Medicare Guide

Medicare Open Enrollment 2027: 7 Costly Mistakes to Avoid

Medicare Open Enrollment is an important time to review your healthcare coverage and determine whether your current plan still meets your needs.

For 2027 coverage, the Medicare Open Enrollment Period runs from October 15 through December 7, 2026. During this period, eligible beneficiaries can make certain changes to their Medicare Advantage and prescription drug coverage, with changes generally taking effect January 1, 2027.

Senior couple meeting an advisor during Medicare Open Enrollment 2027 — Medicare Open Enrollment 2027: 7 Costly Mistakes to Avoid 2

However, choosing Medicare coverage isn’t simply about finding the plan with the lowest monthly premium.

Your doctors, prescription medications, healthcare needs, provider networks, benefits, and potential out-of-pocket costs can all affect whether a plan is a good fit.

Here are 7 common Medicare Open Enrollment mistakes to avoid.

1. Automatically Keeping Your Current Medicare Plan

One of the easiest mistakes is assuming that your current plan will remain exactly the same.

Medicare Advantage and Part D plans can change from year to year. Premiums, deductibles, copayments, provider networks, prescription coverage, and benefits may be different for the upcoming year.

Before automatically renewing, review your plan’s Annual Notice of Change (ANOC).

This document explains important changes to your coverage and costs for the following year.

What should you check?

Look at:

Monthly premiums
Deductibles
Copayments
Coinsurance
Out-of-pocket costs
Prescription coverage
Provider networks
Pharmacy networks
Dental benefits
Vision benefits
Hearing benefits

A plan that worked well this year may not necessarily be the best fit for next year.

2. Choosing a Plan Based Only on the Monthly Premium

A low monthly premium can be attractive, but it shouldn’t be the only thing you consider.

Some plans may have other costs when you visit doctors, specialists, hospitals, or pharmacies.

Instead of asking:

“How much is the monthly premium?”

also ask:

“What could I potentially pay when I actually use my coverage?”

Consider the plan’s:

Deductible
Copayments
Coinsurance
Maximum out-of-pocket amount
Prescription costs
Specialist costs
Hospital costs

Looking at the complete cost structure can give you a better understanding of how the plan may fit your healthcare needs.

3. Forgetting to Check Your Prescription Drugs

If you take prescription medications, don’t overlook your drug coverage.

Different Medicare Part D and Medicare Advantage plans can have different formularies, pharmacies, tiers, and costs.

A medication that is covered by one plan may have different coverage or costs under another plan.

Before choosing a plan, make a list of the medications you currently take and check:

Whether each medication is covered
Which tier the medication is on
Your expected copayment or coinsurance
Which pharmacies are preferred
Whether mail-order options are available

This can be particularly important if you take several medications regularly.

4. Not Checking Whether Your Doctors Are in the Network

Your preferred doctor can be an important part of your Medicare decision.

Medicare Advantage plans often have provider networks, and the costs you pay can depend on whether you use providers inside or outside the plan’s network.

Before selecting a Medicare Advantage plan, check whether your:

Primary care physician
Specialists
Preferred hospital
Clinics
Other important healthcare providers

are included in the plan’s network.

If keeping a particular doctor is important to you, verify the provider information before enrolling.

5. Ignoring Dental, Vision and Hearing Benefits

Dental, vision, and hearing coverage can be important considerations when comparing Medicare options.

Some Medicare Advantage plans may offer benefits for services such as:

Routine dental care
Vision exams
Eyewear
Hearing exams
Hearing aids

However, benefits can vary significantly between plans.

Don’t assume that every Medicare Advantage plan provides the same benefits.

Look at the details, including:

Annual benefit limits
Covered services
Copayments
Provider networks
Eligibility requirements
Frequency limitations

Understanding the details can help you avoid unpleasant surprises later.

6. Waiting Until the Last Minute

Another common mistake is waiting until the final days of Open Enrollment to start comparing plans.

Medicare Open Enrollment runs from:

October 15 – December 7, 2026

for 2027 coverage.

Waiting too long can make the process feel rushed.

Instead, start reviewing your coverage early.

Give yourself enough time to:

Review your current plan.
Read your Annual Notice of Change.
Review your prescriptions.
Check your doctors.
Compare available plans.
Ask questions.
Make an informed decision.

You don’t have to wait until December to start researching.

7. Choosing a Plan Without Understanding the Details

Medicare coverage can involve many details, and advertisements don’t always tell you everything you need to know.

A plan may advertise attractive benefits, but you should still investigate the actual coverage.

Before choosing a plan, ask:

Are my doctors covered?

Are my prescriptions covered?

What will I pay when I use healthcare services?

