Medicare and supplemental plans come loaded with hidden benefits and loopholes that could save you thousands annually—but only if you know where to look. We’ve uncovered the strategies savvy seniors use to maximize their coverage and minimize out-of-pocket costs.

#1: Enroll During Open Enrollment Windows to Lock in Better Rates

Your insurance premiums aren’t set in stone—they reset every year during the Annual Enrollment Period (AEP), which runs from October 15 to December 7. Many seniors miss this window and end up paying higher rates for the entire year. By reviewing your plan options each fall, you might discover cheaper alternatives with better coverage. For example, switching from a Plan G to a Plan N supplement could cut your premiums by 20–30% while maintaining solid coverage.

#2: Use Preventive Care to Avoid Expensive Treatment Later

Medicare Part B covers routine screenings, vaccinations, and wellness visits at zero cost to you—yet many seniors skip them. Annual physicals, colonoscopies, bone density scans, and flu shots are entirely free under Original Medicare. Taking advantage of preventive services can catch conditions like diabetes or heart disease early, potentially saving you tens of thousands in future hospital bills and medications. Think of it as getting paid to stay healthy.

#3: Compare Prescription Drug Plans Annually—They Change Every Year

Your current Medicare Part D plan’s formulary (the list of covered drugs) shifts every January, and drug tiers and copays fluctuate constantly. A medication you paid $5 for last year might jump to $45 this year—or disappear from coverage altogether. Spending 30 minutes comparing the five to ten plans available in your area using Medicare.gov’s Plan Finder tool could cut your annual drug costs by hundreds. One senior switched plans and reduced her insulin copay from $250 to $35 monthly.

#4: Understand the Donut Hole and Plan Your Spending

Under Part D, you hit a coverage gap—the "donut hole"—once you and your plan spend $5,850 combined on covered drugs in 2024. In this gap, you’re responsible for a larger share of drug costs until you reach catastrophic coverage. Smart seniors coordinate big prescription refills around this gap, ask doctors for generic alternatives, or use manufacturer coupons to stay under the threshold. Knowing exactly when you’ll enter the gap lets you budget accordingly and avoid surprise bills.

#5: Leverage Medigap Plans to Plug Gaps in Original Medicare

Original Medicare covers a lot, but it leaves you exposed to deductibles, copays, and coinsurance that add up fast. A Medigap (supplemental) policy fills those gaps by covering costs Original Medicare doesn’t. Plan G or Plan N are the most popular because they cover your Part B deductible or cap your out-of-pocket costs. Without one, a single hospital stay could leave you paying thousands; with one, you’re often responsible for little to nothing.

#6: Check If You Qualify for the Low-Income Subsidy Program

If your income is below 150% of the federal poverty line (roughly $20,000–$24,000 annually for a single person), you may qualify for the Extra Help program, which drastically reduces or eliminates your Part D premiums and out-of-pocket drug costs. Most eligible seniors don’t even know this benefit exists. The application takes minutes on the Social Security website, and retroactive assistance can cover costs from up to three months prior.

#7: Appeal Denied Claims—Many Get Overturned on Request

When your insurer denies a claim, that’s not always the final word. Roughly 40% of appeals overturn the original denial, yet most seniors never bother filing one. You have the right to appeal within 60 days and request a human review. If your doctor says a treatment is medically necessary, include their letter with your appeal. One senior successfully appealed a denied knee replacement and saved $18,000 in out-of-pocket costs by simply pushing back.

These tactics won’t make you a healthcare millionaire, but they’re designed to help you keep more of your money while maintaining the coverage you need. The key is staying informed and taking action during designated enrollment periods.