Medicare in 2027: Coverage, costs, eligibility and benefits

Medically reviewed by Kelsey Mueckl, RN, BSN

Key takeaways

• Know your enrollment deadlines: Medicare enrollment happens during specific periods throughout the year. Understanding when to sign up—and knowing whether you qualify for an initial, general or special enrollment period—can help you avoid costly late-enrollment penalties and gaps in coverage.
  
• Medicare supports more than healthcare costs: Medicare helps cover many of the services older adults rely on, from check-ups and preventive care to hospital stays and prescription medicine. When used well, it can be an important part of supporting your overall health.
  
• Coordinated care can make healthcare easier to navigate: Managing appointments, medicine and multiple health conditions can feel overwhelming. Having the right support can make it easier to stay on top of your health needs.

If you're feeling overwhelmed by Medicare, you're not alone. Between enrollment periods, coverage options and costs, there can be a lot to sort through. The good news is that a little knowledge can go a long way. This guide covers the Medicare basics for 2027, making it easier to understand your options.

Understanding your Medicare enrollment periods

Medicare enrollment doesn't happen automatically for everyone. Understanding the different enrollment periods and which one applies to you can make the process much easier.

The Initial Enrollment Period (IEP) is the first chance most people have to enroll in Medicare. It lasts 7 months, beginning 3 months before you turn 65 and ending 3 months after your birthday month.

If you miss your IEP, you may be able to sign up during the General Enrollment Period (GEP), which runs from January 1 – March 31 each year. However, delaying enrollment could result in late-enrollment penalties.

Some people qualify for a Special Enrollment Period (SEP). These enrollment opportunities are available after certain life events, such as losing employer health coverage, moving to a new service area or being affected by a qualifying emergency.

Each year during the Annual Election Period  (October 15 – December 7), you can review your coverage and make changes if needed. This is a good opportunity to make sure your plan continues to meet your healthcare and prescription drug needs.

How to enroll in Medicare for 2027

Some people are automatically enrolled in Medicare, especially if they're already receiving Social Security benefits before turning 65. If that's not the case for you, you'll need to sign up on your own.

Getting started is usually straightforward. Before you apply, it can be helpful to gather a few important documents, such as proof of age, citizenship or information about your current health coverage.

Once your application is submitted, you'll receive details about your Medicare coverage and when it begins. In many cases, coverage starts on the first day of the month based on when you enrolled.

Pro tip: Enrolling on time can help you avoid gaps in coverage and make sure your benefits start when you expect them to.

Choosing the right Medicare coverage for you

Medicare offers more than 1 path to coverage. Understanding your options can help you choose a plan that fits your health needs, lifestyle and budget.

Original Medicare, which is provided by the federal government, includes Part A and Part B. It covers hospital care, healthcare provider visits and many preventive services. Some people choose to add a separate Part D prescription drug plan and supplemental insurance to help with costs not covered by Original Medicare.

Medicare Advantage (Part C) plans are offered by private insurance companies approved by Medicare. These plans combine Medicare benefits into a single plan and often include prescription drug coverage and additional benefits.

Prescription drug coverage through Part D can help manage medication costs. Some people also choose supplemental insurance, often called Medigap, to help pay for expenses such as deductibles and coinsurance.

When comparing plans, consider more than monthly premiums. Think about provider access, prescription coverage, out-of-pocket costs and whether the plan supports the type of care experience that's important to you.

Common Medicare enrollment mistakes to avoid

Missing an enrollment deadline is 1 of the most common Medicare mistakes. Signing up late can lead to gaps in coverage and, in some cases, higher costs over time.

It's also important to understand when to enroll in Part B. If you don't qualify for a SEP and delay enrollment, you may have to pay a penalty for as long as you have Medicare.

Another common misconception is assuming enrollment happens automatically. While some people are enrolled through Social Security, others need to sign up on their own. Taking a few minutes to confirm your enrollment status can help you avoid unexpected surprises.

Frequently asked questions

1. Do Medicare premiums change each year?
   • Yes. Medicare premiums, deductibles and other costs may change from year to year. Reviewing your plan annually can help you understand how those changes may affect your healthcare budget.
2. When do I become eligible for Original Medicare?
   • Most people become eligible when they turn 65. You must also be a U.S. citizen or have been a lawful resident of the United States for at least 5 consecutive years
3. What do I need to be eligible for a Medicare Advantage plan or prescription drug plan?
   • To enroll in a Medicare Advantage (Part C) plan or a Medicare prescription drug (Part D) plan, you must be enrolled in Medicare Part A and Part B.
4. Where can I learn more about Medicare?
   • You can find detailed information about Medicare at www.medicare.gov. You can also call 1-800-MEDICARE (1-800-633-4227), available 24 hours a day, 7 days a week, except for some federal holidays.

How CenterWell supports your Medicare journey

Choosing Medicare coverage is an important decision, but it's only one part of staying healthy as you age. At CenterWell®, we offer services designed to support older adults before, during and after Medicare enrollment.

Our senior-focused primary care providers take the time to get to know you, understand your health concerns and create personalized care plans based on your needs. Whether you're new to Medicare or reviewing your coverage options, having a trusted care team can make healthcare decisions feel more manageable.

CenterWell also offers pharmacy services that make managing medicine more convenient. As a mail-order pharmacy, you can order, refill and receive eligible prescriptions delivered directly to your door.

For patients who need additional support following an illness, injury or hospital stay, CenterWell Home Health® provides skilled care at home through a referral from a healthcare provider.

Most importantly, CenterWell takes a whole-person approach to care. By focusing on your physical, mental and social well-being, we can support your health needs long after your Medicare coverage is in place.

Sources:

1. “When does Medicare coverage start?,” Medicare.gov, last accessed Aug. 3, 2026.