Medicare Supplement

Which Medigap plan letters can you actually buy in Atlanta today?

ATLANTA — If you have Original Medicare and you're weighing a Medicare Supplement policy, sometimes called Medigap, the first thing worth knowing is that these plans come in standardized letters set by the federal government. That's true in Atlanta, across Fulton County, and everywhere else in Georgia. The letter tells you what the policy covers. Where insurers compete is on price and service, not on the benefits inside a given letter.

Here's a plain-language look at which letters people in Atlanta can buy right now, how Medigap fits alongside Original Medicare and a Part D drug plan, and the Georgia rules that shape your choice.

What Medigap is — and what it isn't

Medigap is private insurance that helps pay some of the out-of-pocket costs Original Medicare leaves behind, like coinsurance and copayments. It only works with Original Medicare. If you're enrolled in a Medicare Advantage plan, you can't use a Medigap policy at the same time.

Medigap also does not include prescription drug coverage. If you want help with drug costs, you'll add a stand-alone Medicare Part D plan. For 2026, Part D has a maximum deductible of $615 and, for the first time at this level, a $2,100 annual cap on what you pay out of pocket for covered drugs. The old "donut hole" has been replaced by a simpler three-phase design since 2025, and there's an optional Medicare Prescription Payment Plan that lets you spread drug costs across the year in monthly installments.

The plan letters you can buy in Georgia

Because Medigap is federally standardized (except in Massachusetts, Minnesota, and Wisconsin, which follow their own systems), a Plan G in Atlanta covers the same core benefits as a Plan G anywhere else in Georgia — or in Florida, or Ohio.

For people newly eligible for Medicare today, Georgia offers these letters:

• Plan A
• Plan B
• Plan D
• Plan G
• Plan G High-Deductible (G-HD)
• Plan K
• Plan L
• Plan M
• Plan N

Plans C and F still exist, but they're only sold to people who were eligible for Medicare before January 1, 2020. If you're aging in now, they're off the table.

Each letter covers a different mix of Medicare's cost-sharing. Some, like K and L, have their own out-of-pocket limits and cover a percentage of certain costs rather than the full amount. Plan N has small copays for some office and emergency room visits. High-deductible G has a lower premium but you pay a deductible before benefits kick in. Medicare.gov has a benefit-by-benefit chart you can compare side by side.

How Medigap pairs with Original Medicare and Part D

Think of it as three pieces that fit together:

1. Original Medicare (Parts A and B) pays the bulk of your hospital and doctor bills. 2. A Medigap policy picks up much of what Original Medicare leaves behind, depending on the letter. 3. A stand-alone Part D plan covers prescription drugs.

You keep your red, white, and blue Medicare card and see any provider in the country who accepts Medicare. There are no networks with Medigap. That's the trade-off many Atlanta residents weigh against Medicare Advantage: broader access and more predictable bills, usually in exchange for a monthly premium on top of your Part B premium.

If your income is above $109,000 as a single filer in 2026, an IRMAA surcharge may be added to your Part B and Part D premiums. That's separate from Medigap.

The Georgia rules that shape your choice

Two things drive what you pay for the same lettered plan: the insurer, and when you apply.

Your Medigap Open Enrollment Period. Under federal law, you get a one-time six-month window that begins the month you're 65 or older and enrolled in Part B. During that window, any insurer selling Medigap in Georgia must sell you any plan they offer, at their best available rate for your age, without asking health questions. Miss it, and outside of certain guaranteed-issue situations, insurers in Georgia can use medical underwriting — meaning they can charge more or turn you down based on your health.

How the premium is built. Insurers in Georgia can price policies in different ways (for example, based on your age when you buy, or your current age), which affects how the premium changes over time. The Georgia Office of Insurance and Safety Fire Commissioner publishes rate information you can compare.

State-specific rights. Some states have extra protections like a "birthday rule" that lets you switch Medigap plans each year without underwriting. Whether and how any similar right applies in Georgia is a question worth confirming directly with the state insurance department or GeorgiaCares, Georgia's State Health Insurance Assistance Program (SHIP), before you assume it does.

How to shop it in Atlanta

Atlanta is in Fulton County (with parts in DeKalb), and Medigap availability is set at the state level rather than the county level, so the letters listed above apply throughout the metro. To find insurers and prices:

• Use the Medigap policy search at Medicare.gov by ZIP code. It lists every insurer licensed to sell each lettered plan in your area.
• Review the Georgia insurance department's Medigap rate guide for a look at how premiums compare.
• Call GeorgiaCares, the state SHIP, for free one-on-one counseling. They don't sell anything.

A practical tip: once you've picked the letter you want, get quotes from more than one insurer for that same letter. Because benefits inside a letter are identical by law, price and customer service are what actually differ.