Medicare fraud can begin with something that doesn’t feel particularly dangerous: a phone call about a “free” genetic test, an unexpected package containing medical equipment, or a stranger who already knows your name. The stakes became clearer in August when the Centers for Medicare & Medicaid Services announced it had stopped more than $1.6 billion in potentially improper laboratory payments through fraud enforcement actions. According to CMS, the effort included revoking 157 fraudulent lab providers, suspending payments during investigations, recovering overpayments, and referring cases to law enforcement. The agency identified suspicious activity involving services that weren’t provided, medically unnecessary testing, upcoding, and questionable genetic and drug testing. Those cases make these seven Medicare fraud red flags worth recognizing before your Medicare number winds up attached to a claim you never expected.
1. Someone Wants Your Medicare Number for a “Free” Test or Product
Be cautious anytime “free” is immediately followed by a request for your Medicare number. Medicare’s fraud guidance specifically warns beneficiaries to be suspicious when someone says equipment or a service is free and claims they only need a Medicare number for their records. That could involve genetic testing, braces, medical equipment, laboratory services, or another supposedly Medicare-covered product. Your Medicare number has real value because criminals can potentially use it to submit claims for services and supplies you never received. Treat it like a credit card number and provide it only to legitimate health care providers, insurers, plans, or trusted organizations that have a valid reason to need it.
2. A Lab Test Appears That You Don’t Remember Having
This warning sign is particularly important after CMS’s latest enforcement action. The agency says some fraudulent laboratories have billed Medicare for services that couldn’t have been rendered, including one case involving 14 enrolled labs that collectively billed more than $24 million even though investigators found none of the laboratories operational. Review your Medicare Summary Notice and look at the provider name, dates, services, supplies, and amounts Medicare was billed. Don’t assume an unfamiliar laboratory name is legitimate simply because you recently had blood drawn, since doctors sometimes use outside laboratories but unexplained claims still deserve verification. One of the most useful Medicare fraud red flags is simply seeing a medical service in your records that you know never happened.
3. Medical Equipment Shows Up That You Never Ordered
An unexpected knee brace, back brace, glucose monitor, wheelchair, or other medical supply shouldn’t be treated like a harmless freebie. CMS reported in June that its Fraud Defense Operations Center had already accounted for more than $226 million in suspended Medicare payments involving suspect durable medical equipment billing since January 1, 2026. Medicare’s own fraud materials warn beneficiaries about unnecessary back braces, orthotics, power wheelchairs, scooters, and other equipment billed to the program. If a package appears unexpectedly, check whether Medicare was billed and contact the supplier or Medicare rather than simply putting the equipment in a closet. Fraudulent billing ultimately costs the Medicare program money even when the beneficiary never personally receives a bill.
4. A Caller Claims Medicare “Wants” You to Get Something
Scammers often make an offer sound official by implying that Medicare itself ordered, recommended, or approved the product. Medicare warns that it will never call beneficiaries to sell them anything or show up at their homes to sell products, and requests for personal information occur only in limited circumstances. Be especially suspicious if a caller says you’re “entitled” to a new brace, test, device, or benefit and immediately asks you to confirm your Medicare number. Caller ID isn’t enough proof because phone numbers and names displayed on your screen can be spoofed. Hang up and independently contact Medicare or your doctor if you’re unsure whether the service is legitimate.
5. Someone Offers Cash, Gift Cards, or Perks for Your Medicare Information
A $50 gift card can look insignificant compared with the billions of dollars involved in health care fraud, but that small incentive can open the door to much larger fraudulent claims. CMS warned during Medicare Fraud Prevention Week that people offering prepaid debit cards or other perks in exchange for a Medicare number are trying to scam beneficiaries. Medicare’s fraud guidance likewise tells beneficiaries not to accept offers of money or gifts in exchange for free medical care. The valuable item in that transaction isn’t the gift card. It’s your identity and your ability to generate Medicare claims. Offers of cash, prizes, groceries, gift cards, or other rewards tied to your Medicare information belong high on the list of Medicare fraud red flags.
6. Your Statement Shows a Diagnosis or Service That Doesn’t Make Sense
Fraud isn’t limited to completely invented appointments. Medicare warns that fraudulent activity can also include using an incorrect diagnosis or billing for services, supplies, or equipment a beneficiary didn’t receive. CMS’s August enforcement announcement similarly described upcoding, in which billing makes a service appear different or more expensive than what was actually provided. Keep a simple calendar of doctor appointments, tests, hospital visits, and major medical supplies, then compare it with your Medicare claims. If your statement says you received a complicated test on a Tuesday when you never left home, that’s something to question rather than ignore.
7. Someone Pressures You to Ask Your Doctor for Something You Don’t Need
Another warning sign occurs when a marketer tries to turn you into the person requesting an unnecessary medical service. Medicare’s fraud guidance tells beneficiaries to be suspicious of anyone asking them to contact a doctor for a service, supply, or piece of equipment they don’t actually need. This can make a questionable claim look more legitimate because a real physician becomes involved somewhere in the process. Your medical decisions should start with a genuine health need and a conversation with your health care provider, not a salesperson explaining how to “get Medicare to pay.” High-pressure tactics, claims that an offer expires immediately, or assurances that “Medicare pays for everything” are reasons to stop and verify before agreeing.
Your Medicare Statement Is One of Your Best Fraud Detectors
CMS can use artificial intelligence and sophisticated claims analytics to find suspicious billing patterns, but beneficiaries still have something government computer systems don’t: firsthand knowledge of the care they actually received. Check your claims regularly, compare them with your appointments and receipts, and investigate unfamiliar providers, tests, equipment, or dates instead of assuming Medicare will automatically catch everything. Original Medicare beneficiaries can view processed claims through a secure Medicare account, while Medicare Advantage and Part D members can review their plan’s Explanation of Benefits and claims information. If you spot Medicare fraud red flags, CMS says you can report suspected Parts A and B fraud through 1-800-MEDICARE, and the Senior Medicare Patrol can also help beneficiaries investigate and report suspicious activity.
Have you ever found a medical service, test, or piece of equipment on a Medicare statement that you didn’t recognize? Tell us what happened in the comments.
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