When You Turn 65: Medicare Enrollment and Age Requirements

You become may be able to access for Medicare at age 65

Medicare may be able to access begins the month you turn 65, regardless of whether you are still working. If your birthday falls on the first of the month, your coverage starts the previous month. Most people become covered automatically if they are already receiving Social Security benefits, but you must take action to enroll if you are not yet collecting Social Security or if you are a federal employee.

The enrollment process differs depending on your age and work status. If you wait past 65 to sign up without a valid reason, you may face permanent penalties on your premiums. The rules are strict, so understanding your specific situation matters.

Key Takeaways

Medicare coverage begins the month you turn 65, and you must enroll during your Initial Enrollment Period, which runs three months before through three months after your 65th birthday month.
If you are receiving Social Security, Medicare Part A and Part B are usually enrolled automatically, but you should verify this by checking your Social Security account online.
If you delay enrollment past 65 without may have access to for an exception, you will pay a permanent 10 percent surcharge on Part B premiums for as long as you have Medicare.
People who are still working and covered by employer health insurance may have different enrollment rules and should contact their employer's benefits office before turning 65.
You can enroll through Medicare.gov, by phone at 1-800-MEDICARE, or in person at your local Social Security office.

Your Initial Enrollment Period: The three-month window

Your Initial Enrollment Period is a seven-month window: three months before the month you turn 65, the month you turn 65, and three months after. You must enroll during this window to avoid penalties. If your birthday is March 15, your period runs from December through June.

During this window, you can enroll in Part A (hospital insurance) and Part B (medical insurance) without waiting periods or surcharges, provided you meet the basic requirements. If you miss this window, you enter a different enrollment process with higher costs and fewer options.

The exact start date of your coverage depends on when you enroll. If you enroll in the month you turn 65, coverage typically begins the first of that month. If you enroll in the month before, coverage begins the first of your birthday month. Enrolling after your birthday month delays your start date.

Automatic enrollment if you receive Social Security

If you are already collecting Social Security retirement, disability, or survivor benefits, Social Security will enroll you automatically in Medicare Part A and Part B about three months before you turn 65. You do not need to do anything. Your Medicare card will arrive in the mail.

You should still verify that the enrollment went through. Log into your Social Security account at ssa.gov or call Social Security at 1-800-772-1213 to confirm. Check that your name, date of birth, and address are correct on your Medicare card when it arrives.

Automatic enrollment does not include Part D (prescription drug coverage) or Medigap supplemental insurance. You must enroll in these separately if you want them, and you have until December 31 of your Initial Enrollment Period to do so.

If you are still working at 65

If you are employed and your employer offers health insurance, you may not need to enroll in Medicare Part B right away. This is called creditable coverage. You can delay Part B enrollment without penalty if your employer coverage meets Medicare's standards, which most employer plans do.

You must still enroll in Part A (hospital insurance) at 65, even if you have employer coverage. Part A is free for most people and does not conflict with employer plans. Part B is where the choice comes in: you can delay it as long as you remain employed and covered.

When you leave your job or lose employer coverage, you have eight months to enroll in Part B without penalty. This is called your Special Enrollment Period. Contact your employer's benefits office before you turn 65 to understand your specific situation, because the rules vary by plan.

Federal employees and other special cases

Federal employees, railroad retirees, and some other groups have different enrollment rules. Federal employees covered by the Federal Employees Health Benefits Program (FEHB) do not automatically enroll in Medicare and must take action themselves. You can enroll through Medicare.gov or by calling 1-800-MEDICARE.

If you are a federal employee, you can keep your FEHB coverage and enroll in Medicare Part A and Part B at the same time. Some federal employees choose to drop FEHB and use Medicare instead, while others keep both. Your FEHB office can explain how your specific plan works with Medicare.

Railroad retirees should contact the Railroad Retirement Board (RRB) rather than Social Security. The RRB handles enrollment for railroad retirement beneficiaries and follows similar rules to Social Security, but the process is separate.

What happens if you miss your enrollment important date

If you do not enroll during your Initial Enrollment Period and you do not have a may have access to reason for the delay, you will pay a permanent penalty. For Part B, this penalty is 10 percent of the standard premium for each full year you were may be able to access but not enrolled. This surcharge stays on your premium for as long as you have Medicare.

For Part D (prescription drug coverage), the penalty is 1 percent of the national average premium for each month you were not enrolled. Like the Part B penalty, this is permanent.

may have access to reasons for late enrollment without penalty include losing employer coverage, moving out of your plan's service area, or having Medicare wrongly deny your initial claim. If you believe you have a may have access to reason, contact Medicare at 1-800-MEDICARE to discuss your situation.

How to enroll when you turn 65

You have three main ways to enroll: online at Medicare.gov, by phone at 1-800-MEDICARE (1-800-633-4227), or in person at your local Social Security office. Online enrollment through Medicare.gov is usually the fastest. You will need your Social Security number and information about any current health coverage.

If you enroll by phone, a Medicare representative will walk you through the process and answer questions about your specific situation. The wait time varies by time of day and season, but calling early in the morning or mid-week often means shorter waits.

If you prefer in-person help, visit your local Social Security office. You can find the nearest office at ssa.gov or call 1-800-772-1213. Bring your Social Security card, proof of citizenship or legal residency, and information about any current insurance.

Frequently Asked Questions

Can I enroll in Medicare before I turn 65?

Yes, you can enroll starting three months before your 65th birthday. Your coverage will not begin until the month you turn 65 (or the previous month if your birthday is the first of the month), but you can complete the enrollment process early. This is often a good idea because it gives you time to ask questions and avoid last-minute confusion.

What if I am not a U.S. citizen?

You must be a U.S. citizen or a lawful permanent resident who has lived in the United States for at least five years to be covered by Medicare. If you are a lawful permanent resident, bring your green card when you enroll. Undocumented immigrants are not covered by Medicare.

Do I have to enroll in Part B if I do not want it?

You can decline Part B if you have creditable coverage through an employer or spouse's employer. You must still enroll in Part A. If you decline Part B and later want it, you will face a penalty unless you have a may have access to reason for the delay.

What is the difference between turning 65 and becoming may be able to access for Medicare?

Turning 65 makes you may be able to access for Medicare, but may be able to access and enrollment are not the same thing. You become may be able to access at 65, but you must actually enroll to receive coverage. If you are receiving Social Security, enrollment happens automatically, but otherwise you must take action yourself.

Can my spouse enroll in Medicare when I do?

Your spouse has their own Initial Enrollment Period based on their own birthday. They cannot enroll using your enrollment period. However, if your spouse is younger than 65 and covered by your employer insurance, they may be able to stay on that plan until they turn 65 and have their own enrollment period.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.