What benefits are actually included?

Are there provider or pharmacy restrictions?

Is the plan available in my area?

What changes are happening for 2027?

The more you understand before enrolling, the more confidently you can make your decision.

What Should You Do During Medicare Open Enrollment?

Start by reviewing your current Medicare coverage.

Then compare it with the options available for the upcoming year.

Your review should include:

Your healthcare providers

Make sure your preferred doctors, specialists, hospitals, and other providers work with the coverage you’re considering.

Your prescriptions

Check your medications and understand how each plan covers them.

Your costs

Look beyond the monthly premium and consider other potential healthcare expenses.

Your benefits

Review dental, vision, hearing, prescription, and other benefits that are important to you.

Your plan’s availability

Confirm that the plan you’re considering is available in your location for 2027.

When Is Medicare Open Enrollment for 2027?

For 2027 Medicare coverage, the Medicare Open Enrollment Period is:

October 15, 2026 – December 7, 2026

Changes made during this period generally take effect January 1, 2027.

Medicare beneficiaries should review their coverage every year because plans and benefits can change.

What You Can and Can’t Change During Medicare Open Enrollment 2027

Medicare Open Enrollment 2027 runs from October 15 to December 7, 2026. During this window you can:

Switch from Original Medicare to a Medicare Advantage plan
Switch from Medicare Advantage back to Original Medicare
Change from one Medicare Advantage plan to another
Join, drop or switch a Medicare Part D drug plan

What Medicare Open Enrollment does not do is give you a special right to buy a Medigap policy. In most states, if you switch back to Original Medicare and apply for Medigap outside your one-time Medigap Open Enrollment Period, the insurer can review your health history. New York is an exception, because Medigap insurers there must accept applications year-round. Read more in our guide, What Is Medigap?

Medicare Open Enrollment vs Other Enrollment Periods

Medicare Open Enrollment is not your only chance to make changes. Here is how it fits with the other Medicare windows:

Enrollment period	Dates	Who it’s for
Medicare Open Enrollment	October 15 – December 7	Anyone with Medicare who wants to change health or drug plans for next year
Medicare Advantage Open Enrollment	January 1 – March 31	People already in Medicare Advantage, who can make one change
Special Enrollment Periods	Varies	People with certain life events, such as moving or a plan leaving the area
Initial Enrollment Period	7 months around your 65th birthday	People signing up for Medicare for the first time

Turning 65 soon? See our guide on when to sign up for Medicare.

What’s New for Medicare Open Enrollment 2027

A few changes make this year’s review especially important:

Part D costs are rising: the maximum Part D deductible goes up to $700 in 2027, and the yearly out-of-pocket cap for covered drugs goes up to $2,400.
Plan exits: some insurers are leaving certain counties or ending plans for 2027. Read our article on 2027 Medicare Advantage plan changes.
Fewer stand-alone drug plans: the number of stand-alone Part D plans available in many areas has been shrinking, so your current plan may not be the best value anymore.

Bonus Mistake: Not Checking for Help With Costs

Many people pay more than they need to because they never check whether they qualify for help. Two programs are worth knowing about:

Extra Help lowers Part D premiums, deductibles and copays for people with limited income and resources.
Medicare Savings Programs can help pay Part B premiums, and in some cases deductibles and coinsurance. They are run by your state Medicaid office.

You can apply for Extra Help through Social Security at any time of year, not just during Medicare Open Enrollment.

How to Compare Plans for Medicare Open Enrollment 2027

When you sit down to compare plans, focus on total yearly cost rather than the monthly premium alone. For each plan you are considering, write down:

The monthly premium
The medical deductible and the drug deductible
Copays for your primary care doctor, specialists and hospital stays
The yearly maximum out-of-pocket limit
The estimated yearly cost of your prescriptions from the Medicare Plan Finder

Adding these together gives you a much clearer picture of what each plan could really cost you in 2027.

Your Medicare Open Enrollment 2027 Checklist

Use this quick checklist before December 7:

Read your 2027 Annual Notice of Change from your current plan.
Make a list of your doctors, specialists and hospitals.
Make a list of your prescriptions, doses and preferred pharmacy.
Compare plans on the Medicare Plan Finder by estimated total yearly cost.
Check each plan’s maximum out-of-pocket limit.
Confirm dental, vision and hearing benefits if they matter to you.
Check whether you qualify for Extra Help or a Medicare Savings Program.
Enroll before December 7 so your coverage starts January 1.

