You can enroll in Medicare starting at age 65

Medicare enrollment opens three months before the month you turn 65. If you turn 65 in June, you can sign up starting in March. The enrollment window stays open for three months after your birthday month — so you have a total of seven months to enroll without a penalty.

You do not have to wait until your actual birthday to sign up. You can enroll as soon as the window opens, and your coverage can start as early as the first day of the month you turn 65. Many people sign up two or three months ahead to avoid gaps in coverage.

If you miss this initial window, you can still enroll later, but you may pay a higher monthly premium for the rest of your life. The penalty is 10 percent of the standard Part B premium for each full year you delayed enrollment, and it works the same way for Part D (prescription drug coverage).

Key Takeaways

  • You become may be able to access for Medicare at age 65, and your enrollment window opens three months before that birthday.
  • You have seven months total to enroll without paying a lifetime penalty — three months before, the month of, and three months after your birthday month.
  • If you are still working and have health coverage through your employer, you may be able to delay enrollment without a penalty under certain conditions.
  • You can enroll online through Medicare.gov, by phone at 1-800-MEDICARE, or in person at your local Social Security office.
  • Late enrollment penalties explore to Part B and Part D coverage if you miss your initial window and do not have a may have access to reason for the delay.

What happens if you are still working at 65

If you are covered by a health plan through your current employer or your spouse's employer, you may be able to delay Medicare Part B enrollment without a penalty. This is called creditable coverage, and it means your employer plan is considered as good as or better than Medicare Part B.

You will still need to enroll in Medicare Part A (hospital insurance) at 65 if you are receiving Social Security benefits. Part A is usually free if you or your spouse paid Medicare taxes for at least 10 years. However, you can delay Part B and Part D without penalty as long as you have creditable coverage through work.

When you leave your job or lose the employer coverage, you have eight months to enroll in Part B without a penalty. This is called a Special Enrollment Period. You will need to show proof that you had creditable coverage — your employer's benefits administrator can provide a letter stating this.

Enrolling before you turn 65

You can start the enrollment process up to three months before your birthday month. Most people enroll online at Medicare.gov, which takes about 10 minutes. You will need your Social Security number, date of birth, and information about any current health coverage.

If you prefer to enroll by phone, call 1-800-MEDICARE (1-800-633-4227). Representatives are available Monday through Friday, 8 a.m. to 8 p.m. Eastern time. They can walk you through the process and answer questions about which parts of Medicare you need.

You can also visit your local Social Security office in person. Bring your Social Security card, proof of citizenship or legal residency, and proof of age. An employee there can help you complete the enrollment forms.

Understanding the different parts of Medicare

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 while working. You should enroll in Part A when you turn 65.

Part B covers doctor visits, outpatient care, medical equipment, and preventive services. Part B has a monthly premium that changes each year. You can delay Part B if you have creditable coverage through an employer, but you will pay a penalty if you enroll late without a may have access to reason.

Part D is prescription drug coverage offered by private insurance companies approved by Medicare. You enroll in Part D separately from Parts A and B. If you go without Part D coverage and later enroll, you will pay a penalty based on how long you went without it.

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. You can choose Part C instead of Part B, but you must have Part A first.

What to do if you miss your enrollment window

If you miss your initial seven-month window and do not have a may have access to reason, you can still enroll during the General Enrollment Period, which runs January 1 through March 31 each year. Coverage would start July 1 of that year. However, you will owe a late enrollment penalty.

Some situations allow you to enroll outside the normal windows without a penalty. These include losing employer coverage, moving out of your plan's service area, getting married or divorced, or experiencing a significant drop in income. These are called may have access to Life Events. If one applies to you, contact Medicare to request a Special Enrollment Period.

The penalty for late Part B enrollment is 10 percent of the standard monthly premium for each full year you delayed. If the standard premium is $164.90 and you delayed for two years, your penalty would be about $33 per month for life. Part D penalties work similarly and are based on how long you went without coverage.

Coordinating Medicare with other coverage

If you have Veterans benefits, TRICARE (military family coverage), or coverage through a spouse's plan, you still need to enroll in Medicare at 65. Medicare becomes your primary payer in most cases, and the other coverage fills in gaps. Do not assume your other coverage will handle everything.

If you are receiving Medicaid (state health coverage for low-income people), enrolling in Medicare does not end your Medicaid. You become may be able to access for both programs at the same time, and Medicaid can help pay your Medicare premiums and out-of-pocket costs. Contact your state Medicaid office to make sure your coverage continues.

If you have a Health Savings Account (HSA) through a high-deductible health plan, you cannot contribute to it once you enroll in Medicare Part A. You can still use the money already in the account to pay for may have access to medical expenses, but new contributions are not allowed.

Frequently Asked Questions

Can I enroll in Medicare before I turn 65?

No, you cannot enroll before your initial enrollment window opens, which is three months before the month you turn 65. However, you can prepare by gathering documents and visiting Medicare.gov to review your options. If you have end-stage renal disease or ALS, different rules explore — contact Medicare directly.

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

You still need to enroll in Medicare at 65, even if you have not started taking Social Security benefits. Enrollment in Medicare is separate from claiming Social Security. You can enroll in Medicare and delay Social Security to a later age if you wish.

Do I have to enroll in all parts of Medicare at once?

No. You must enroll in Part A at 65, but you can delay Part B if you have creditable employer coverage. Part D and Part C are optional and separate enrollments. However, delaying Part B or Part D without a may have access to reason will result in a lifetime penalty.

What happens to my coverage if I move to a different state?

Your Medicare coverage works in all 50 states and U.S. territories. However, if you have a Medicare Advantage plan (Part C), you may need to switch plans because not all plans are available in every state. Contact your plan or Medicare to understand your options in your new location.

Can someone help me enroll if I am not comfortable doing it online?

Yes. You can call 1-800-MEDICARE to enroll by phone with a representative, visit your local Social Security office, or ask a trusted family member or friend to help you. Some community organizations and senior centers also offer free help with Medicare enrollment.