Medicare Supplement

Medigap alongside Original Medicare: a Mckeesport guide

McKEESPORT, Pa. — If Original Medicare has ever left you staring at a bill and wondering what happened, you're not alone. That's usually where a Medicare Supplement policy — often called Medigap — enters the picture. It doesn't replace Medicare. It works alongside it, quietly picking up some of the costs Original Medicare leaves behind.

Here's a plain-language look at what Medigap does, what it doesn't do, and how those standardized letter plans (A, B, G, N, and so on) actually work.

What Medigap is — and what it isn't

Medigap is private insurance you can buy to help pay some of the out-of-pocket costs that come with Original Medicare (Part A and Part B). Think deductibles, coinsurance, and copayments — the gaps in coverage that give the product its nickname.

A few things Medigap is not:

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

In short: Medigap is a supplement, not a stand-alone plan. You keep Original Medicare as your main coverage, and Medigap helps with the leftover costs.

How the standardized letters work

This is the part that confuses most people. In most states, including Pennsylvania, Medigap plans are standardized by the federal government and labeled with letters — Plan A, B, C, D, F, G, K, L, M, and N.

Here's the key idea: a Plan G from one insurance company covers the same core benefits as a Plan G from any other company. The letter tells you what's covered. The company and the price can differ, but the benefits inside that letter are set by law.

Two important notes:

• 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 date, those two are off the table.
• Plans K and L have out-of-pocket limits and cover a smaller share of costs, which is why their premiums often look different.

Because the benefits are standardized, shopping for Medigap is mostly about comparing price, customer service, and the insurer's rate history — not the benefit chart.

What Medigap generally helps pay for

Depending on the letter you choose, a Medigap policy may help cover:

• Part A hospital coinsurance and extra hospital days after Medicare runs out
• Part B coinsurance or copayment (usually the 20% Medicare doesn't pay)
• The first three pints of blood
• Hospice care coinsurance
• Skilled nursing facility coinsurance
• Part A deductible
• Foreign travel emergency care (on some plans, up to plan limits)

The higher-benefit letters, like G, tend to cover more of these items. Lower-benefit letters cover fewer. You can see the full standardized benefit chart on medicare.gov.

Timing matters: your Medigap Open Enrollment window

This is one of the most important — and most missed — rules in all of Medicare.

Your Medigap Open Enrollment Period is a six-month window that starts the month you're 65 or older AND enrolled in Part B. During those six months, insurance companies must sell you any Medigap policy they offer at their best available rate, regardless of your health history.

Miss that window, and in most cases insurers can use medical underwriting — meaning they can charge you more, or turn you down, because of pre-existing conditions. Pennsylvania has some limited protections in specific situations, but the safest bet is not to rely on them.

If you're approaching 65 in the Mon Valley, mark that window on your calendar.

Medigap and Part D: two separate decisions

Because Medigap doesn't include drug coverage, most people who choose Medigap also enroll in a stand-alone Part D prescription drug plan.

A few 2026 figures worth knowing:

• The Part D out-of-pocket cap is $2,100 in 2026 — once you hit that, you pay $0 for covered drugs the rest of the year.
• The maximum Part D deductible is $615.
• The old "donut hole" coverage gap has been eliminated as of 2025; Part D now has three phases instead of four.
• The Medicare Prescription Payment Plan lets you spread your drug costs across the year in monthly payments instead of paying big amounts at the pharmacy counter.
• IRMAA surcharges — higher premiums for higher earners — begin above $109,000 in income for a single filer in 2026.

These rules apply to Part D whether you pair it with Medigap or not.

What's available around McKeesport

McKeesport sits in Allegheny County, and Medicare plan availability — including Medicare Advantage and Part D options — is set at the county level. That means every ZIP code in Allegheny County sees the same menu of plans, even if your neighbor across the river in Westmoreland County sees a different list.

Medigap works a bit differently. Because the letter plans are standardized, availability is more about which insurance companies are licensed to sell Medigap in Pennsylvania and what they're charging this year. Rates can vary quite a bit between carriers for the exact same lettered plan, which is why comparing is worth the time.