Medicare Advantage Fraud and Overcharges: What Every Beneficiary Should Know
If you or someone you love is enrolled in a Medicare Advantage plan, recent headlines may have you wondering: Is my insurer billing for care I never received? Is my diagnosis accurate? Am I paying — or is the taxpayer system — for something that did not happen?
Those are fair questions. And the answer from federal investigators is sobering.
What investigators have found
In 2025, the Department of Health and Human Services Office of Inspector General (HHS-OIG) participated in the largest health care fraud takedown in U.S. history. The operation resulted in criminal charges against 324 defendants — including 96 doctors, nurse practitioners, pharmacists, and other licensed professionals — across 50 federal districts, with intended losses exceeding $14.6 billion.
Medicare Advantage, the private-plan alternative to Original Medicare, has been a particular focus. The Medicare Payment Advisory Commission (MedPAC) found that Medicare payments to private plans were 20 percent higher per beneficiary than spending for similar beneficiaries in traditional Medicare — translating to roughly $84 billion in additional federal spending in a single year.
A Wall Street Journal investigation uncovered something even more specific: insurers pocketed an estimated $50 billion from Medicare for diseases that no doctor ever treated. The mechanism is straightforward. Insurers add diagnoses to patients’ medical records — often through phone screenings or home visits conducted by nurses working for the insurer — that do not match the care patients actually received.
How the overcharges work
Medicare Advantage plans receive risk-adjusted payments from the federal government. In theory, this means plans that cover sicker patients receive higher payments to account for greater care needs. The system is designed to be fair: plans that invest in identifying and treating chronic conditions are compensated for that work.
The problem emerges when diagnoses are added to records not because a doctor determined a patient has a condition, but because the diagnosis triggers a higher payment from Medicare. HHS-OIG audits found that roughly 83 percent of high-risk diagnosis codes reviewed lacked sufficient documentation, resulting in overpayments across multiple audited plans.
For beneficiaries, this can mean a few things. Your medical record may contain conditions you do not have. Those inaccurate diagnoses could affect which treatments your plan recommends or approves. And the system your future Medicare benefits depend on is being drained by inflated payments.
What regulators are doing about it
Congress is paying attention. Representative Lloyd Doggett and other lawmakers have highlighted the scale of billions extracted through fake diagnoses, calling for stronger enforcement and transparency requirements.
The False Claims Act recoveries hit a record $6.8 billion in 2025, driven in large part by health care fraud investigations. Network accuracy is also under scrutiny — HHS-OIG found that 72 percent of behavioral health providers listed in Medicare Advantage network directories were inaccurately listed, either because they were out-of-network or not actually practicing where the directory said.
Enforcement is expected to intensify through 2026 and beyond. Barnes & Thornburg, a law firm tracking health care compliance trends, has predicted that network accuracy and adequacy enforcement will be a growing area of federal oversight.
What you can do as a beneficiary
You do not need to be a policy expert to protect yourself. A few practical steps can help:
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Review your Explanation of Benefits (EOB) statements. If you see a diagnosis code or service listed that does not match care you received, contact your plan and ask for clarification. You have the right to understand what is being billed on your behalf.
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Ask questions during health assessments. If your plan calls to schedule a “free” health screening or home visit, understand that the information gathered may be used to adjust your risk score. You can decline these visits — it will not affect your coverage.
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Compare your plan options annually. During Medicare Open Enrollment (October 15 through December 7), review whether your current plan still serves your needs. A plan that overcharges the system may also underperform on the care and access that matter to you.
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Report concerns. If you suspect fraudulent billing, visit oig.hhs.gov to reach the HHS Office of Inspector General hotline. You can also report concerns to your State Health Insurance Assistance Program (SHIP) for free, local counseling.
The bigger picture
Medicare Advantage serves more than half of all Medicare beneficiaries today. The program was built on the promise that private competition would deliver better care at a fair price. When insurers exploit the risk-adjustment system, they undermine that promise for every enrollee — and for the taxpayers who fund the program.
This is not a reason to abandon Medicare Advantage. Many plans deliver genuine value: coordinated care, additional benefits like dental and vision, and predictable out-of-pocket costs. But it is a reason to choose carefully, stay informed, and expect more from the plans that profit from the system.
At Trek Insurance Solutions, we help beneficiaries in multiple states navigate their Medicare options with honest, straightforward guidance. We do not represent every plan available — but we represent the plans we believe in, and we will always tell you what we know and what we do not.
If you have questions about your Medicare coverage, your plan’s billing practices, or whether a Medicare Advantage plan is right for you, reach out. We are here to help you make the choice that fits your life.
888-960-0442 · trekis.net
Trek Insurance Solutions is a Third-Party Marketing Organization (TPMO). We do not offer every plan available in your area. Any information we provide is limited to those plans we do offer in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options.