Do You Automatically Get Medicare When You Start Social Security

You do not automatically get Medicare just because you start receiving Social Security

Many people assume that once they begin collecting Social Security, Medicare enrollment happens on its own. It does not. You must take a separate step to enroll in Medicare, even if you have been receiving Social Security for years. The two programs are separate — Social Security is income support, and Medicare is health insurance. Missing the enrollment window can cost you in late penalties that last for life.

The one exception: if you have already been getting Social Security Disability Insurance (SSDI) for 24 months, you are automatically enrolled in Medicare Part A and Part B. But if you are starting regular retirement Social Security at 62, 67, or any other age, you need to enroll in Medicare yourself when you turn 65.

Key Takeaways

Social Security and Medicare are separate programs, and enrolling in one does not enroll you in the other.
You must enroll in Medicare during the three-month window before the month you turn 65, the month you turn 65, or the three months after.
If you delay enrolling past that window and do not have other may have access to coverage, you will pay a permanent penalty on your Part B and Part D premiums.
You can enroll 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 health insurance through your employer, you may be able to delay Medicare enrollment without penalty.

When you turn 65, you have a limited window to enroll

Medicare enrollment happens during a seven-month period called your Initial Enrollment Period. It runs from three months before the month you turn 65, through the month you turn 65, and for three months after. If your birthday is March 15, your window opens December 1 and closes June 30.

You do not have to enroll on the first day. You can enroll anytime during those seven months. But if you miss the window entirely, you cannot go back and fix it without paying a penalty — unless you have what Medicare calls "creditable coverage," which usually means you were covered by an employer health plan during that time.

The penalty is permanent. If you enroll late in Part B, your monthly premium increases by 10 percent for each 12-month period you were not enrolled. If you enroll late in Part D (prescription drug coverage), your premium goes up by 1 percent for each month you were late. These penalties stay with you for life, even if you switch plans later.

How to enroll in Medicare

You have three ways to enroll: online, by phone, or in person. The online route is the fastest. Go to Medicare.gov, click "Sign Up for Medicare," and log in with your Social Security number. You will answer questions about your coverage history and confirm which parts of Medicare you want. The system will tell you right away if you may have access to for help paying premiums.

If you prefer to talk to someone, call 1-800-MEDICARE (1-800-633-4227). Representatives are available seven days a week, and they can walk you through the enrollment questions. Have your Social Security number, birth date, and any current insurance information ready.

You can also enroll in person at your local Social Security office. Call ahead to make an appointment — walk-ins are possible but may mean a long wait. Bring your Social Security card, proof of citizenship or legal residency (passport, birth certificate, or naturalization papers), and proof of residence (a utility bill or lease dated within the last two months).

What happens if you are still working

If you are 65 or older and still working, and your employer has 20 or more employees, you may be able to delay Medicare Part B enrollment without penalty. This is called creditable coverage. Your employer health plan is considered creditable if it covers you as an active employee.

You still need to enroll in Part A (hospital insurance) at 65, even if you are working. Part A is usually free if you or your spouse paid Medicare taxes for at least 10 years. But you can delay Part B and Part D without penalty as long as you have employer coverage and are actively employed.

When you leave your job or lose the employer coverage, you have eight months to enroll in Part B and Part D without penalty. This is called your Special Enrollment Period. Do not wait longer than eight months — after that, the late penalty applies.

Part A, Part B, Part D, and Medigap — what you are actually enrolling in

Medicare has four main pieces, and you need to understand which ones you are choosing. Part A covers hospital stays, skilled nursing care, and hospice. Part B covers doctor visits, outpatient care, and medical equipment. Part D covers prescription drugs. Part C, also called Medicare Advantage, is an alternative to Parts A and B offered by private insurance companies.

Most people enroll in Part A and Part B. Part D is optional but recommended — if you do not enroll when you turn 65 and later decide you need it, you pay a penalty. Medigap (also called Supplement insurance) is a separate policy you buy from a private insurer to cover costs that Medicare does not, like copays and coinsurance. Medigap is not part of Medicare enrollment — you buy it separately if you want it.

When you enroll online or by phone, the system will ask which coverage you want. If you are unsure, you can enroll in Part A and Part B first and add Part D later during the annual open enrollment period (October 15 to December 7) without penalty, as long as you enroll within three months of losing other drug coverage.

What to do if you missed the enrollment window

If you are past your Initial Enrollment Period and did not enroll, you have limited options. If you have creditable coverage — meaning you were covered by an employer plan, COBRA, or certain other plans during the time you were not enrolled in Medicare — you can enroll without penalty during your Special Enrollment Period. This period lasts eight months from the date your coverage ended.

If you do not have creditable coverage, you can still enroll, but you will pay the late penalty. The penalty is permanent, so it is worth enrolling as soon as possible to stop it from growing. You can enroll during the General Enrollment Period, which runs January 1 to March 31 each year. Coverage begins July 1 of that year.

If you believe you have a good reason for missing the important date — for example, you were out of the country or in a hospital — you can ask Medicare to waive the penalty. Call 1-800-MEDICARE and ask to speak with someone about a late enrollment penalty exception. Medicare will review your situation, but approval is not may provide.

Questions to ask your doctor or Social Security office

Before you enroll, it helps to know what your current health needs are. Ask your doctor which parts of Medicare you should prioritize and whether they accept Medicare. Ask whether they recommend a Medigap policy based on your health conditions. If you take prescription drugs, ask your pharmacist which Part D plans cover your medications — different plans cover different drugs.

At Social Security or Medicare, ask whether you may have access to for Extra Help, a program that pays Part D premiums and cost-sharing for people with limited income. Ask what the difference is between Original Medicare (Parts A and B) and Medicare Advantage (Part C) in your area, since the options and costs vary by location. Ask when your coverage will start — it is usually the first day of the month you turn 65, but it can be different depending on when you enroll.

Frequently Asked Questions

If I start Social Security at 62, do I have to enroll in Medicare then?

No. You can start Social Security at any age, but Medicare enrollment is tied to age 65, not to when you start Social Security. You have until you turn 65 to enroll. If you start Social Security early, at 62, you still wait until 65 to enroll in Medicare.

What if I have been on disability and now I am turning 65?

If you have been receiving SSDI for 24 months, you were automatically enrolled in Medicare at month 24. When you turn 65, your SSDI becomes regular retirement Social Security, but your Medicare coverage continues without any action needed from you.

Can I enroll in Medicare before I turn 65?

Your Initial Enrollment Period begins three months before the month you turn 65. You can enroll during that three-month window even though you have not yet turned 65. Your coverage will start the first day of the month you turn 65.

Do I have to choose between Social Security and Medicare?

No. They are separate programs. You can receive Social Security without Medicare, or Medicare without Social Security. Most people do both, but the enrollment is separate for each one.

What if I do not want Medicare?

You can decline Medicare Part B and Part D, but Part A is harder to turn down — if you are receiving Social Security, you are automatically enrolled in Part A at 65 unless you actively decline it in writing. You would need to have other coverage and submit a form to Medicare to opt out of Part A.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.