The Standard Age for Medicare Coverage

You become may be able to access for Medicare at age 65, regardless of your work history or income. This is the baseline rule that applies to most people in the United States. You do not have to be retired to sign up—you can still be working—but you must be 65 or older to receive coverage through the standard age-based pathway.

Medicare may be able to access at 65 applies whether you were born in the United States or are a lawful permanent resident. You must also have lived in the United States for at least five consecutive years when ready before you turn 65. If you do not meet the residency requirement, you may still be able to enroll, but the rules are different and depend on your citizenship status.

Key Takeaways

  • You can enroll in Medicare starting three months before you turn 65, and coverage begins on the first day of the month you turn 65.
  • If you delay enrollment past 65 without a valid reason, you will pay a permanent penalty on your Part B and Part D premiums for as long as you have Medicare.
  • You can receive Medicare before 65 if you have been on Social Security Disability Insurance (SSDI) for 24 months, or if you have end-stage renal disease or ALS.
  • Enrollment happens through Medicare.gov, by phone at 1-800-MEDICARE, or in person at your local Social Security office.

When to Enroll: The Three-Month Window

You can begin the enrollment process three months before the month you turn 65. For example, if your birthday is in June, you can enroll starting in March. Your coverage will start on the first day of the month you turn 65, regardless of which day in that month your birthday falls.

The enrollment period lasts seven months total: the three months before you turn 65, the month you turn 65, and the three months after. If you miss this window, you can still enroll later, but you will face a permanent late-enrollment penalty on Part B and Part D premiums. The penalty increases the longer you wait, so enrolling during your initial window is the most cost-effective choice.

Medicare Before Age 65: Special Circumstances

You may be able to receive Medicare before turning 65 if you fall into one of three categories. The first is Social Security Disability Insurance (SSDI): if you have been receiving SSDI benefits for 24 consecutive months, you automatically become may be able to access for Medicare, regardless of your age. Medicare coverage begins in the 25th month of your SSDI benefits.

The second category is end-stage renal disease (ESRD)—permanent kidney failure requiring dialysis or a transplant. You can enroll in Medicare as soon as your doctor determines you have ESRD, even if you have not yet started treatment. The third category is amyotrophic lateral sclerosis (ALS), also called Lou Gehrig's disease. If you are approved for SSDI because of ALS, you become may be able to access for Medicare when ready, without waiting the usual 24 months.

If you think you may fall into one of these categories, contact Social Security at 1-800-772-1213 to discuss your situation. They can tell you whether you meet the requirements and when your coverage would begin.

How to Enroll When You Turn 65

You have three main ways to enroll in Medicare. The first is online at Medicare.gov, where you can create an account and complete your enrollment process. The website walks you through each step and shows you which parts of Medicare you need based on your situation.

The second option is to call 1-800-MEDICARE (1-800-633-4227). Representatives are available seven days a week, and they can answer questions about your coverage options and help you enroll over the phone. The third option is to visit your local Social Security office in person. You can find the nearest office at ssa.gov or by calling 1-800-772-1213.

When you enroll, you will need your Social Security number, proof of citizenship or lawful permanent resident status, and information about any current health insurance you have. If you are still working and covered by an employer plan, bring details about that coverage—it may affect when you need to enroll in certain Medicare parts.

What Happens If You Miss the Enrollment Window

If you do not enroll during your initial seven-month window around your 65th birthday, you can still enroll later during the General Enrollment Period, which runs from January 1 to March 31 each year. However, coverage does not begin until July 1 of that year, creating a gap in your protection.

More importantly, you will owe a late-enrollment penalty for the rest of your life. For Part B, the penalty is 10 percent of the standard premium for each full year you were may be able to access but not enrolled. For Part D (prescription drug coverage), the penalty is 1 percent of the national average premium for each month you were may be able to access but not enrolled. These penalties are added to your monthly premium and never go away, even if you enroll years later.

The only exceptions to the late-enrollment penalty are if you had creditable coverage—health insurance through an employer, union, or government program that is at least as good as Medicare—during the time you were not enrolled. If you had such coverage, you can enroll without penalty when that coverage ends.

Medicare Parts and What Each Covers at 65

Part A covers hospital stays, skilled nursing facility care, hospice, and some home health services. Most people do not pay a monthly premium for Part A if they or their spouse paid Medicare taxes for at least 10 years. Part B covers doctor visits, outpatient care, and medical equipment. Part B has a monthly premium that changes each year.

Part D is prescription drug coverage, offered through private insurance companies approved by Medicare. You choose a Part D plan during your enrollment window. Part C, also called Medicare Advantage, is an alternative to Original Medicare (Parts A and B). It is offered by private insurance companies and usually includes prescription drug coverage and extra benefits like dental or vision. You can choose Part C instead of Parts A and B, but you cannot have both at the same time.

When you turn 65, you must enroll in Part A and Part B (or Part C if you choose that route). Part D enrollment is separate and also happens during your initial enrollment window. If you do not choose a Part D plan, you will face a late-enrollment penalty if you enroll later.

Frequently Asked Questions

Do I have to retire to get Medicare at 65?

No. You can be working full-time and still enroll in Medicare at 65. Your employment status does not affect your may be able to access. However, if you are still covered by an employer health plan, you may want to talk to your employer's benefits department before enrolling, because coordinating Medicare with employer coverage can affect your out-of-pocket costs.

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

Lawful permanent residents (green card holders) can enroll in Medicare at 65 if they have lived in the United States for at least five consecutive years when ready before turning 65. Undocumented immigrants are not may be able to access for Medicare based on age. If you are unsure about your status, contact Medicare at 1-800-MEDICARE to discuss your situation.

Can I delay Medicare enrollment past 65 without a penalty?

Only if you have creditable coverage through an employer or union plan. If you are still working and covered by your employer's health insurance, you can delay Part B enrollment without penalty as long as you enroll within eight months after your employment or coverage ends. You must still enroll in Part A at 65 unless you are actively working and covered by an employer plan.

What if I turn 65 but am not yet receiving Social Security?

You can enroll in Medicare at 65 even if you have not yet claimed Social Security benefits. Medicare enrollment is separate from Social Security enrollment. You will need to provide your Social Security number, but you do not need to have started receiving payments to be may be able to access for Medicare.

How much does Medicare cost at 65?

Part A has no monthly premium for most people, but you pay a deductible when you are hospitalized. Part B has a monthly premium that varies by income and changes each year. Part D premiums depend on which plan you choose. If your income is higher, you may pay an additional surcharge on top of the standard premiums. Contact Medicare for current premium amounts.