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Medicare AEP 2026: A Moab Fall Enrollment Checklist
One window each year lets everyone on Medicare change their coverage — October 15 to December 7. Here's how to use it well in Grand County, step by step.
The bottom line
- Medicare's Annual Enrollment Period runs Oct 15 – Dec 7 — the one time each year everyone can change health and drug coverage.
- Changes you make take effect Jan 1; your current plan runs through December 31, so there's no gap.
- Even a plan you like can change its costs, drugs, or network next year — read your Annual Notice of Change before you decide.
- Miss December 7? If you're in Medicare Advantage, the Jan 1 – Mar 31 window gives you one more change.
- Compare on total cost, not premium — and remember the new $2,100 Part D out-of-pocket cap already limits your 2026 drug spending.
Medicare's Annual Enrollment Period — Open Enrollment — runs Oct 15 – Dec 7, and it's the one stretch each year when anyone with Medicare can change their coverage for the year ahead. Whatever you choose takes effect January 1. This checklist walks Grand County residents through exactly what to review, in what order, so you don't overpay or lose a drug or doctor next year.
What is AEP, and what can I actually change?
The Annual Enrollment Period is your yearly reset. From October 15 through December 7 you can switch between Original Medicare and Medicare Advantage, change or drop a Medicare Advantage plan, and join, switch, or drop a stand-alone Part D drug plan. It's different from your one-time Initial Enrollment Period at 65 — AEP comes around every single year, for everyone already on Medicare.
Sources: Medicare.gov Open Enrollment; Medicare.gov enrollment periods; Medicare.gov Part D costs ($2,100 2026 cap).
Which enrollment window am I in?
Medicare has more than one window, and they do different things. Here's how the fall Annual Enrollment Period compares to the January Medicare Advantage window and the rest of the year:
| Window | Dates | Who it's for | What you can do |
|---|---|---|---|
| Annual Enrollment Period (AEP) Main window | Oct 15 – Dec 7 | Everyone with Medicare | Switch between Original Medicare and Medicare Advantage; join, drop, or change a Medicare Advantage or Part D drug plan. |
| Medicare Advantage Open Enrollment Second chance | Jan 1 – Mar 31 | People already in a Medicare Advantage plan | Make one change — switch to another Advantage plan, or drop back to Original Medicare (and add a Part D plan). |
| Outside these windows SEP only | Rest of year | Only with a qualifying event | Changes generally need a Special Enrollment Period (a move, loss of coverage, or other qualifying life event). |
Source: Medicare.gov — Joining a plan & enrollment periods and Medicare.gov — Open Enrollment (Oct 15 – Dec 7).
What's my step-by-step AEP checklist?
You don't need to be an expert — you need a short routine. Work through these five steps between mid-October and December 7:
- Read your Annual Notice of Change. It arrives by late September. Check next year's premium, deductible, drug formulary, and provider network against what you have now.
- List your drugs and doctors. Write down every prescription (name and dose) and the providers you want to keep. This is what actually drives your total cost.
- Compare plans on Medicare Plan Finder. Enter your ZIP and drugs at medicare.gov/plan-compare to see every Grand County plan and your estimated yearly cost — not just the premium.
- Weigh total cost, not premium. Add up premium, deductible, copays, drug tiers, and the yearly out-of-pocket maximum. A $0-premium plan isn't automatically the lowest-cost choice.
- Enroll by December 7. Submit your choice before the deadline so coverage starts clean on January 1. Keep your confirmation number.
Want a second set of eyes before December 7?
Bring your current plan, your prescriptions, and your doctors, and we'll compare your Grand County options side by side — the plans available in your ZIP. Free, local, no pressure.
Book your fall review →Why should I compare even if I like my plan?
Because plans change even when you don't. Each fall, your plan mails an Annual Notice of Change (usually by late September) listing next year's premium, deductible, drug formulary, and provider network. A drug you take can move to a higher tier, a doctor can leave the network, or the premium can climb — all effective January 1. Ten minutes with your notice, or a quick review with a local advisor, is inexpensive insurance against a January surprise.
Why does my health picture shape the choice in Grand County?
Premium is only half the story — how a plan covers your conditions and medications decides your real yearly cost. Here's the chronic-condition load among Grand County adults:
Chronic-condition rates among Grand County adults
Source: CDC PLACES, 2023 — via the Medicare On Main Data Desk. Model-based prevalence among adults, 2023.
With high blood pressure affecting 33.3% of Grand County adults and diabetes 11.2%, many local residents take ongoing prescriptions — exactly where a plan's drug formulary and the $2,100 Part D cap matter most. Bring your exact medication list when you compare.
How we know all this: the Medicare On Main Data Desk frames every article with public data — here, Medicare enrollment dates from Medicare.gov and Grand County health figures from CDC PLACES (2023) — and uses qualitative guidance for anything (like specific plan counts and premiums) that changes year to year. This is education, not advice; confirm your plan, costs, and eligibility with a licensed agent or Medicare.gov. We take no payment from any carrier to feature a plan.
Frequently asked questions
When is Medicare's Annual Enrollment Period in 2026?
Medicare's Annual Enrollment Period — also called Open Enrollment — runs October 15 through December 7 every year, and 2026 is no exception. This is the main window when anyone with Medicare can change their health and drug coverage for the coming year. Your plan must receive your request by December 7.
What can I change during AEP?
During October 15 – December 7 you can switch from Original Medicare to a Medicare Advantage plan or back; join, drop, or switch a Medicare Advantage plan (with or without drug coverage); and join, drop, or switch a stand-alone Part D drug plan. It's the one time each year everyone can freely reshape their coverage.
When do my AEP changes take effect?
Any change you make during Open Enrollment takes effect January 1 of the following year, as long as the plan gets your request by December 7. Your current coverage stays in place through December 31, so there's no gap.
What if I miss the December 7 deadline?
If you're in a Medicare Advantage plan, you get a second chance: the Medicare Advantage Open Enrollment Period runs January 1 – March 31, when you can make one change — switch Advantage plans or return to Original Medicare with a Part D plan. Outside these windows, you generally need a Special Enrollment Period triggered by a qualifying event like a move or a loss of other coverage.
Do I need to do anything if I like my current plan?
It's still worth a quick review. Plans send an Annual Notice of Change each fall (usually by late September) spelling out next year's premiums, drug formulary, and network. A plan that fit this year can change its costs or drop a drug or provider for next year, so comparing during AEP — even if you end up staying — protects you from surprises on January 1.
Does Medicare On Main charge to review my plan during AEP?
No. Brian Penner is an independent, licensed Medicare advisor — paid by the carriers, not by you. A fall plan review is free, local, and no-pressure. Bring your current plan, your prescriptions, and your doctors, and we'll compare your Grand County options together.
Sources
- Medicare.gov — Open Enrollment (Oct 15 – Dec 7) — the Oct 15 – Dec 7 Annual Enrollment Period.
- Medicare.gov — Joining a plan & enrollment periods — how the enrollment windows work.
- Medicare.gov — Remember Key Medicare Dates — the key Medicare dates to remember.
- Medicare.gov — Part D drug costs (2026 out-of-pocket cap) — the $2,100 2026 out-of-pocket drug cap.
- CDC PLACES: Local Data for Better Health, County 2023 — Grand County chronic-condition prevalence (2023).