Medicare is a United States federal health insurance program that provides coverage to individuals who are 65 years of age or older, as well as some people with disabilities. If you are eligible for Medicare, enrolling in the program is an important step to ensure that you have access to quality health care when you need it.

However, enrolling in Medicare can seem like a complex and confusing process. In this article, we’ll walk you through the steps of enrolling in Medicare, including when you should enroll, how to enroll, and what you need to know to make the process as smooth as possible.

When to Enroll in Medicare

There are several enrollment periods for Medicare:

  1. Initial Enrollment Period (IEP) – This period duration is seven months, starting 3 months before your 65th birthday and ending 3 months after it, during which time you can enroll in Original Medicare (Parts A and B).
  2. Annual Enrollment Period (AEP) – This period runs from October 15 to December 7 and is when you can make changes to your Medicare Advantage or Part D Prescription Drug Plan.
  3. General Enrollment Period (GEP) – This period runs from January 1 to March 31 each year and is for people who didn’t enroll in Medicare Part B during their Initial Enrollment Period.
  4. Special Enrollment Period (SEP) – This period is for people who are already enrolled in Medicare and have a specific life event, such as losing employer coverage, moving to a new area, or gaining new eligibility for Medicare.
  5. Open Enrollment Period (OEP) – This period is for people enrolled in Medicare Advantage plans and runs from January 1 to March 31 each year. During this time, you can switch from your Medicare Advantage plan to Original Medicare, enroll in a new Medicare Advantage plan, or switch from one Medicare Advantage plan to another.

It is important to enroll in Medicare during your Initial enrollment period (IEP), which begins three months before you turn 65 years old, includes the month you turn 65, and ends three months after your 65th birthday. During this time, you have a guaranteed right to enroll in Medicare and cannot be turned down due to any pre-existing conditions.

If you miss your IEP, you can still enroll in Medicare during the General Enrollment Period, which runs from January 1st to March 31st each year. However, your coverage may be delayed, and you may be exposed to the late enrollment penalty fee for as long as you have the policy.

How to Enroll in Medicare

There are several ways to enroll in Medicare, including online, by phone, or in person at a local Social Security office. Here is a step-by-step guide to help you enroll in Medicare:

  1. Determine your eligibility for Medicare: To enroll in Medicare, you must be a U.S. citizen or permanent resident who is at least 65 years old, or under 65 years old and receiving Social Security disability benefits.
  2. Gather the necessary information: Before enrolling in Medicare, you will need to provide your Social Security number, proof of citizenship or legal residency, and your birthdate.
  3. Choose your Medicare coverage options: Medicare offers two main types of coverage: Original Medicare (Parts A and B) and Medicare Advantage (Part C). Original Medicare covers hospital stays, doctor visits, and some other medical services, while Medicare Advantage plans offer an alternative way to receive your Medicare benefits, typically through private health insurance plans.
  4. Enroll online: The easiest way to enroll in Medicare is online through the Social Security Administration’s website. Simply log in to your account and follow the steps to enroll.
  5. Enroll by phone: If you prefer to enroll by phone, you can call the Social Security Administration at 1-800-772-1213 (TTY 1-800-325-0778). A representative will assist you with the enrollment process.
  6. Enroll in person: If you prefer to enroll in person, you can visit a local Social Security office. You can find your nearest office by using the Social Security Administration’s office locator tool.

What to Expect After Enrolling in Medicare

Once you have enrolled in Medicare, you will receive your Medicare card in the mail. Your card will include your Medicare number, which is used to identify you in the Medicare system. You will also receive a Welcome to Medicare packet, which includes information about your coverage, as well as any additional information you may need to make the most of your benefits.

In addition to your Medicare card, you may also receive additional materials, such as enrollment forms for a Medicare Advantage plan or a Medicare Part D prescription drug plan. You may also receive information about enrolling in a Medicare Supplement (Medigap) plan, which helps to fill the gaps in Original Medicare coverage.


Enrolling in Medicare is an important step for seniors and individuals with disabilities. Understanding the different parts of Medicare, including Original Medicare (Part A and Part B), Medicare Advantage plans (Part C), and Prescription Drug coverage (Part D) will help you make informed decisions about your healthcare coverage.

It’s important to remember that there are specific enrollment periods for each type of Medicare coverage and failing to enroll during the designated time period may result in late enrollment penalties.

If you’re already receiving Social Security benefits, you will automatically be enrolled in Original Medicare when you turn 65. However, if you’re not yet receiving Social Security benefits, you will need to take action to enroll in Medicare.

You can enroll in Medicare by visiting the Social Security Administration’s website, calling the Medicare hotline, or visiting a local Social Security office.

If you have any questions or need assistance enrolling in Medicare, don’t hesitate to reach out to the Social Security Administration or a Medicare counselor for help. With the right coverage, you can have peace of mind knowing that your healthcare needs are taken care of.

Medicare Health Advisor at Medigap Medicare Insurance | Website | + posts

Dr. Susan Johnson is a Medicare Health Advisor with extensive knowledge and experience in health insurance, particularly Medicare. She has spent over 15 years working in various healthcare settings, including hospitals, clinics, and private practices.

As a Medicare Health Advisor, Dr. Johnson specializes in helping people navigate the complex world of health insurance, including original Medicare, Medicare Advantage, Medicare supplements, and Medicare Part D. She is committed to providing personalized guidance to her clients, helping them make informed decisions about their coverage and reduce their healthcare costs.