Medicare Advantage Plan Ending in 2027: What to Do Before December 7

If your Medicare Advantage plan is ending in 2027, you must choose new coverage by December 7, 2026, or you will start January 1 without that plan. Read the plan's non-renewal notice, compare at least two replacements, and check Medigap rights if you want to return to Original Medicare.

Insurers are pulling back from Medicare Advantage for 2027, and open enrollment is already underway. This guide is for people on Medicare Advantage now, and for anyone in their 40s and 50s who helps a parent with health coverage or plans to join Medicare in a few years. Simply Forties covers benefits and midlife money decisions, and this is one of those decisions with a hard deadline.

What Insurers Cut for 2027 and Why Your Plan May Be Affected

The federal government released its 2027 Medicare Advantage landscape on September 28, 2026. According to Healthcare Dive's analysis of that landscape file, UnitedHealthcare is dropping about 690 plans and Humana about 2,400. Insurers project enrollment to fall to roughly 34 million, down about 2 million.

That is a retreat from a high point. The Kaiser Family Foundation (KFF) found that 55% of eligible Medicare beneficiaries were in Medicare Advantage in 2026, about 35.2 million of 64.2 million people. Plan exits do not mean the whole market is leaving. They mean your specific plan may be one of the casualties.

Costs are shifting too. Healthcare Dive reports that average maximum out-of-pocket limits are up about 10% and average Part D deductibles are up about 30%. The Centers for Medicare & Medicaid Services (CMS) says the average premium falls, but reporters note that figure is skewed by cheaper special needs plans.

The plain reading is this. Your premium may look fine while your deductible and your out-of-pocket ceiling quietly go up. Judge a plan on the full year of likely costs, not the monthly premium alone.

What Should You Do If Your Medicare Advantage Plan Is Ending?

Open the non-renewal notice, note the date your coverage ends, and list your doctors and medicines. Then compare at least two replacement options before December 7. Choose between another Advantage plan and Original Medicare with a Medigap policy and a drug plan. Do not wait for the plan to choose for you.

Plans must send the Annual Notice of Change by the end of September. A plan that is ending sends a separate notice. Keep both, because the non-renewal letter can serve as proof when you apply for new coverage later.

Timing rules matter here. Medicare.gov's page on joining a plan says open enrollment runs October 15 to December 7, and the plan must receive your request by that last day. Changes take effect January 1.

A second window exists from January 1 to March 31, but only for people already in a Medicare Advantage plan. Special enrollment periods also apply after life events such as a move or a loss of coverage. Do not plan around exceptions when the main deadline is a few weeks away.

Here is a quick comparison of the three paths most people face.

Neither path is automatically better. The right answer depends on your health, your budget and which doctors you refuse to give up.

Original Medicare, Medigap and the 63-Day Window

Medigap is supplemental insurance that pays part of what Original Medicare leaves behind. Normally an insurer can look at your health history and say no. That changes when your plan ends.

According to Medicare.gov's guide to when you can buy Medigap, you can apply 60 days before your Advantage coverage ends and up to 63 days after. Medigap coverage starts only when the Advantage coverage ends. States may offer extra protections, so your State Insurance Department can confirm local rules.

Miss that window and no federal guarantee applies. Insurers can then decline you or charge more. That is the single costliest mistake in this process, and it is easy to make because the deadline is not tied to open enrollment.

One more catch. The guaranteed right applies when you return to Original Medicare. It does not apply if you simply switch to another Advantage plan. Decide which path you want before you start applying.

Check the Drug Plan and Out-of-Pocket Limit Before You Switch

Drug coverage trips up more people than doctors do. If you leave Medicare Advantage for Original Medicare, you also need a separate Part D plan. Skipping it can mean paying full price for prescriptions, plus a late penalty that follows you for years.

Use the Medicare Plan Finder and enter every medicine, the dose and your pharmacy. Compare the deductible, the tier of each drug and the yearly cost. The Part D out-of-pocket cap is a major protection, and our breakdown of Medicare costs and the $2,400 Part D cap shows how to budget around it.

Check Medicare Advantage out-of-pocket limits too. Healthcare Dive reports average limits up about 10% for 2027. A plan with a $0 premium and a $9,000 ceiling can cost more than a plan with a $40 premium and a $5,000 ceiling after one hospital stay.

Questions to ask before you enroll

Use this list when you call a plan or a counselor.

Free, unbiased help exists. Every state runs a State Health Insurance Assistance Program (SHIP), and counselors there do not sell plans. Call 1-800-MEDICARE and ask for your state's SHIP number.

Why This Matters in Your 40s and 50s

You are probably not enrolling in Medicare yet, so why read this? Two reasons. First, many people in their 50s manage coverage for a parent, and December 7 arrives fast. Second, this cycle shows how the system behaves, which helps you plan your own transition at 65.

At Simply Forties, our editors have seen the same pattern in every benefits cycle. People wait for the decision to feel urgent, and by then the choices are narrower. Build a short file now with your doctors, medicines and monthly budget so the decision takes an hour instead of a month.

If you retire before 65, you will need a bridge to Medicare. Our guide to ACA open enrollment for shoppers in their 50s covers that gap. If you have a high-deductible plan today, review our notes on 2027 HSA limits, because you must stop HSA contributions once Medicare starts.

Helping a parent without overstepping

Your parent must give permission before a plan or the Medicare program will discuss their account with you. A signed authorization form takes minutes. Sit together for the plan comparison, but let your parent make the final call on doctors.

Watch for pressure. Unsolicited calls pushing a quick switch are a common sign of a scam or an aggressive sales pitch. Real plan changes go through Medicare.gov or 1-800-MEDICARE.

A Seven-Step Checklist Before December 7

Work through these steps in order.

The Medicare Advantage open enrollment period from January 1 to March 31 offers a second try, but only for people already in an Advantage plan. It lets you switch plans or return to Original Medicare. Do not count on it as a safety net.

Conclusion

A discontinued plan is an inconvenience, not a disaster, as long as you act before December 7. Read the notice, price your real prescriptions, check your doctors and protect your Medigap rights.

Your next step is small. Find the notice today, put the deadline on your calendar and call your State Health Insurance Assistance Program for a free comparison. This article was reviewed by Simply Forties editors on October 28, 2026, using figures current as of that date. It is general information, not individual insurance advice.

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