Many people ask us whether Medigap and Medicare Advantage plans are the same thing. They’re not-and the differences matter a lot for your wallet and your healthcare options.
At Dave Silver Insurance, we’ve helped thousands of people navigate these two distinct paths. This guide breaks down how each works so you can pick the right fit for your needs.
What Is Medicare Advantage (Part C)
How Medicare Advantage Plans Work
Medicare Advantage, also known as Part C, is a private insurance alternative to Original Medicare that bundles hospital, medical, and often prescription drug coverage into a single plan. Instead of going through Original Medicare Parts A and B, you enroll in a private plan contracted with Medicare. As of 2025, 54% of Medicare beneficiaries with Parts A and B are enrolled in Medicare Advantage, totaling about 34.1 million people according to Kaiser Family Foundation analysis of CMS data.
This represents a dramatic shift-MA enrollment has grown from roughly 20 million in 2018 to 34 million in 2025, showing that millions of people have chosen this route over traditional Medicare.
Coverage and Network Structure
These plans must cover the same services as Original Medicare, but they deliver coverage through a private insurer’s network of doctors and hospitals. Many MA plans also include benefits that Original Medicare doesn’t cover, such as eyeglasses, dental care, hearing aids, or gym memberships. The network structure carries real implications: you may need referrals to see specialists, and care outside the network is often limited or not covered at all.
Financial Protection and Out-of-Pocket Costs
The biggest financial protection is the annual out-of-pocket maximum-in 2025, that cap sits at $9,350, meaning once you hit that number, the plan pays 100% of covered services for the rest of the year. Original Medicare has no such cap, which can leave you exposed to unlimited costs. However, costs can still add up depending on your health needs and how much you use out-of-network care. According to Kaiser Family Foundation data, 23% of MA enrollees spend more than 10% of their income on health care costs annually, compared with 17% of Medigap beneficiaries.
Understanding how Medicare Advantage structures its benefits and costs sets the stage for comparing it with Medigap, which takes an entirely different approach to supplementing your Medicare coverage.
What Is Medigap Insurance
Medigap is supplemental insurance that fills the gaps Original Medicare leaves behind. Unlike Medicare Advantage, which replaces Original Medicare entirely, Medigap works alongside Parts A and B to cover costs that Medicare doesn’t pay. You still receive your care through Original Medicare doctors and hospitals, but Medigap picks up expenses like deductibles, copayments, and coinsurance. According to Kaiser Family Foundation data, about 12.2 million traditional Medicare beneficiaries held Medigap coverage in 2023, representing roughly 43% of those staying with Original Medicare. This shows Medigap isn’t a niche product-it’s a mainstream choice for people who want predictable healthcare costs without network restrictions.
How Medigap Policies Supplement Original Medicare
Medigap operates on a simple principle: it covers what Original Medicare doesn’t. The Part B deductible alone was $283 in 2026, so a plan that covers this protection saves money immediately. Some Medigap plans also cover emergency care when you travel outside the United States, which Medicare Advantage plans rarely do. You continue to pay your Part B premium, and Medigap premiums sit on top of that cost. The standardization across insurers means you can focus on price rather than decoding different plan designs.
Types of Medigap Plans and Their Coverage
There are up to 10 standardized Medigap plans available, labeled A through N. Plans C and F are no longer available to people who joined Medicare on or after January 1, 2020, which eliminates some options for newer beneficiaries. Plan G typically covers the Part B deductible and coinsurance that Original Medicare requires you to pay. Plans C, D, F, G, M, and N offer emergency coverage when you travel outside the United States. The standardization means Plan G from one insurer covers identical services as Plan G from another insurer-the only difference is the monthly premium.
Premiums and Enrollment Requirements
Medigap premiums vary dramatically based on the plan you choose and your location. Average Medigap premiums were about $2,600 annually in 2023 according to Kaiser Family Foundation data, but you’ll find plans ranging from roughly $30 to $40 per month for basic coverage up to $400 or more for comprehensive plans. The cheapest plans come with cost-sharing built in, meaning you still pay some expenses out of pocket. The enrollment timing matters enormously.
