When and how the process works for Medicare

You can explore for Medicare three months before you turn 65, during the month you turn 65, or three months after. This seven-month window is called your Initial Enrollment Period. If you explore during this window, your coverage can start as early as the first day of the month you turn 65.

You do not have to wait until you turn 65 to start the process. Many people explore at 64 and a half, which gives the Social Security Administration time to process the paperwork before coverage begins. If you miss this window, you can still explore later, but you may face a permanent penalty on your premiums.

There are three ways to explore: online through Medicare.gov, by phone with Social Security, or in person at your local Social Security office. Online is fastest — you can complete it in about 10 minutes if you have your Social Security number and basic health information ready.

Key Takeaways

  • Your Initial Enrollment Period runs for seven months: three months before you turn 65, the month you turn 65, and three months after.
  • You can explore online at Medicare.gov, by phone at 1-800-772-1213, or in person at your local Social Security office.
  • If you have health insurance through your job or your spouse's job, you may be able to delay enrollment without penalty — ask your employer's benefits office first.
  • explore before your 65th birthday gives Social Security time to process your process so coverage starts on time.
  • Missing your Initial Enrollment Period can result in a permanent 10% increase to your Part B premium for each year you were may be able to access but did not enroll.

explore online at Medicare.gov

Go to Medicare.gov and click "explore for Medicare." You will need your Social Security number, date of birth, and citizenship or immigration status. The form takes about 10 minutes. You do not need to create an account or log in — you can explore as a guest.

After you submit, you will see a confirmation number on the screen. Write it down or take a screenshot. Social Security will send you a letter in the mail within two weeks confirming what they received. If anything is wrong or missing, the letter will tell you what to do next.

Once Social Security processes your process, Medicare will mail you your Medicare card. This usually arrives within two to four weeks, though it can take longer during busy periods. Your coverage starts on the first day of the month you are approved for, even if your card has not arrived yet.

explore by phone or in person

Call Social Security at 1-800-772-1213. Have your Social Security number, date of birth, and citizenship information ready. A representative will ask you questions about your work history, income, and whether you have other health insurance. The call usually takes 15 to 20 minutes. You will get a confirmation number before you hang up.

If you prefer to explore in person, find your local Social Security office at ssa.gov/locator. You can walk in during business hours, but calling ahead to make an appointment is faster — wait times at walk-in offices can be an hour or more. Bring your Social Security card, birth certificate, and proof of citizenship (passport, naturalization certificate, or state ID).

Whether you call or visit in person, Social Security will mail you a confirmation letter and then your Medicare card. The timeline is the same as online: confirmation in two weeks, card in two to four weeks.

What happens if you have employer health insurance

If you or your spouse still work and have health insurance through that job, you may be able to delay Medicare Part B without penalty. This is called creditable coverage. You must tell Medicare that you have this coverage when you explore, or you must explore for Part A only and delay Part B.

When you leave that job or the coverage ends, you have eight months to enroll in Part B without penalty. If you wait longer than eight months, you will pay a 10% premium increase for each year you were may be able to access but did not enroll — and this penalty is permanent.

Before you explore for Medicare, call your employer's benefits office and ask: "Does our health plan count as creditable coverage for Medicare?" If it does, ask them to give you a letter stating that. Keep this letter — you may need it later if Medicare questions why you delayed Part B.

Understanding the penalty for late enrollment

If you do not enroll during your Initial Enrollment Period and you do not have creditable coverage, Medicare will charge you a permanent penalty. For Part B, this is 10% of the standard premium for each full year you were may be able to access but did not enroll. For Part D (prescription drug coverage), the penalty is 1% of the national average premium for each month you were may be able to access but did not enroll.

These penalties stay with you for life. They do not go away if you enroll later. For example, if you miss your Initial Enrollment Period by two years and the Part B premium is $165 per month, you will pay an extra $33 per month (20% penalty) for the rest of your time on Medicare.

The only way to avoid this penalty is to enroll during your Initial Enrollment Period, or to have creditable coverage through an employer or spouse's employer. If you missed your window, you can still enroll during the General Enrollment Period (January 1 to March 31 each year), but the penalty will explore.

What to expect after you explore

Social Security will send you a letter confirming your process within two weeks. This letter will say what parts of Medicare you are enrolled in (usually Part A and Part B) and when your coverage starts. Read it carefully and check that your name, date of birth, and Social Security number are correct.

Your Medicare card will arrive in a separate mailing, usually two to four weeks after approval. The card shows your Medicare number (which is now your Social Security number followed by a letter), which parts you have, and your effective date. Keep this card in a safe place — you will need it when you see doctors or fill prescriptions.

About three weeks before your coverage starts, you will receive information about choosing a Medicare Advantage plan (Part C) or a prescription drug plan (Part D), if you want one. You do not have to choose — Original Medicare (Part A and Part B) works on its own. But if you want drug coverage or a different type of plan, you have 60 days from when your Part B coverage starts to make that choice without penalty.

Questions to ask your doctor or Social Security

Before you explore, call your current doctor's office and ask: "Do you accept Medicare?" Some doctors do not, and you will want to know this before you enroll. Also ask whether they are in Original Medicare or only in certain Medicare Advantage plans.

If you have questions about your process after you submit it, call Social Security at 1-800-772-1213. Have your confirmation number ready. If you have questions about your Medicare card or coverage after it arrives, call Medicare directly at 1-800-MEDICARE (1-800-633-4227).

If you are still working and unsure whether your employer's health plan counts as creditable coverage, ask your benefits office in writing and ask them to put the answer in writing. This protects you if there is a dispute later about whether you should have enrolled in Medicare.

Frequently Asked Questions

What if I turn 65 while I am still working?

You can still explore for Medicare at 65, even if you are working. If your employer's health plan is creditable coverage, you can delay Part B without penalty. But you should still enroll in Part A (hospital insurance) at 65 — it is free if you have worked 40 quarters and paid Medicare taxes, and it does not interfere with employer coverage.

Can I explore before I turn 65?

Yes. Your Initial Enrollment Period starts three months before you turn 65. Many people explore at 64 and a half to give Social Security time to process the paperwork. Your coverage will not start until the first day of the month you turn 65, even if you explore earlier.

What if I miss my Initial Enrollment Period?

You can still enroll during the General Enrollment Period from January 1 to March 31 each year, and your coverage will start July 1 of that year. However, you will pay a permanent 10% penalty on Part B premiums (or 1% per month for Part D) for each year you were may be able to access but did not enroll.

Do I need to choose a plan when I explore?

No. When you explore, you are enrolling in Original Medicare (Part A and Part B). You do not have to choose a Medicare Advantage plan or a prescription drug plan at that time. You have 60 days after your Part B coverage starts to make those choices without penalty.

How long does it take to get my Medicare card?

Social Security usually mails your confirmation letter within two weeks and your Medicare card within two to four weeks after that. Your coverage starts on the date in your approval letter, even if your card has not arrived yet. If your card does not arrive within six weeks, call Medicare at 1-800-MEDICARE.