Medicare Supplement

Medigap in Waldorf: What the Letter Plans Actually Cover

WALDORF, Md. — If you've spent even ten minutes shopping for Medicare coverage, you've probably run into a wall of letters: Plan A, Plan G, Plan N, Plan K. That's Medigap — Medicare Supplement insurance — and the alphabet soup is actually the point. Here's a plain-English look at what these plans do, what they don't, and how to think about them if you live in Charles County.

Medicare Supplement insurance, explained: what Medigap does and doesn't cover

What Medigap is (and isn't)

Medigap is private insurance that sits alongside Original Medicare (Part A and Part B). It helps pay some of the out-of-pocket costs Original Medicare leaves behind — things like coinsurance, copayments, and in some cases the Part A hospital deductible.

A few things Medigap is not:

• It is not Medicare Advantage (Part C). You can't have both at the same time.
• It doesn't include prescription drug coverage. For that, you'd add a separate Part D plan.
• It generally doesn't cover dental, vision, hearing aids, long-term care, or private-duty nursing.

To buy a Medigap policy, you need to already be enrolled in Part A and Part B.

How the standardized letters work

Here's the part that trips people up. In most states, Medigap policies are standardized by letter — A, B, C, D, F, G, K, L, M, and N. That means Plan G from one insurance company has to cover the same core benefits as Plan G from another. The letter tells you what's covered; the company and the price are what vary.

A few important notes, straight from Medicare.gov:

• Plans C and F are only available to people who became eligible for Medicare before January 1, 2020. If you aged into Medicare after that, those two are off the table.
• Plans K and L have lower monthly premiums but higher out-of-pocket limits before the plan pays 100%.
• Plan N typically has lower premiums than Plan G, but you may owe small copays for some office and ER visits.
• Massachusetts, Minnesota, and Wisconsin standardize their plans differently — but Maryland uses the standard federal lettering.

Because the benefits inside each letter are fixed by law, shopping Medigap is really about price, customer service, and whether the company raises rates predictably — not about hunting for a "better" version of Plan G.

The Waldorf angle

Waldorf is in Charles County, where residents on Original Medicare can choose from Medigap policies sold by insurers licensed in Maryland. Availability, pricing rules, and consumer protections are set at the state level by the Maryland Insurance Administration, not by the city or county. So two neighbors on the same street could be paying different premiums for the exact same lettered plan, simply because they bought from different companies or at different ages.

That's why comparing quotes for the same letter across a few insurers is usually the most useful thing a Waldorf resident can do.

Timing matters more than most people realize

The best window to buy a Medigap policy is your Medigap Open Enrollment Period — the six months that start the month you're 65 and enrolled in Part B. During that window, insurers can't turn you down or charge you more because of health conditions. This is called guaranteed issue.

Outside that window, in most states including Maryland, insurers can use medical underwriting. That means if you try to switch Medigap plans later — say from Plan N to Plan G — the company can ask health questions and potentially deny you or charge more. There are a few special situations that trigger guaranteed issue rights outside the initial window, but they're narrow.

How Medigap fits with Part D and 2026 rules

Because Medigap doesn't cover prescriptions, most people pair it with a stand-alone Part D drug plan. A few 2026 facts worth knowing:

• Part D now has a $2,100 annual out-of-pocket cap on covered drugs.
• The maximum Part D deductible is $615 in 2026.
• The old "donut hole" is gone — since 2025, Part D has just three phases.
• The Medicare Prescription Payment Plan lets you spread drug costs across the calendar year in monthly installments instead of paying big amounts at the pharmacy counter.
• IRMAA surcharges on Part B and Part D begin above $109,000 in income for a single filer in 2026.

The Medicare Annual Enrollment Period runs October 15 through December 7 each year — that's the main window for Part D changes. Medigap has its own separate timing rules and isn't tied to AEP.