You become may be able to access for Medicare at 65, or earlier if you have a disability or end-stage renal disease

Medicare may be able to access is tied to age, disability status, or specific medical conditions — not to your income or work history, though work history does affect what you pay. Most people become may be able to access at 65. If you are younger, you may still be covered if you have been receiving Social Security disability benefits for 24 months, or if you have end-stage renal disease (permanent kidney failure requiring dialysis or transplant) or ALS (amyotrophic lateral sclerosis).

The month you turn 65, you enter your Initial Enrollment Period, a seven-month window that starts three months before your birthday month and ends three months after. During this window, you can sign up for Medicare Part A (hospital insurance) and Part B (medical insurance) without penalty. If you miss this window and do not have other coverage, you will pay a permanent surcharge on your premiums for as long as you have Medicare.

Key Takeaways

  • You are may be able to access for Medicare the month you turn 65, and you have seven months to sign up without penalty — three months before your birthday month through three months after.
  • If you are already receiving Social Security benefits, Medicare will be offered to you automatically; if not, you must sign up yourself through Social Security or Medicare.gov.
  • Signing up late costs you a permanent 10% increase in Part B premiums for each year you delayed, plus a 1% increase in Part D (prescription drug) premiums for each month you were uninsured.
  • You can sign up online at Medicare.gov, by phone at 1-800-MEDICARE, or in person at your local Social Security office.
  • If you are still working and have employer health insurance, you may be able to delay Part B enrollment without penalty, but you must file a form with Medicare to prove it.

How age 65 triggers your enrollment window

Your Initial Enrollment Period is automatic and lasts exactly seven months. It begins on the first day of the third month before you turn 65 and ends on the last day of the third month after your birthday month. For example, if you turn 65 in June, your enrollment period runs from March 1 through September 30.

During these seven months, you can sign up for Part A and Part B with no waiting period and no premium penalty. Part A (hospital insurance) is usually free if you or your spouse paid Medicare taxes for at least 10 years. Part B (medical insurance covering doctor visits and outpatient care) costs a monthly premium that varies by income; in 2024, the standard premium is $174.70 per month, though higher earners pay more.

If you do not sign up during your Initial Enrollment Period and you do not have other may have access to coverage, you will owe a late enrollment penalty. For Part B, this is a permanent 10% increase in your monthly premium for each full year you delayed. For Part D (prescription drug coverage), it is 1% of the national base premium for each month you went without it. These penalties stay with you for life.

Automatic enrollment if you receive Social Security

If you are already receiving Social Security retirement, spousal, or survivor benefits before you turn 65, Medicare will be sent to you automatically about three months before your 65th birthday. You do not have to do anything. Your Medicare card will arrive in the mail, and coverage begins the month you turn 65.

If you are not yet receiving Social Security, you must sign up for Medicare yourself. You can do this online at Medicare.gov, by calling 1-800-MEDICARE (1-800-633-4227), or by visiting your local Social Security office in person. Have your Social Security number, birth certificate, and proof of citizenship or legal residency ready.

Signing up before 65 if you have a disability

If you are under 65 and have been receiving Social Security Disability Insurance (SSDI) for 24 months, you become may be able to access for Medicare automatically. Your coverage begins in the 25th month of your disability benefits, with no enrollment action needed on your part.

If you receive Supplemental Security Income (SSI) because of disability or blindness, you may be covered by Medicaid instead of Medicare, depending on your state. Contact your state Medicaid office or call 1-800-MEDICARE to find out which program covers you.

If you have end-stage renal disease or ALS, you can sign up for Medicare right away without waiting for age 65. Call 1-800-MEDICARE or visit Medicare.gov to start the process. Your coverage can begin as early as the month your condition is diagnosed, though the exact start date depends on when you complete your enrollment.

What happens if you are still working at 65

If you are still employed and your employer offers health insurance, you may be able to delay Part B enrollment without penalty — but only if your employer has 20 or more employees. You must sign up for Part A (hospital insurance), but you can put off Part B as long as you are actively working and covered by your employer plan.

To avoid the Part B late penalty, you must file a form called the process for Enrollment in Part B (CMS-40B) with Medicare before your Initial Enrollment Period ends, stating that you have employer coverage. Keep a copy for your records. When you leave your job or your employer coverage ends, you have eight months to sign up for Part B without penalty — this is called your Special Enrollment Period.

If you do not file this form and you miss your Initial Enrollment Period, you will owe the permanent Part B penalty even if you had employer coverage the whole time. The form protects you, so file it early.

Enrollment important date and what they mean

Your Initial Enrollment Period is seven months and cannot be extended. If you miss it, you enter what Medicare calls General Enrollment Period, which runs January 1 through March 31 each year. During General Enrollment, you can sign up for Part A and Part B, but you will owe the late penalty unless you have a may have access to reason for the delay.

A may have access to reason includes having other health coverage (such as employer insurance or TRICARE) that ended, or moving to a new state. If you believe you have a may have access to reason, call 1-800-MEDICARE and ask about a Special Enrollment Period. You will need to provide proof — a letter from your employer, a copy of your coverage termination notice, or a lease showing your move date.

Part D (prescription drug coverage) has its own enrollment window: October 15 through December 7 each year. If you do not sign up during your Initial Enrollment Period or during this annual window, you will owe a 1% monthly penalty on top of your premium for each month you were uninsured. This penalty also lasts for life.

How to sign up for Medicare

You have three ways to sign up: online, by phone, or in person. The fastest is online at Medicare.gov. Go to the "Sign Up for Medicare" section, enter your information, and you will get a decision the same day in most cases. You will need your Social Security number, birth date, and citizenship or legal residency proof.

By phone, call 1-800-MEDICARE (1-800-633-4227). The line is open 24 hours a day, seven days a week. A representative will walk you through the process and can answer questions about your specific situation. The call usually takes 15 to 20 minutes.

In person, visit your local Social Security office. You can find the nearest one at ssa.gov or by calling 1-800-772-1213. Bring your Social Security card, birth certificate, and proof of citizenship or legal residency. Walk-ins are welcome, though you may wait, so consider calling ahead to schedule an appointment.

Frequently Asked Questions

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

You must sign up for Medicare yourself, even if you have not claimed Social Security retirement benefits yet. You can sign up for Medicare at 65 and delay Social Security to a later age if you wish — the two are separate. Sign up at Medicare.gov, by phone at 1-800-MEDICARE, or at your local Social Security office.

Can I sign up for Medicare before I turn 65?

No, unless you have a disability, end-stage renal disease, or ALS. If you have one of these conditions, you can sign up before 65. Otherwise, your enrollment window opens three months before your 65th birthday month. You cannot sign up earlier, even if you want to.

What if I miss my Initial Enrollment Period?

You can still sign up during General Enrollment (January 1 through March 31 each year), but you will owe a permanent 10% increase in your Part B premium for each year you delayed, unless you have a may have access to reason for the delay. Call 1-800-MEDICARE to ask about a Special Enrollment Period if you think you may have access to.

Do I have to sign up for Part B if I have employer insurance?

You must sign up for Part A, but you can delay Part B if your employer has 20 or more employees and you are actively working. File form CMS-40B with Medicare before your Initial Enrollment Period ends to protect yourself from the late penalty. When you leave your job, you have eight months to sign up for Part B without penalty.

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

You must be a U.S. citizen or a lawful permanent resident (green card holder) who has lived in the United States for at least five years to be may be able to access for Medicare. If you are not sure about your status, call 1-800-MEDICARE and ask. You will need to provide proof of legal residency when you sign up.