How do I enroll in Medicare?

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How do I enroll in Medicare?

What you need to know about enrolling in Original Medicare, Advantage plans and the supplemental coverage that's available

  • March 5, 2015


With Original Medicare (Medicare Part A and B), enrollment can be as easy as opening your mail and putting your Medicare card in your wallet. For some other plans, you’ll have to do a bit more to enroll, but it’s important to thoroughly research your options prior to enrolling.

Enrolling in Original Medicare

When it comes to Original Medicare, enrollment could be a piece of cake. If you’re already receiving Social Security or Railroad Retirement Board benefits and you’re a U.S. resident, the government automatically enrolls you in both Part A and Part B at age 65. Three months prior to your 65th birthday, your Medicare card will arrive in the mail with instructions.

At this point, you’ll actually have the option to turn down Medicare Part B, but you probably won’t want to do that unless you have another means of coverage for Part B expenses.

(You may, for instance, be receiving coverage from your spouse’s employer-sponsored insurance.) If you decide to not enroll in Part B, but plan to enroll at a later date, you will pay a higher premium – 10 percent higher for each year you could have enrolled, but did not.

If you are turning 65, but you’re not yet receiving Social Security or railroad retirement benefits, you won’t be automatically enrolled in Original Medicare. Instead, you’ll be able to enroll during a seven-month open enrollment period that begins three months prior to the month you turn 65, and includes the month you turn 65 as well as the three following months. So if you’ll be 65 on July 14, your open enrollment period will be April, May, June, July, August, September, and October.

If you’ll be eligible for Social Security at age 65, you’ll enroll at a local Social Security office or by mailing a signed and dated letter with your name, Social Security number and the date you’d like to be enroll to Social Security.

If you’ll be eligible for railroad retirement benefits, you can enroll by contacting your Railroad Retirement Board field office.

Enrolling in Medicare Advantage

To join a Medicare Advantage Plan, you will need to have or be eligible for Original Medicare (Part A and Part B) coverage and live in an area where an Advantage Plan is offered. (A plan may be offered in a state, but not in every county in that state.)

You’re also limited as to when you can enroll in a Medicare Advantage plan. You can enroll when you’re first eligible for Medicare. If you have Social Security Disability Insurance, you can enroll in the 25th month of your disability or during the three months before or after that month. Each year, you’ll have an option to switch to a different Medicare Advantage plan (or switch from Original Medicare to a Medicare Advantage plan) during the open enrollment period that runs from October 15 to December 7, with coverage effective January 1.

If you plan to enroll through a carrier’s Web site, you may want to compare Medicare Advantage Plans first at Medicare’s site. Often, you can also get enrollment information at seminars hosted by the plan carriers.

Since Medicare Advantage Plans generally cover most of your Medicare-related expenses – including, with most Advantage plans, prescription drug coverage – you may not need any additional coverage beyond the Medicare Advantage plan (although you’ll still need long term care insurance to guard against future costs, because long term care isn’t covered by Original Medicare or Medicare Advantage). Instead of a regular Medicare ID card, you’ll simply use the insurance card issued by the private carrier when you obtain medical treatment.

If you decide to switch to a different Advantage plan during open enrollment (October 15 to December 7), it’s easy. When you switch to the new plan, your existing plan will disenroll you with no lapse in coverage.

Enrolling in Medicare Part D

Medicare Part D covers prescription drugs. You can add a stand-alone prescription drug plan (PDP) to augment your Medicare A and B, or you can choose a Medicare Advantage plan that provides all of the benefits of Medicare A and B, plus prescription drugs and often other benefits as well.

You’re first eligible to enroll in Part D when you’re first eligible for Medicare. When you apply, you will enroll through a private plan and must enroll during a seven-month period that starts three months prior to the month that you reach age 65. If you don’t enroll during this period, you may pay a late-enrollment penalty that will raise your Part D premium when you do decide to purchase coverage.

If you’re Medicare eligible because you’re disabled AND you’ve reached age 65, you can enroll in a Part D plan, switch Part D plans, or drop your Part D plan during this seven-month period.

If you’re newly eligible because you’re disabled, you can enroll starting 21 months after you began receiving RRB or Social Security benefits and have through the 27th month to enroll. Your Part D coverage will start at the beginning of your 25th month of receiving RRB or Social Security benefits.

If you don’t have Part A and enroll in Part B during the Part B General Enrollment period, you can enroll in Part D between April 1 and June 30. Or, if you have Part A coverage and then enroll in Part B during the Part B General Enrollment Period, you can enroll in Part D between April 1 and June 30.

And if, later on, you want to change to a different Part D plan, you can do that during Medicare’s Open Enrollment period that runs from October 15 to December 7 each year.

After you’ve chosen from the various PDP offerings, you can enroll by:

Once you apply for Plan D, it generally takes five weeks for your membership card to arrival. During that time, if you need prescription medications, most pharmacies will accept the initial letter you received from Medicare acknowledging your upcoming membership, or an enrollment confirmation number.

Enrolling in Medigap

It’s essential that you learn about enrolling in Medigap well in advance of your application. During your initial enrollment period (the six months starting with the month you turn 65) you can’t be denied Medigap coverage or be charged more for the coverage because of a past medical condition.

If you’re under 65 and eligible for Medicare because of a disability, there are 31 states (as of November 2014) that provide some sort of guaranteed issue period during which you can purchase a Medigap plan, but in some of those states, the carriers can charge additional premiums for people under 65.

If you miss your enrollment period, you may still be able to buy a policy, but a carrier may charge you more for the policy. Or worse, a carrier could decline to issue a Medigap policy entirely.

To find out about Medigap policies in your state, contact your State Department of Insurance or your State Health Insurance Assistance Program.