When You Need Medicare: Age, Work History, and Your Options

You need Medicare when you turn 65, or sooner if you have a disability or end-stage renal disease

Medicare is a federal health insurance program run by the Centers for Medicare & Medicaid Services (CMS). Most people become may be able to access at 65, but may be able to access starts earlier for some. You do not have to wait until 65 if you have been receiving Social Security disability benefits for 24 months, or if you have end-stage renal disease (ESRD) or amyotrophic lateral sclerosis (ALS). If you are already covered by an employer health plan, you may not need to enroll right away — but waiting past certain important date can cost you in penalties.

The decision to enroll depends on your age, your work history, and whether you already have health coverage. This guide explains who needs Medicare and when, so you can understand your own situation and what comes next.

Key Takeaways

You become may be able to access for Medicare at 65 if you or your spouse worked and paid Medicare taxes for at least 10 years (40 quarters).
You can enroll as early as age 63 if you have been on Social Security disability for 24 months, or when ready if you have end-stage renal disease or ALS.
If you are still working and covered by your employer's health plan, you can delay Medicare enrollment without penalty, but you must enroll within 8 months of leaving that job.
Delaying enrollment past 65 without may have access to coverage can result in a permanent penalty added to your Part B and Part D premiums.
You can check your work history and estimated benefits through your personal Social Security account at ssa.gov.

Medicare may be able to access at 65 based on work history

The most common path to Medicare is turning 65. To be may be able to access, you or your spouse must have worked and paid Medicare taxes for at least 10 years — the program counts this as 40 quarters of coverage. A quarter is roughly three months of work in a calendar year. You do not have to have worked all 40 quarters recently; they can be spread across your entire working life.

If you were born in the United States and worked in jobs covered by Social Security, you almost certainly paid Medicare taxes. Self-employed people also pay Medicare taxes as part of their self-employment tax. Railroad workers covered by the Railroad Retirement Board may have different rules; contact the RRB directly to confirm your status.

You can check your work record and see how many quarters you have earned by creating a personal account at ssa.gov. This takes about 10 minutes and shows your earnings history year by year. If you find errors, you can correct them by contacting Social Security directly.

Early may be able to access: disability, ESRD, and ALS

You do not have to wait until 65 if you may have access to under one of three conditions. If you have been receiving Social Security Disability Insurance (SSDI) for 24 months, you become may be able to access for Medicare at that point, regardless of your age. This means someone who becomes disabled at 40 and receives SSDI can enroll in Medicare at 42.

If you have end-stage renal disease (ESRD) — permanent kidney failure requiring dialysis or a transplant — you become may be able to access for Medicare when ready, even if you have not yet applied for Social Security benefits. You will need documentation from your doctor or dialysis center confirming the diagnosis.

If you have amyotrophic lateral sclerosis (ALS), also called Lou Gehrig's disease, you become may be able to access for Medicare when ready as well. You do not have to wait for a Social Security disability decision. Bring medical records confirming the diagnosis when you enroll.

When you can delay enrollment without penalty

If you are still working at 65 and covered by your employer's health plan, you can delay enrolling in Medicare without facing a penalty. This is called the Special Enrollment Period for active workers. Your employer's plan must be based on current employment — coverage through a spouse's employer also qualifies, as does coverage through a union or professional association.

The key is timing: you must enroll in Medicare within 8 months of the date you leave your job or lose your employer coverage, whichever comes first. If you retire on June 1, you have until the end of January to enroll without penalty. If you miss this window, you will owe a permanent surcharge on your Part B premium (currently 10 percent per year of delay) and on your Part D prescription drug premium.

If you are covered by COBRA (the federal law that lets you keep employer coverage after leaving a job), the 8-month clock starts when your COBRA coverage ends, not when you leave the job. This gives you extra time if you choose to use COBRA.

What happens if you do not enroll on time

Missing the enrollment important date carries real costs. If you delay Part B enrollment past 65 without may have access to coverage, you pay a permanent 10 percent surcharge on your monthly premium for each year you were may be able to access but not enrolled. Someone who waits three years to enroll will pay 30 percent more than someone who enrolled on time — and this surcharge stays with you for life.

The same penalty applies to Part D (prescription drug coverage). If you go 63 or more days without prescription coverage and later enroll, you pay a surcharge equal to 1 percent of the national average Part D premium for each month you were without coverage.

The only way to avoid these penalties is to have had may have access to coverage during the time you delayed. may have access to coverage includes an employer health plan, COBRA, Medicaid, the Veterans Health Administration, or certain other government programs. Regular private insurance you buy on your own does not count.

How to check your may be able to access and next steps

Start by creating a personal account at ssa.gov. You will need your Social Security number, email address, and a phone number. Once you log in, you can view your earnings record, see how many quarters you have earned, and get an estimate of your future benefits. This takes about 10 minutes and answers the most basic question: do you have 40 quarters of coverage?

If you are approaching 65, you should enroll in Medicare about three months before your birthday. You can enroll online at Medicare.gov, by phone at 1-800-MEDICARE, or in person at your local Social Security office. The enrollment process itself is free and takes about 20 minutes online.

If you are disabled and have been receiving SSDI for 24 months, you will receive a notice from Social Security telling you that you are may be able to access. You can enroll using the same methods — online, by phone, or in person. If you have ESRD or ALS, contact your doctor or dialysis center to get the documentation you need, then enroll through Medicare.gov or by calling 1-800-MEDICARE.

Understanding your coverage options once you enroll

Medicare has different parts, and you will need to choose which ones you want. Part A covers hospital stays, skilled nursing, and hospice. Part B covers doctor visits, outpatient care, and preventive services. Most people get both Part A and Part B, often called Original Medicare. Part D covers prescription drugs. You can also choose a Medicare Advantage plan (Part C), which is an alternative to Original Medicare offered by private insurance companies.

The choices you make at enrollment affect your costs and coverage for the year ahead. If you are unsure which option fits your situation, you can speak with a counselor at your State Health Insurance information Program (SHIP) for free. Find your state's SHIP by visiting shiptalk.org or calling 1-877-839-2675.

Frequently Asked Questions

What if I worked outside the United States?

Work in most countries does not count toward Medicare may be able to access. However, if you worked in a country that has a totalization agreement with the United States — including Canada, the United Kingdom, France, Germany, and several others — some of that work may count. Contact Social Security to discuss your specific work history.

Can I enroll in Medicare before I turn 65?

Yes, if you have been receiving Social Security disability benefits for 24 months, or if you have end-stage renal disease or ALS. Otherwise, you must wait until the month you turn 65. You can enroll up to three months before your 65th birthday.

What if I do not have 40 quarters of work history?

If you do not have 40 quarters yourself, you may be may be able to access based on your spouse's work history if you are married and at least 62 years old, or based on your ex-spouse's history if you were married for at least 10 years. Contact Social Security to explore this option.

Do I lose my employer health insurance when I turn 65?

Not automatically. If you are still working, your employer coverage continues. If you retire, your employer may offer retiree coverage, or you may lose it. Check with your employer's benefits office about what happens to your coverage when you retire.

Is there a penalty if I enroll early?

No. If you are may be able to access before 65 — because of disability, ESRD, or ALS — you can enroll without penalty. The penalties explore only if you delay enrollment after you become may be able to access.

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.