Medicare Supplement
Turning 65 in Alpharetta? Your Medigap clock starts now
Turning 65 in Alpharetta is a milestone — and for anyone thinking about a Medigap policy, it also starts a clock. The day your Medicare Part B coverage begins, so does a six-month window that federal law reserves just for you. Miss it, and the rules for buying a Medigap plan change in ways many people don't see coming.
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Click to call 855-729-3240Key takeaways
- Your six-month Medigap Open Enrollment Period begins the first month you are both 65 or older and enrolled in Part B, and it cannot be repeated.
- During this window, insurers must sell you any Medigap policy they offer at their best available rate, regardless of your health history.
- After the window closes, insurers in Georgia can generally use medical underwriting to charge more, exclude conditions, or deny coverage altogether.
- Medigap works only with Original Medicare — you cannot use a Medigap policy alongside a Medicare Advantage plan.
Here's what Fulton County residents should understand before that window closes.
What the six-month window actually is
The Medigap Open Enrollment Period is a one-time, federally protected six months. It starts the first month you are 65 or older and enrolled in Medicare Part B. If your Part B begins July 1, your window runs July through December.
During those six months, you have what's called a "guaranteed issue right." Any insurer licensed to sell Medigap in Georgia must:
- Sell you any Medigap policy they offer.
- Charge you the same rate they'd charge a healthy person your age.
- Cover pre-existing conditions (a short waiting period can apply if you didn't have prior creditable coverage).
This is the only stretch of time when every Medigap door is guaranteed to be open.
Why this window is different from everything else
Medicare has several enrollment periods — the Annual Enrollment Period from October 15 to December 7, the Medicare Advantage Open Enrollment Period from January 1 to March 31, and various special enrollment events. Those windows apply to Medicare Advantage and Part D drug plans.
Medigap is different. It's regulated mostly at the state level and, outside of a handful of narrow guaranteed-issue situations, insurers are not required to accept you at all after your one-time window closes.
That's the piece many Alpharetta readers say catches them off guard: there's no annual "do-over" for Medigap the way there is for Advantage or Part D.
What changes after the six months end
Once your window closes, Georgia insurers can generally use medical underwriting when you apply for a Medigap plan. That means they can look at your health history and:
- Charge you a higher premium based on your health.
- Impose a waiting period for pre-existing conditions.
- Decline to issue a policy at all.
There are limited exceptions — for example, certain guaranteed-issue rights kick in if an employer plan ends or a Medicare Advantage plan leaves your area. But these are narrow, time-sensitive, and not a substitute for using your original six-month window.
How this fits with the rest of Medicare in Fulton County
Alpharetta is in Fulton County, where residents have a full menu of Medicare choices: Original Medicare (Parts A and B), Medicare Advantage plans (Part C), stand-alone Part D drug plans, and Medigap policies that pair with Original Medicare.
A few 2026 program-level facts worth knowing as you plan:
- Part D has a new $2,100 annual out-of-pocket cap on covered drugs.
- The Part D deductible is capped at $615.
- The old coverage gap ("donut hole") is gone — Part D now has three phases.
- The Medicare Prescription Payment Plan lets you spread drug costs across the year.
- IRMAA surcharges on Part B and Part D premiums begin above $109,000 in income for a single filer.
Remember: you cannot combine Medigap with a Medicare Advantage plan. Choosing between those two paths is a separate decision, and it's worth thinking through before your Medigap window opens.
Practical steps before the clock runs out
- Confirm the exact month your Part B coverage starts — that's the start of your six months.
- Compare the standardized Medigap plan letters (Plan G, Plan N, and so on). Benefits within a letter are the same across insurers; premiums are not.
- Ask whether the insurer uses "community-rated," "issue-age," or "attained-age" pricing, since that affects how premiums change over time.
- If you're still working past 65 and have employer coverage, talk with your benefits office before delaying Part B, so you don't accidentally shorten or delay your Medigap window.
By the numbers
Medicare Part B premium, 2006–2026
The standard monthly Part B premium has climbed from $88.50 in 2006 to $202.90 in 2026. Hover any point for that year’s premium.
Source: CMS. Standard premium shown; in some hold-harmless years many existing enrollees paid less. Confirm at Medicare.gov.
By the numbers
How people get Medicare in Fulton County
(MA penetration in Fulton County)
MA penetration from CMS enrollment data; Medigap share is an estimate. U.S. average is about 54% Medicare Advantage. These are area-level figures, not plan-specific.
Key dates
Medicare enrollment periods at a glance
- Around your 65thInitial Enrollment PeriodA 7-month window around the month you turn 65 — your first chance to sign up.
- October 15 – December 7Annual Enrollment PeriodAnyone with Medicare can join, switch, or drop a Medicare Advantage or Part D plan.
- January 1 – March 31Medicare Advantage Open EnrollmentIf you're already in a Medicare Advantage plan, you can make one change.
- January 1 – March 31General Enrollment PeriodFor people who missed their first chance to sign up for Part B.
- VariesSpecial Enrollment PeriodTriggered by life events like moving or losing other coverage.
Dates are set by Medicare and apply nationwide. Confirm your personal windows at Medicare.gov or 1-800-MEDICARE.
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The parts of Medicare
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When can you enroll? An interactive year
Enrollment windows are federal and the same nationwide. Confirm your personal dates at Medicare.gov or 1-800-MEDICARE.
Good to know
Frequently asked questions
Does the Medigap Open Enrollment Period ever repeat?
What if I'm under 65 and on Medicare because of a disability?
Can I switch from Medicare Advantage to Medigap later?
Where can I get unbiased help in Alpharetta?
- CMS — Medicare Supplement Insurance (Medigap) rules (medicare.gov)
- CMS — Medicare enrollment periods (medicare.gov)
For personalized answers, contact Medicare.gov, 1-800-MEDICARE, or your local SHIP.
Also for Alpharetta
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This page was last updated: September 2026.