointed. The court concluded the statute cannot be squared with that requirement.

That ruling broke from decades of practice. The Justice Department and the relator appealed, and on December 12, 2025, a panel of the Eleventh Circuit heard argument in United States ex rel. Zafirov v. Florida Medical Associates. The judges pressed both sides hard, which signaled they were treating the constitutional question as a serious one rather than a quick reversal. A decision is pending. Whatever the panel does will bind federal courts across Florida, Georgia, and Alabama, and will likely push the question toward the Supreme Court, especially with the Third Circuit examining the same issue in a separate appeal.

A qui tam complaint is filed under seal while the government investigates. By the time it unseals, the investigation may have been running for a year or more. That is why the seal period is also the opportunity.

What the Government Is Actually Building

A constitutional fight over qui tam does not mean enforcement is slowing down. The opposite is true. The Justice Department and the Department of Health and Human Services have stood up a dedicated False Claims Act working group focused on health care. Prosecutors are leaning on data analytics to pick targets, flagging billing patterns and outlier providers before any whistleblower walks in the door. The 2026 National Health Care Fraud Takedown charged more than 450 defendants in connection with over 6.5 billion dollars in alleged fraud, with cases spread across dozens of federal districts.

On the administrative side, the Centers for Medicare and Medicaid Services reported a sharp jump in Medicare payment suspensions in the first half of 2026. A suspension freezes your revenue while an investigation runs, long before anyone proves a charge. For a Florida provider, that combination matters. Even if the courts narrow private whistleblower suits, the government keeps its own civil and criminal tools, and it is using all of them. South Florida remains one of the most aggressive federal health care fraud enforcement zones in the country.

Enforcement is not waiting on the constitutional ruling. Data analytics, a dedicated False Claims Act working group, and CMS payment suspensions are all running at full strength while the court deliberates.

Exposure and Charges

Health care fraud exposure in Florida is rarely a single statute. The civil False Claims Act, 31 U.S.C. 3729, allows treble damages plus a penalty for each false claim, which can dwarf the actual loss in a high-volume billing case. The criminal health care fraud statute, 18 U.S.C. 1347, carries up to ten years per count, and longer if the conduct results in serious bodily injury or death. Conspiracy under 18 U.S.C. 1349 lets the government charge an agreement without proving every overt act. Kickback arrangements bring in the federal Anti-Kickback Statute, 42 U.S.C. 1320a-7b.

The practical danger is that these tracks run in parallel. A sealed qui tam complaint can trigger a civil investigation, which can hand evidence to a criminal grand jury. Loss amount drives the sentencing guideline range, and in health care cases the government tends to calculate loss aggressively, using total amounts billed rather than amounts actually paid. That is where a federal investigation defense earns its keep: by contesting the loss theory early rather than at sentencing.

Civil and criminal tracks run in parallel. The FCA treble damages calculation and the criminal loss amount under the sentencing guidelines are often the most consequential numbers in the case.

Critical Mistakes People Make Early

The most damaging mistakes happen before charges are ever filed. Talking to federal agents without counsel is the first. Agents who show up about a billing issue are not there to clear your name, and a false statement to them is its own federal crime under 18 U.S.C. 1001.

Producing documents in response to a civil investigative demand or subpoena without a strategy is the second. What you turn over in a civil matter can resurface in a criminal one. Assuming a sealed case means nothing is happening is the third. By the time a qui tam complaint unseals, the government has often been investigating for a year or more. Waiting for an indictment to hire a lawyer forfeits the window when outcomes are still fluid.

A Strategic Defense Approach

The goal early is to shape the investigation before it hardens into charges. That means getting in front of the government's theory, controlling document production, and presenting the provider's side while charging decisions are still open. In a qui tam matter, the seal period is an opportunity. The defense can sometimes engage with the Justice Department on whether to intervene, and a declination changes the calculus considerably.

Cooperation versus litigation is a real decision, not a reflex. Some clients are better served by demonstrating compliance and contesting the loss calculation. Others need to litigate the government's legal theory head on, and the pending qui tam constitutional question may give certain defendants new leverage to do exactly that. Either way, the work of a white collar defense attorney is to map the exposure, then pick the path that protects the client's liberty and livelihood.

Why Timing Matters Right Now

Two clocks are running. The first is the investigation itself, where the early window to influence the outcome closes fast once the government commits to a theory. The second is the appellate ruling. If the Eleventh Circuit narrows or strikes the qui tam mechanism, pending relator-driven cases in Florida could be exposed to new challenges, and the leverage in those matters shifts. If the court upholds the statute, the whistleblower pipeline keeps running at full strength. Providers who are already under scrutiny should not wait to see which way the ruling lands. The defense moves that matter most are the ones made before the decision, not after.

Common Questions

Facing a Federal Investigation in Florida?

The seal period is when outcomes are most fluid. A healthcare provider who gets counsel during the investigation has options that close after charges are filed.

Facing a federal health care fraud investigation in Florida, or worried a sealed qui tam case may name your practice? Early, confidential counsel is the most useful step you can take. AMC Defense Law handles federal investigations and prosecutions involving health care fraud and the False Claims Act, in Florida and nationwide. Contact the firm to arrange a confidential consultation about your situation.