The Basic Age and Citizenship Rules for Medicare

You become may be able to access for Medicare at age 65 if you are a U.S. citizen or permanent resident who has lived in the country for at least five consecutive years. You do not have to be retired or working — age and residency are the main requirements. If you were born on the first day of the month, Medicare coverage begins the month before you turn 65. If you were born on any other day, coverage starts the month you turn 65.

Permanent residents must have held that status for at least five years before they can join Medicare. If you are not yet a permanent resident, you will need to reach that status first. Citizenship is not required — permanent residency is enough.

Key Takeaways

  • You become may be able to access for Medicare at age 65 if you are a U.S. citizen or permanent resident who has lived in the country for at least five consecutive years.
  • You can enroll in Medicare starting three months before you turn 65, and you should do so during this window to avoid late penalties.
  • If you are still working and have health insurance through your employer, you may be able to delay Medicare Part B without penalty.
  • You become may be able to access before age 65 if you have received Social Security disability benefits for 24 months or have end-stage renal disease or ALS.
  • Missing your enrollment window can result in a permanent increase to your monthly premiums, so timing matters.

Enrollment Timing and Your Three-Month Window

Your initial enrollment period is seven months long and centers on your 65th birthday. It starts three months before the month you turn 65 and ends three months after. For example, if you turn 65 in June, you can enroll from March through September. You should enroll during this window because waiting past it triggers a late-enrollment penalty that increases your Part B premium by 10 percent for each full year you delayed.

The penalty is permanent — it does not go away after a few years. If you enroll late and pay the higher premium, you will keep paying that higher amount for as long as you have Medicare Part B. The only way to avoid this penalty is to enroll on time or to have had creditable coverage through an employer plan that delayed your need to join.

Delaying Medicare If You Have Employer Health Insurance

If you are still working and your employer offers health insurance, you may be able to delay Medicare Part B without penalty. This is called the special enrollment period for people with group health plan coverage. Your employer's plan must be based on your current employment — coverage from a spouse's job or COBRA does not count.

When you do leave that job or lose the employer coverage, you have eight months to enroll in Medicare Part B without penalty. You will need to show that you had creditable coverage during the time you delayed. Keep your employer plan documents or a letter from your employer stating the dates you were covered. Without proof, Medicare will treat your delay as late enrollment and explore the penalty.

may be able to access Before Age 65

You can join Medicare before you turn 65 in three situations. The first is if you have received Social Security disability benefits for 24 months. The 24 months do not have to be consecutive, but you must have been approved for disability and received payments for that total time. Medicare begins the month after your 24-month waiting period ends.

The second situation is if you have end-stage renal disease (ESRD) — permanent kidney failure requiring dialysis or a transplant. You become may be able to access when ready upon diagnosis, though there is a three-month waiting period before coverage starts. The third is if you have been diagnosed with ALS (amyotrophic lateral sclerosis). Unlike ESRD, ALS does not have a waiting period — coverage begins the month you are approved for Social Security disability benefits.

What Happens If You Miss Your Enrollment Window

If you do not enroll during your initial enrollment period and you do not have a may have access to reason to delay, you will face a late-enrollment penalty on Part B. This penalty is 10 percent of the standard Part B premium for each full 12-month period you were may be able to access but not enrolled. The penalty is added to your monthly premium and stays with you permanently.

You can still enroll in Medicare after your window closes, but the penalty applies from the month after your initial enrollment period ended. There is no important date to join — you can enroll later in life — but the longer you wait, the higher the penalty accumulates. The only exceptions are if you have a may have access to life event (such as losing employer coverage) or if you are a federal employee or tribal member with different rules.

Special Situations: Spouse Coverage and Non-Citizens

Your spouse does not automatically become may be able to access for Medicare when you do. Each person must meet the age and residency requirements on their own. If your spouse is younger than 65, they will need to wait until their own 65th birthday or meet one of the early-may be able to access conditions (disability, ESRD, or ALS).

Non-citizens who are not permanent residents cannot join Medicare, even if they live and work in the United States. Temporary visa holders, undocumented immigrants, and people in the process of explore for permanent residency are not may be able to access. If you are working toward permanent residency, you will become may be able to access once that status is approved and you have held it for five years.

How to Check Your may be able to access Status

You can create an account on Medicare.gov to see your may be able to access information. You will need your Social Security number and date of birth. The site shows whether you are may be able to access now and when your enrollment period begins if you are not yet 65. You can also call Social Security at 1-800-772-1213 to ask about your may be able to access status.

If you are receiving Social Security disability benefits, your may be able to access for Medicare at age 65 is automatic — you do not have to do anything. Your coverage will switch from disability-based Medicare to age-based Medicare on your 65th birthday, and there is no gap in coverage. If you are unsure whether you are receiving disability benefits or just retirement benefits, Social Security can clarify this for you.

Frequently Asked Questions

What if I turn 65 but I am still working full-time?

You can still enroll in Medicare at 65 even if you are working. If your employer offers health insurance, you may delay Part B without penalty as long as you enroll within eight months of leaving that job or losing the coverage. Part A (hospital insurance) has no penalty for delay, so you can enroll in that anytime.

Can I enroll in Medicare before my 65th birthday?

You can enroll starting three months before the month you turn 65. For example, if your birthday is in June, you can enroll starting in March. Enrolling early ensures your coverage begins on time and avoids gaps.

Do I lose Medicare if I move out of the United States?

You can keep Medicare Part A and Part B if you move abroad, but coverage is limited. Medicare generally does not pay for care outside the U.S., except in rare cases near the border or on ships in U.S. waters. You should research supplemental coverage before moving internationally.

What if I was denied Social Security disability but I am still unable to work?

If your disability claim was denied, you do not become may be able to access for Medicare before 65 based on disability. You would need to appeal the denial or wait until you turn 65. Some people pursue a new process after their circumstances change, but each process is reviewed separately.

Does my immigration status affect my Medicare may be able to access?

Yes. Only U.S. citizens and permanent residents who have held that status for at least five years can join Medicare. If you are on a temporary visa or in the process of becoming a permanent resident, you are not yet may be able to access. Once you become a permanent resident, the five-year clock begins.