You have a 6 month “Medigap Open Enrollment” period starting when you turn 65 and enroll in Part B-during this window, you can buy any Medigap policy in your state without underwriting, regardless of pre-existing conditions. Miss this window, and insurers can deny coverage or charge higher premiums. Some states including Connecticut, Massachusetts, Maine, and New York have exceptions that allow guaranteed issue outside the standard window, but most states don’t. One important gap: Medigap doesn’t cover prescription drugs, so you’ll need a separate Part D plan if you take medications regularly. That’s an additional monthly premium on top of Part B and Medigap.
The way Medigap handles provider choice and cost predictability stands in sharp contrast to how Medicare Advantage structures its benefits and networks-differences that directly affect which option works best for your situation.
Key Differences Between Medigap and Medicare Advantage
The core tension between Medigap and Medicare Advantage comes down to three practical realities that directly affect your healthcare experience and your bank account. With Medicare Advantage, you trade provider freedom for cost predictability through an annual out-of-pocket cap. You select doctors and hospitals within the plan’s network, and care outside that network costs substantially more or receives no coverage at all. Original Medicare paired with Medigap works differently-you can see any doctor who accepts Medicare anywhere in the country, but you face unlimited out-of-pocket costs unless you purchase supplemental coverage. According to Kaiser Family Foundation data, 23% of Medicare Advantage enrollees spend more than 10% of their income on health care annually compared with 17% of Medigap beneficiaries, which shows that network restrictions don’t always produce lower actual spending.
Network Restrictions Shape Your Care Access
Medicare Advantage plans require referrals in many cases. You must obtain approval before seeing a specialist, and out-of-network care is typically limited or excluded entirely. If you travel frequently or maintain relationships with doctors outside the plan’s network, this becomes a significant problem.
Medigap eliminates this friction completely-you maintain the freedom of Original Medicare, meaning no referrals, no networks, and no surprises when you visit a doctor. The trade-off is that Medigap premiums climb steeply as you age, and the cheapest plans include cost-sharing that means you still pay something at the doctor’s office.
Out-of-Pocket Costs Behave Differently
Medicare Advantage caps your annual out-of-pocket spending for covered services, providing a hard ceiling on your costs. Once you hit that limit, the plan covers everything else for the remainder of that year. Medigap works differently-it doesn’t cap your premiums, but certain plans cover most or all of your cost-sharing, making your expenses predictable month to month rather than capped annually. The Part B deductible gets covered immediately by most Medigap plans, whereas with Medicare Advantage you pay that deductible out of pocket before the plan activates.
Prescription Drug Coverage Requires Different Planning
If you take medications, Medicare Advantage often bundles Part D coverage into one plan, simplifying enrollment and potentially offering better pricing on drugs you actually use. Medigap forces you to shop separately for Part D coverage, which means comparing formularies and networks independently. However, Medigap gives you flexibility to switch Part D plans annually during the open enrollment period without losing your Medigap coverage, whereas switching Medicare Advantage plans might require changing your entire coverage structure. This additional layer (a separate Part D premium on top of Part B and Medigap) adds complexity that Medicare Advantage plans eliminate through integration.
Final Thoughts
The answer to “Is Medigap the same as Medicare Advantage plan?” is definitively no. Medicare Advantage bundles your coverage into one private plan with network restrictions but an annual out-of-pocket cap, while Medigap supplements Original Medicare and lets you see any doctor without network limits. Your choice depends on what matters most-provider freedom and travel flexibility point toward Medigap, while simplicity and integrated drug coverage favor Medicare Advantage.
Start by listing your current doctors and hospitals, then check whether they participate in Medicare Advantage plans available in your area. Compare the annual out-of-pocket maximums against typical Medigap premiums for plans that appeal to you. Factor in your prescription drug needs, whether you travel internationally, and how much medical care you typically use each year.
We at Dave Silver Insurance have spent over 17 years helping people work through this exact decision. Our team walks you through your specific situation, compares actual plan options available to you, and explains how each choice affects your wallet and your access to care. Contact us today to get personalized guidance tailored to your health and financial needs.
Disclaimer: The information provided in this blog is for general informational purposes only and does not constitute legal, financial, or insurance advice. Coverage options, terms, and availability may vary. Please consult with a licensed professional for advice specific to your situation