Medicare Open Enrollment 2026-2027: A Family Caregiver's Guide to Reviewing a Parent's Plan
Medicare open enrollment 2026 runs Oct 15 to Dec 7. A caregiver's guide to reviewing a parent's plan: the ANOC, three things to check, and when to switch.
ElderHearth offers general information, not financial, legal, or insurance advice. For a decision about a specific plan, use the free State Health Insurance Assistance Program (SHIP) or medicare.gov. We are not an insurance agency and do not sell plans.
Medicare open enrollment 2026 runs from October 15 to December 7, 2026, and any change your parent makes takes effect on January 1, 2027. This is the one time each year when almost anyone on Medicare can change their drug plan or their Medicare Advantage plan. Most people do nothing, and most years that is a mistake, because plans quietly change their prices and their covered-drug lists every year. This guide walks a family caregiver through what the window is, the three things to check on your parent's plan, and when it is worth switching.
The quick version:
- Dates: October 15 to December 7, 2026. Changes start January 1, 2027.
- Watch for the ANOC: your parent's plan mails an Annual Notice of Change by the end of September. It lists every change for 2027. Do not throw it out.
- Check three things: their drugs, their doctors and pharmacy, and the full yearly cost (not just the premium).
- Free, unbiased help exists: your State Health Insurance Assistance Program (SHIP) and 1-800-MEDICARE. Neither sells anything.
Medicare open enrollment 2026 dates: when is it?
The fall Medicare open enrollment period, officially the Annual Enrollment Period, is October 15 through December 7, 2026. It is the same dates every year. Anything your parent changes during that window starts on January 1, 2027, and the December 7 deadline is firm, so the practical job is to review their plan sometime in late October or November and act before it closes.
This period is open to anyone enrolled in Medicare Part A or Part B, including a parent who already has a Medicare Advantage or a Part D drug plan. It is separate from the one-time sign-up when your parent first became eligible for Medicare.
What can you actually change during open enrollment?
During the fall window, your parent can:
- Join, switch, or drop a Part D prescription drug plan.
- Join, switch, or drop a Medicare Advantage (Part C) plan.
- Move from Original Medicare to a Medicare Advantage plan, or from Medicare Advantage back to Original Medicare.
One thing this window is not built for is Medigap (Medicare Supplement) insurance, which follows different rules and, in most states, can require medical underwriting if your parent wants to switch after their first enrollment. If a Medigap change is on your mind, treat it as a separate conversation, ideally with SHIP.
Why review your parent's plan even if nothing feels wrong?
Because the plan changes underneath them. Every year, Part D and Medicare Advantage plans adjust their premiums, their copays, the list of drugs they cover (the formulary), and which doctors and pharmacies are in network. A plan that was a perfect fit in 2026 can quietly become a poor one for 2027 without your parent doing anything at all.
That is what the Annual Notice of Change (ANOC) is for. Every plan mails this document by the end of September, before open enrollment opens, and it spells out exactly what is changing for the coming year: the new premium, the new deductible, the drugs being dropped or moved to a higher cost tier, and any network changes. It is easy to mistake for junk mail. It is the single most useful piece of paper in this whole process, so the first thing to do when you visit or call is ask your parent whether it arrived and go through it together.
How to help a parent choose a Medicare plan: three things to check
You do not need to become a Medicare expert. For most families, a good review comes down to three questions.
- Are their drugs still covered, and at what cost? Make a current list of every medication your parent takes, then check it against the plan's 2027 formulary. A drug moving to a higher tier, or off the list, is the most common reason a plan stops being a good deal. Our guide to organizing an aging parent's medications makes building that list easier.
- Are their doctors and pharmacy still in network? This matters most for Medicare Advantage, where going out of network costs more or is not covered. Confirm your parent's primary doctor, any specialists they see, and their preferred pharmacy are still in the plan for 2027.
- What is the full yearly cost, not just the premium? A low premium can hide high copays, a big deductible, or costly drugs. Add up the premium, the deductible, and the expected copays for their actual medications and doctor visits. The plan with the lowest sticker price is often not the cheapest one to actually use.
The Medicare Plan Finder at medicare.gov does the math for you: enter your parent's drugs and pharmacy, and it estimates each plan's total yearly cost for their specific situation. It is the same tool SHIP counselors use.
Should my parent change Medicare plans?
