Medicare 2026
Oct 15 to Dec 7: Medicare AEP Dates for Gaithersburg
GAITHERSBURG, Md. — The window that decides how millions of people pay for health care next year is open. From October 15 through December 7, 2026, Medicare's Annual Enrollment Period lets you review, switch, or drop your coverage for 2027. Whatever you pick — or don't pick — takes effect January 1.
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Key takeaways
- Medicare's Annual Enrollment Period runs from October 15 through December 7, 2026, letting most people review, switch, or drop coverage for 2027, with changes starting January 1.
- The Part D out-of-pocket cap is $2,100 in 2026 and $2,400 in 2027, and plans are adjusting formularies, pharmacy networks, and premiums in response.
- Your current plan's Annual Notice of Change, mailed by late September, explains what's different for 2027, so it's worth checking even if you plan to stay put.
- From January 1 through March 31, 2027, people already in a Medicare Advantage plan get one more chance to switch plans or return to Original Medicare, but this window doesn't let someone in Original Medicare join Medicare Advantage for the first time.
This fall the stakes feel a little different. The Part D out-of-pocket cap is $2,100 in 2026 and rises to $2,400 in 2027, and plans across the country are adjusting formularies, pharmacy networks, and premiums to match. That makes it worth a fresh look, even if you liked your plan last year.
What you can actually do between October 15 and December 7
The Annual Enrollment Period, or AEP, is the one time each year when almost everyone with Medicare can make changes. During this window you can:
- Switch from Original Medicare (Parts A and B) to a Medicare Advantage plan (Part C), or the other way around.
- Switch from one Medicare Advantage plan to another.
- Join, drop, or switch a Part D prescription drug plan.
Any change you make now starts January 1, 2027. If you do nothing, your current plan generally rolls over — but the plan itself may not be the same. That's the catch we'll get to next.
Read your Annual Notice of Change first
By late September, your current Medicare Advantage or Part D plan should have mailed you an Annual Notice of Change (ANOC). It's the document that spells out what's different for 2027 — premiums, drug tiers, copays, provider networks, and pharmacy partners.
If yours is sitting in a pile of mail, dig it out. A plan that fit in 2026 can look different in 2027, especially with the Part D cap continuing to reshape how drug costs are structured.
What's new for 2027
A few program-level changes worth knowing before you compare anything:
- Part D out-of-pocket cap rises to $2,400 in 2027 (it is $2,100 in 2026). Once your covered prescription costs hit that amount, you pay nothing for covered drugs the rest of the year.
- Part D deductible maximum is $700 in 2027 (it is $615 in 2026). Plans can charge less, but not more.
- No more "donut hole." Part D now has three phases: deductible, initial coverage, and catastrophic.
- Medicare Prescription Payment Plan. This optional program lets you spread your yearly drug costs across monthly payments instead of paying a big bill at the pharmacy counter. You can opt in for 2027.
- IRMAA. Higher-income enrollees pay surcharges on Part B and Part D. For 2026, those surcharges begin above $109,000 in income for a single filer (based on 2024 tax returns).
What Gaithersburg residents should know locally
Gaithersburg is in Montgomery County, and Medicare plan availability is set at the county level. That means when you use Medicare's Plan Finder, you'll be comparing the Medicare Advantage and Part D plans offered across Montgomery County — not just plans "in Gaithersburg." Your ZIP code narrows down which providers and pharmacies are considered in-network.
If your doctors are at Adventist HealthCare Shady Grove, Holy Cross Germantown, or one of the MedStar or Johns Hopkins locations nearby, check each plan's provider directory before you enroll. Networks change every year.
How to decide without getting overwhelmed
You don't need to compare every plan on the market. A short, honest checklist works better:
1. List your medications, including doses. Small formulary differences can matter more than premium differences. 2. List your doctors and preferred pharmacies. Confirm they're in-network for any plan you're considering. 3. Think about how you use care. Frequent specialist visits? Travel outside Maryland often? Those answers point you toward or away from certain plan types. 4. Look at total cost, not just premium. Deductibles, copays, and drug costs together tell the real story. 5. Check Star Ratings on Medicare.gov. They're a quality signal from CMS — one input among several, not a verdict.
If you want a human to walk through it with you, Maryland's State Health Insurance Assistance Program (SHIP) — locally called SHIP/MAP (Senior Health Insurance Assistance Program / Maryland Access Point) — offers free, unbiased counseling. You can reach the Montgomery County office through the county's Aging & Disability Services line.
If you miss December 7
You get one more shot, but it's narrower. From January 1 through March 31, 2027, the Medicare Advantage Open Enrollment Period lets people already in a Medicare Advantage plan switch to a different Advantage plan or drop back to Original Medicare (and add a Part D plan). It does not let someone in Original Medicare switch into Medicare Advantage for the first time.
Outside those two windows, you generally need a Special Enrollment Period — triggered by things like moving, losing other coverage, or qualifying for Extra Help.
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 Montgomery County
(MA penetration in Montgomery 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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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.
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The parts of Medicare
Good to know
Frequently asked questions
Do I have to do anything if I'm happy with my current plan?
I'm turning 65 in January. Does AEP apply to me?
Can I switch my Medigap (Medicare Supplement) plan during AEP?
- CMS — Medicare enrollment periods (medicare.gov)
For personalized answers, contact Medicare.gov, 1-800-MEDICARE, or your local SHIP.