You’re Probably Overpaying for Medicare — And Don’t Know It

Most people think once they sign up for Medicare, they’re all set for life. But here’s the uncomfortable truth: you could be overpaying by hundreds or even thousands of dollars per year without even realizing it. After working with thousands of Medicare clients, I’ve seen the same costly mistakes over and over again. The good news? These overpayments are completely preventable once you know what to look for.

Mistake #1: Not Shopping Your Medicare Supplement Premiums

This is the biggest money-waster I see, and it’s costing people serious cash every single month. Here’s what most people don’t understand: even though Medicare Plan G and Plan N offer standardized coverage across all carriers, the premiums can vary dramatically from company to company.

I recently worked with a client who was paying $240 per month for Plan G. After a quick review, we found the exact same Plan G coverage with a different carrier for just $180 per month. That’s over $700 in annual savings for identical benefits. The coverage didn’t change one bit — same doctors, same hospitals, same out-of-pocket costs — but her monthly premium dropped by $60.

If it’s been more than two years since you last compared your Medigap premiums, you’re likely overpaying. Insurance companies use different pricing strategies, and newer carriers often enter the market with more competitive rates to attract customers.

Agent Tip

Many people think they’re stuck with their Medicare Supplement once they choose it, but that’s not always true. While you may need to answer health questions to switch, if you’re in decent health, you could save hundreds annually by shopping around.

Mistake #2: Ignoring Your Part D Drug Plan Changes

Your Medicare Part D prescription drug plan isn’t a “set it and forget it” decision. Every year, drug formularies change, pharmacy networks shift, and costs get adjusted. A plan that saved you money last year might be overcharging you significantly this year.

Here’s a real example: I had a client whose diabetes medication was covered at a $20 copay under her old Part D plan. When the plan’s formulary changed, that same medication jumped to $75 per month because it moved to a higher tier. By switching to a different Part D plan during the annual enrollment period, we got her copay back down to $15.

The annual enrollment period runs from October 15th to December 7th, and any changes you make take effect January 1st. During this time, you should:

• Review your current medications against next year’s formulary
• Check if your preferred pharmacies are still in-network
• Compare total annual costs, not just monthly premiums
• Look for plans with better coverage for your specific drugs

I’ve seen people overpay by $500 or more annually on prescriptions simply because they didn’t review their options during open enrollment.

Mistake #3: Missing Better Medicare Advantage Options

If you’re on a Medicare Advantage plan, you might be missing out on significant improvements to your coverage and costs. Medicare Advantage plans change every single year, and new options frequently enter the market with better benefits.

Just last year, I helped clients in Phoenix and Dallas switch to new Medicare Advantage plans that offered:

• Better dental and vision coverage
• Lower maximum out-of-pocket limits
• Improved prescription drug coverage
• Larger provider networks
• $0 monthly premiums with enhanced benefits

One client was paying $89 per month for a Medicare Advantage plan with a $7,500 out-of-pocket maximum. We found a $0 premium plan with a $4,900 out-of-pocket limit and better drug coverage. That’s over $1,000 in annual premium savings plus better financial protection.

The key is understanding that Medicare Advantage plans vary significantly by location. What’s available in one zip code might be completely different from what’s offered just a few miles away. You need to review your specific options annually.

Agent Tip

Don’t assume your current Medicare Advantage plan is still the best option. I regularly see people staying on outdated plans for years while better options become available in their area. Annual reviews are essential.

The Hidden Overpayment: IRMAA Penalties

Here’s an overpayment that catches many people completely off guard: IRMAA (Income Related Monthly Adjustment Amount). If your income exceeds certain thresholds, Medicare charges you significantly higher premiums for both Part B and Part D coverage.

For 2026, these income thresholds start at $103,000 for individuals and $206,000 for married couples filing jointly. But here’s what many people don’t know: you can appeal IRMAA if your income has decreased due to:

• Retirement
• Divorce or marriage
• Death of a spouse
• Loss of income-producing property
• Cessation of pension payments

I’ve worked with clients who were paying over $100 extra per month in IRMAA penalties based on outdated income information. After filing the proper appeals with documentation of their income changes, they got their premiums reduced significantly.

How Much Could You Be Overpaying?

Let me put this in perspective with some real numbers I’ve seen:

Type of Overpayment	Typical Annual Overpayment	How to Fix It
Medicare Supplement Premium	$300 – $1,200	Compare carriers annually
Part D Drug Plan	$200 – $800	Review during open enrollment
Medicare Advantage Plan	$500 – $1,500	Evaluate new options yearly
Unnecessary IRMAA	$1,200 – $3,600	File income decrease appeal

When to Review Your Medicare Coverage

Don’t wait for problems to arise. Here’s when you should proactively review your Medicare coverage:

Medicare Supplement Plans: Review annually, especially if you’re healthy enough to potentially switch carriers. Supplement rate increases vary significantly between companies.

Part D Drug Plans: Review every single year during the October 15 – December 7 annual enrollment period. Your medication needs and plan formularies change constantly.

Medicare Advantage Plans: Review annually during open enrollment. New plans enter the market regularly, and existing plans modify their benefits and networks yearly.

IRMAA Appeals: Review immediately if you’ve experienced a qualifying life event that reduced your income.

Red Flags That You’re Overpaying

Watch for these warning signs that indicate you might be throwing money away:

• You haven’t reviewed your coverage in over two years
• Your Medicare Supplement premium has increased significantly
• Your prescription costs have jumped unexpectedly
• You’re paying IRMAA based on income from two years ago that no longer reflects your current situation
• New Medicare Advantage plans have become available in your area
• Your current plan’s provider network has shrunk

Taking Action to Stop Overpaying

The solution isn’t complicated, but it does require some effort. Comparing Medicare plans regularly is the only way to ensure you’re not leaving money on the table.

Start by gathering your current plan information, prescription list, and preferred providers. Then systematically review each component of your Medicare coverage. Look at total annual costs, not just monthly premiums. A plan with a higher premium might actually cost less overall when you factor in copays, deductibles, and out-of-pocket maximums.

Remember, Medicare is not a “one and done” decision. It requires ongoing attention to ensure you’re getting the best value for your healthcare dollars. The time you invest in annual reviews will pay for itself many times over in savings.

Frequently Asked Questions

How often should I review my Medicare coverage?

You should review your Medicare coverage annually during the open enrollment period (October 15 – December 7) for Medicare Advantage and Part D plans. For Medicare Supplement plans, review whenever you receive a rate increase notice or at least every two years if you’re in good health.

Can I switch Medicare Supplement companies anytime?

Yes, you can apply to switch Medicare Supplement companies anytime, but you’ll likely need to answer health questions and could be denied coverage. The best time to switch without health questions is during your initial enrollment period or if you qualify for guaranteed issue rights.

What if I can’t afford to switch to a better Medicare plan?

If you’re having trouble affording Medicare coverage, you may qualify for assistance programs like Medicare Savings Programs or Extra Help for prescription drugs. These programs can significantly reduce your Medicare costs based on your income and assets.

How do I know if I’m paying IRMAA unnecessarily?

Check your Medicare premiums against the standard amounts. If you’re paying more than the base $202.90 for Part B, you may be subject to IRMAA. If your income has decreased since the tax year Medicare is using for your assessment, you can file an appeal.

What’s the biggest mistake people make with Medicare costs?

The biggest mistake is treating Medicare like a “set it and forget it” decision. Medicare plans, costs, and your health needs all change over time. People who don’t review their coverage annually often end up overpaying by hundreds or thousands of dollars.