Switching is worth it when the review turns up a real problem, and staying put is fine when it does not. In practice:
- Switch if a drug they rely on was dropped or moved to a much higher tier, a key doctor or their pharmacy left the network, or the Plan Finder shows another plan covering the same drugs and doctors for meaningfully less.
- Stay if the ANOC changes are minor, their drugs and doctors are still covered, and the total cost is still competitive. Change for its own sake is not the goal.
Keep the wider picture in view too. Even the best plan choice will not cover long-term custodial care, which remains Medicare's biggest gap and a major reason families end up paying for care out of pocket or through Medicaid. For the 2026 cost figures that carry into this decision, see our rundown of the Medicare changes for 2026.
Medicare Advantage open enrollment vs the fall period
Families often confuse the fall window with a second window in the new year. They are not the same, and knowing which is which prevents a missed opportunity.
| Fall Open Enrollment (AEP) | Medicare Advantage Open Enrollment (OEP) | |
|---|---|---|
| Dates | October 15 to December 7 | January 1 to March 31 |
| Who it is for | Anyone with Medicare Part A or B | Only people already in a Medicare Advantage plan |
| What you can do | Change Part D, change Medicare Advantage, switch between Original Medicare and Medicare Advantage | Switch to a different Medicare Advantage plan, or drop it and return to Original Medicare (with a drug plan) |
| What you cannot do | (Full range of changes) | Move from Original Medicare into a Medicare Advantage plan |
So if your parent is on Original Medicare and wants to try a Medicare Advantage plan, the fall period is their window, not the January one. The January to March period is only a second chance for a parent who is already in a Medicare Advantage plan and finds it is not working.
How to get free, unbiased help
The Medicare marketing season brings a wave of TV ads, robocalls, and mailers, and much of it comes from agents paid on commission. Your parent does not have to navigate that. Two sources cost nothing and sell nothing:
- Your State Health Insurance Assistance Program (SHIP) offers free one-on-one Medicare counseling in every state. Find your local office at shiphelp.org or through 1-800-MEDICARE.
- 1-800-MEDICARE (1-800-633-4227) and medicare.gov are the official source for plan details and the Plan Finder.
A good rule for the season: if someone calls your parent unprompted about their Medicare, they can hang up. Medicare does not cold-call, and real help does not need a same-day decision.
Frequently Asked Questions
When is Medicare open enrollment in 2026? October 15 to December 7, 2026. Any changes take effect January 1, 2027. These are the same dates every year.
Can I change my parent's Medicare plan for them? Yes, with their involvement. You can research plans, run the Medicare Plan Finder, and help them enroll, but the choice is theirs, and for privacy some steps may need your parent on the phone or a signed authorization on file. Doing it together is both the legal and the kind way.
What happens if we miss the December 7 deadline? The plan your parent has simply rolls into 2027 with its new prices and rules. In most cases you then have to wait for the next fall window, unless your parent qualifies for a Special Enrollment Period (for example, a move or a change in their situation) or is in a Medicare Advantage plan and uses the January to March window.
Does open enrollment affect Medigap (Medicare Supplement)? Not directly. Medigap follows its own rules, and outside your parent's initial Medigap enrollment, switching policies can involve medical underwriting in most states. The fall window is for Part D and Medicare Advantage. Ask SHIP before changing a Medigap policy.
Medicare Advantage vs Original Medicare: which is better for my parent? Neither is better for everyone. Medicare Advantage often has lower premiums and extra benefits but uses provider networks and prior authorization. Original Medicare (usually with a Medigap and a Part D plan) offers the widest choice of doctors but can cost more in premiums. The right answer depends on your parent's doctors, medications, budget, and how much they travel.
Before December 7
If you take one thing from this, make it this: find the Annual Notice of Change that landed in your parent's mail in September, sit down together, and check that their drugs, their doctors, and the total cost still work for 2027. If they do, you are done for the year with a clear conscience. If they do not, you have until December 7 to fix it, and a free SHIP counselor to help you choose. That is all Medicare open enrollment 2026 really asks of you: an hour at the kitchen table, maybe over the Thanksgiving visit, to keep aging in place affordable for another year.
If you would rather not think it through alone, you are welcome to write to us; we read every message.
Sources
- Medicare.gov, Open Enrollment.
- Centers for Medicare & Medicaid Services, Medicare Open Enrollment.
- National Council on Aging, Medicare Open Enrollment vs. Medicare Advantage Open Enrollment.
- State Health Insurance Assistance Programs, SHIP National Network.