Dr. Norman Rowe, a plastic surgeon with offices in New York and Florida, advertises on his website that breast reduction surgery usually costs between $15,000 and $25,000.

But these days, his practice sometimes earns $440,000 for the procedure.

Dr. Rowe has taken full advantage of a new arbitration system, part of a major consumer protection law Congress passed in 2020 with bipartisan majorities. The No Surprises Act was designed to eliminate surprise medical bills, for patients who showed up in the emergency room and were treated by a doctor who didn’t take their insurance.

It bars those out-of-network doctors from billing patients directly. Instead, they can plead their case to a government-approved arbitrator. If they win, the patient’s insurer has to pay their desired amount.

By all accounts, the law is successfully protecting patients against bills from doctors they never chose. But it has also generated an expensive unanticipated consequence: Doctors have flooded the arbitration system with millions of claims. Most are winning, often collecting fees hundreds of times higher than what they could negotiate with insurers directly or what they could have earned from patients before the law passed.