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How to Enroll in Medicare Part A and B: Step-by-Step Guide

How to Enroll in Medicare Part A and B: Step-by-Step Guide

Table of Contents

Enrolling in Medicare Part A and B is easier than you might think, but timing matters. If you’re turning 65 or already eligible, you have a few straightforward ways to sign up. You can do most of it online, and the process typically takes just a few minutes.

Let’s walk through exactly what you need to do and when to do it.

Who Can Enroll in Medicare Part A and B?

You’re eligible for Medicare Part A and B if you’re 65 years old or older. It’s that simple. Age is the main gate, and once you hit 65, you can apply.

Related: How Medicare Part B Works Explained: A Simple Guide

Related: How to Apply for Medicare in Florida: Step-by-Step Guide

Related: When Can I Enroll in Medicare Part A? 2026 Guide

If you’ve been receiving Social Security benefits already, you might be automatically enrolled. But don’t assume that happened. It’s worth checking your status to be sure.

There’s one important exception: if you’re still working and have health coverage through your employer or spouse’s employer, you can delay enrolling in Part B without penalty. More on that in a moment.

The Fastest Way to Enroll: Online Through Social Security

One method to enroll in Medicare Part A and B is through the Social Security website. You can apply entirely online from home.

Here’s what to do:

  • Visit the Social Security website
  • Log into your account (or create one if you don’t have it)
  • Find the Medicare application option
  • Fill out the basic information: your name, date of birth, contact details
  • Review and submit your application

The entire process usually takes less than 10 minutes, and you can do it at any time of day or night.

If you have questions about your eligibility and timing, EZ Access Insurance can provide information about the enrollment process.

EZ Access Insurance

Enrollment by Phone Through the Social Security Administration

If you prefer talking to someone or don’t feel comfortable with the online process, you can call the Social Security Administration directly.

Dial (TTY for those who are deaf or hard of hearing).

A representative will walk you through the enrollment process over the phone. They’ll ask for the same information you’d enter online, and you can ask questions as you go.

Wait times can vary, especially around Medicare enrollment season. If you call early in the morning or mid-week, you may experience shorter wait times.

Enrolling in Specific Medicare Plans

how to enroll in medicare part a and b

Enrolling in Part A and B through Social Security is just the first step. After you’re approved, you’ll need to choose a specific Medicare plan.

Medicare offers several plan types, and you can select one based on your preferences for coverage options, costs, and provider networks.

Here’s how to review your plan options:

  • Visit Medicare.gov/plan-compare to see all plans available in your area
  • Compare coverage options, costs, and provider networks
  • Select the plan that fits your situation
  • Contact the plan provider directly to finalize your enrollment

You can also enroll in a plan directly through the Medicare website during the open enrollment period (typically October 15 to December 7 each year).

If the plan comparison and selection feel overwhelming, schedule a consultation with someone who specializes in Medicare coverage. They can provide information about plan options available to you.

Important Enrollment Deadlines and Timing

Missing a deadline can affect your coverage. Here’s what you need to know:

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Initial Enrollment Period (IEP): This is a 7-month window centered around your 65th birthday. You can enroll starting 3 months before your birthday month and ending 3 months after. If you enroll during this window, your coverage typically starts the first day of your birth month (or the next month, depending on when you apply).

Late enrollment penalties: If you don’t sign up for Part B during your IEP and you don’t have qualifying employer coverage, you may pay a penalty for each month you were eligible but not enrolled. This penalty may be added to your Part B premium. Timing matters here.

Annual Enrollment Period (AEP): Each fall (October 15 to December 7), you can switch to a different Medicare plan or make changes to your existing coverage. This is your opportunity to review your plan each year.

When You Can Delay Part B Enrollment

Here’s an important exception: if you’re still working and covered by an employer group health plan, you can delay enrolling in Part B without a penalty.

To qualify, your employer must have 20 or more employees. Once you stop working or lose that coverage, you’ll have 8 months to enroll in Part B without penalty.

This means you don’t have to pay Part B premiums while you’re already covered through work. Just make sure you enroll within that 8-month window after your coverage ends.

What You’ll Need to Get Started

how to enroll in medicare part a and b

Keep these documents handy when you enroll:

  • Your Social Security number
  • Birth date and place of birth
  • Current contact information (phone, email, address)
  • Information about any current health coverage
  • Bank account details (if setting up automatic premium payments)

You don’t need to have all of this memorized. Most of it is information you’ll know off the top of your head.

After You Enroll: What Comes Next

Once your application is approved, you’ll receive a Medicare card in the mail. This usually arrives a few weeks after your enrollment becomes effective.

Your coverage typically becomes effective on January 1 of the following year if you enroll between October and December. If you enroll outside that window (using your IEP), your coverage start date varies based on when you applied.

When your card arrives, check it carefully for accuracy. Make sure your name, date of birth, and Medicare number are all correct. If something’s wrong, contact Social Security right away to fix it.

Need help understanding what happens after enrollment or reviewing your coverage options? EZ Access Insurance can provide information about the enrollment process.

Get Help With Your Medicare Enrollment

If you have questions or feel stuck at any point, you don’t have to figure this out alone.

You can call Medicare directly. Representatives are available year-round to answer enrollment questions, and TTY services are available for those who are deaf or hard of hearing.

You can also fill out this form to get connected with EZ Access Insurance directly, and they’ll reach out to provide information about your situation.

Common Questions About Medicare Part A and B Enrollment

Can I enroll in Part A without Part B?

Yes. You can enroll in Part A alone if Part B isn’t the right fit for your situation. This might happen if you’re still covered by an employer plan and want to delay Part B. When you apply, specify that you want Part A only, and Social Security will process it that way.

What if I miss my Initial Enrollment Period?

You can still enroll, but you may face late penalties on your Part B premium. These penalties may be added to your Part B premium. The lesson: don’t skip your IEP if you can help it. If you missed it, talk to someone at Social Security or contact EZ Access Insurance to understand your options and any penalties that may apply.

Is there a fee to enroll in Medicare Part A and B?

Enrollment itself is free. However, Part B has a monthly premium that comes out of your Social Security check or is billed separately. Part A has no premium for most people who’ve paid Medicare taxes while working. The actual costs depend on your income and other factors. Social Security or your Medicare plan can give you exact numbers for your situation.

When does my coverage start after I enroll?

Usually January 1 of the following year if you enroll between October and December. If you enroll during your Initial Enrollment Period at other times of the year, your start date varies. Social Security will tell you the exact effective date when your application is approved.

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