Medicare Open Enrollment Tips for Caregivers

Many adult children help a parent through Medicare Open Enrollment. If you are a caregiver, a little preparation goes a long way:

Ask your parent to sign a form that lets their plan and Medicare speak with you, such as a Medicare authorization form.
Gather their current plan ID card, Annual Notice of Change and a full medication list.
Write down their doctors, specialists and preferred pharmacy.
Check whether they might qualify for Extra Help, a Medicare Savings Program or Medicaid.
Keep copies of any enrollment confirmation numbers.

Rami at Caring Curations has personal experience helping elderly parents understand Medicare and Medicaid, so we understand how stressful this season can be for families.

Medicare Open Enrollment Examples: How These Mistakes Play Out

The examples below are simplified and hypothetical, but they reflect situations we see every fall during Medicare Open Enrollment.

Example 1: The doctor who left the network

Linda kept the same Medicare Advantage plan for three years without reviewing it. For 2027, her cardiologist’s practice left the plan’s network. Because she didn’t read her Annual Notice of Change, she only found out in January, when a specialist visit cost far more than expected. A 20-minute review in October would have shown the change and given her time to pick a plan that kept her cardiologist in network.

Example 2: The “free” plan that wasn’t

Robert chose a $0 premium plan because it looked like the cheapest option. He takes several brand-name medications, and two of them were on a high tier in his new plan. Once he added up his drug copays, a plan with a modest monthly premium would have cost him less over the year. Entering his prescriptions into the Medicare Plan Finder during Medicare Open Enrollment would have shown the difference.

Example 3: The couple who waited until December

Maria and James started comparing plans on December 5. With only two days left, they couldn’t confirm whether their doctors were in network and ended up keeping their old plans by default. Starting in mid-October would have given them time to ask questions and compare options calmly.

What these examples have in common

In each case, the problem wasn’t a bad plan. It was a missed review. Medicare Open Enrollment is the one time each year when most people can change their coverage, so a short, careful check of your doctors, drugs and costs is worth the effort. If you would rather not do it alone, we are happy to help.

Special Situations During Medicare Open Enrollment

If you have Medicaid or Extra Help: you may have more chances to change plans during the year, not just during Medicare Open Enrollment. Ask about Special Needs Plans designed for people with both Medicare and Medicaid.

If you have retiree or employer coverage: talk to your benefits office before you make any change. Joining a Medicare Advantage or Part D plan can affect your employer or retiree coverage, and in some cases you may not be able to get it back.

If you are moving: a move to a new service area usually gives you a Special Enrollment Period, so you may not need to wait for Medicare Open Enrollment to choose a new plan.

Avoid Medicare Marketing Scams This Fall

Medicare Open Enrollment is also peak season for misleading ads and scam calls. Medicare will never call you to sell a plan. Don’t share your Medicare number with anyone who contacts you unexpectedly, and be wary of TV ads promising extra money back in your Social Security check. If you aren’t sure, call 1-800-MEDICARE or speak with a licensed advisor you trust.

Frequently Asked Questions About Medicare Open Enrollment 2027

When is Medicare Open Enrollment for 2027 coverage?

It runs from October 15 through December 7, 2026. Changes take effect January 1, 2027.

Do I have to do anything during Medicare Open Enrollment?

No. If you are happy with your plan and it is continuing, your coverage usually renews automatically. Still, it is wise to review your plan’s 2027 changes first.

Can I change my Medigap plan during Medicare Open Enrollment?

Medigap isn’t tied to Open Enrollment. In most states, insurers can review your health when you switch Medigap plans, but New York allows applications year-round.

What if I miss the December 7 deadline?

If you are in Medicare Advantage, you can make one change from January 1 to March 31. Otherwise, you may need to wait until next fall unless you qualify for a Special Enrollment Period.

Can someone help me compare plans for free?

Yes. Caring Curations offers free consultations to help you compare Medicare options based on your doctors, prescriptions and budget.

Medicare Open Enrollment Doesn’t Have to Be Confusing

Medicare decisions can feel complicated, especially when you’re comparing premiums, benefits, networks, prescriptions, and out-of-pocket costs.

You don’t have to make your decision based on one number or one advertised benefit.

Take the time to understand what each option offers and how it fits your individual circumstances.

Need Help Reviewing Your Medicare Options?

At Caring Curations Medicare and Health Advisors, we provide personalized Medicare guidance to help individuals understand their available coverage options.

We can help you review important factors such as Medicare Advantage, Medicare Supplement Insurance, prescription drug coverage, and additional coverage options.

Whether you’re reviewing your current plan or exploring alternatives for 2027, understanding your options can help you make a more informed decision.

Schedule Your Medicare Consultation

Caring Curations Medicare and Health Advisors

Guidance you trust. Care you can count on.

Phone: 848-257-9344
Email: RamiAA@caringcurations.com

Ready to review your Medicare options? Contact Caring Curations today.