Medicare AEP: What To Know and Deadlines

Scott Joyce | Nov 12 2026 14:00

The Medicare Annual Enrollment Period, often called AEP, is an important opportunity to review whether your health coverage still fits your needs. Medicare insurance plans can change from year to year, including their costs, provider networks, prescription drug coverage, and added benefits. A yearly review can help you avoid unwelcome surprises and make choices with confidence.

Medicare AEP runs from October 15 through December 7 each year. Changes made during this period generally begin on January 1 of the following year. You are not required to change plans, but taking time for a Medicare annual plan review can help ensure your coverage remains a practical match for your healthcare needs and budget.

Your Medicare Choices During Annual Enrollment

Annual Enrollment gives people already enrolled in Medicare a chance to revisit their coverage as their circumstances change. Health needs, medications, preferred providers, and financial priorities can all look different from one year to the next. AEP is designed to give beneficiaries a defined time to make adjustments when needed.

If you have Original Medicare, which includes Medicare Parts A and B, you may decide that a Medicare Advantage plan better suits your current situation. Medicare Advantage plans bring hospital and medical coverage together and may also include Part D prescription drug coverage in the same plan.

Others may decide to leave a Medicare Advantage plan and return to Original Medicare. For some people, broader access to providers or the ability to pair Original Medicare with Medicare Supplement insurance may be more closely aligned with their priorities.

During AEP, you may also be able to:

  • Move from one Medicare Advantage plan to another.
  • Enroll in a standalone Medicare Part D plan.
  • Change your existing prescription drug plan.
  • Drop a standalone Part D prescription drug plan.

Medicare enrollment decisions do not have to be permanent. The Annual Enrollment Period provides a valuable opportunity to compare Medicare plans and make changes based on up-to-date information.

Why an Annual Medicare Review Is Worth Your Time

It is understandable to want to keep a plan that has worked well. Still, even satisfied members should review their Medicare coverage each year. Medicare Advantage and Medicare Part D plans are offered by private insurance companies, and plan details may be different for the next coverage year.

Changes may affect monthly premiums, deductibles, copayments, coinsurance, and annual out-of-pocket limits. Provider networks and extra plan benefits can also be updated. A plan that represented good value this year may not offer the same cost or convenience next year.

A complete Medicare plan comparison looks beyond one feature. Reviewing the available choices helps you consider how your coverage may work with your expected medical care, financial goals, and day-to-day healthcare routine in the coming year.

Review Prescription Drug Coverage Carefully

A Medicare prescription drug review is especially important during AEP. Each Part D plan has a formulary, or list of covered medications, and that list can change annually. A medication you take now may be placed in a different cost tier, subject to additional requirements, or handled differently by your plan next year.

These updates may affect what you pay at the pharmacy. Checking that your medications remain covered and understanding how they will be priced can help you make a more informed decision about Medicare Part D plans and Medicare Advantage plans that include drug coverage.

It is also wise to confirm your preferred pharmacy. Pharmacy networks may change between plan years, and using an in-network pharmacy can be an important part of managing prescription costs.

Confirm Your Doctors, Hospitals, and Pharmacies

Your provider network deserves attention during Medicare open enrollment. Doctors, hospitals, specialists, and pharmacies can join or leave a plan network from one year to the next. Confirming these details before making a selection can help reduce the chance of an unexpected interruption after new coverage starts.

For people who value seeing certain physicians or using a particular hospital system, provider access may be just as important as the monthly premium. This is one reason a Medicare plan review should look at the full coverage picture instead of focusing on a single number.

Understand Medicare Costs Beyond the Premium

The monthly premium is often the first cost people notice when comparing Medicare plans. It is important, but it does not tell the whole story. A plan with a lower premium may not necessarily have the lowest overall cost for your individual healthcare needs.

When Medicare costs are explained clearly, it is easier to look at the total picture. Consider the plan deductible, copayments, coinsurance, annual out-of-pocket maximum, expected doctor visits, and prescription expenses. Together, these details offer a more realistic view of what coverage could cost over the course of a year.

Additional benefits should be reviewed as well. Depending on the Medicare Advantage plan, benefits may include routine dental care, vision services, hearing support, fitness programs, transportation assistance, or an allowance for certain over-the-counter health products.

Those benefits may change annually, too. Comparing them during AEP may uncover an option that better supports your overall health and wellness while offering stronger value for your situation.

Get Clear, Personalized Medicare Guidance

Sorting through Medicare insurance options can feel complicated. Plans can differ in their costs, networks, drug coverage, and supplemental benefits, making it difficult to identify the choice that best fits your needs without help.

Show Me 65 provides personalized, no-cost Medicare guidance for people throughout the St. Louis Metro area, including Illinois and Missouri communities. As an independent Medicare advisor, Show Me 65 can explain available Medicare Advantage, Medigap, and Part D options without pressure and help you review how annual plan changes may affect you.

A local Medicare agent can help you compare coverage based on your doctors, prescriptions, budget, and priorities. The purpose of a review is not to encourage a change every year. It is to make sure you have current, understandable information before deciding whether to keep your plan or explore another option.

Make a Confident Decision Before December 7

The Medicare Annual Enrollment Period is more than a deadline for switching plans. It is a chance to confirm that your current coverage continues to support your health, financial needs, and future plans.

By reviewing plan updates, checking prescription drug coverage, verifying providers and pharmacies, and considering total costs, you can approach the new year with greater confidence. If your existing coverage remains the right fit, an annual review can provide reassurance. If it does not, AEP gives you time to make an informed adjustment.

For Medicare help in Belleville and across the St. Louis Metro area, Show Me 65 offers straightforward support for Medicare plan comparisons and annual reviews. Contact Show Me 65 at (618) 207-2080 to discuss your Medicare options and receive unbiased information tailored to your needs.