Do you automatically get medicare with social security

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If you become eligible for Medicare because of a disability and have been receiving Social Security Disability Insurance (SSDI) or railroad disability annuity checks for 24 months, you should automatically be enrolled in both Medicare Parts A and B at the start of your 25th month.

You should not have to contact anyone. You should receive a package in the mail three months before your coverage starts with your new Medicare card. There will also be a letter explaining how Medicare works and that you were automatically enrolled in both Parts A and B. If you get Social Security retirement benefits, your package and card will come from the Social Security Administration (SSA). If you get railroad disability annuity checks, your package and card will come from the Railroad Retirement Board.

The letter also explains that your monthly Part B premium will be automatically deducted from your Social Security check or railroad disability annuity check beginning the month your coverage begins.

Typically, you should not turn down Part B unless you have insurance based on your or your spouse’s current work (job-based insurance). If you do not have job-based insurance and you turn down Part B, you may incur a premium penalty if you need to sign up for Medicare coverage in the future. Also, if your job-based insurance will pay secondary after you become eligible for Medicare, you should consider enrolling in Medicare in order to have primary coverage and pay less for your care.

If you were not automatically enrolled or have other enrollment questions, contact your local Social Security office or Railroad Retirement Board field office.

Generally, we advise people to file for Medicare benefits 3 months before age 65. Remember, Medicare benefits can begin no earlier than age 65. If you are already receiving Social Security, you will automatically be enrolled in Medicare Parts A and B without an additional application. However, because you must pay a premium for Part B coverage, you have the option of turning it down.  You will receive a Medicare card about two months before age 65. (Note: Residents of Puerto Rico or foreign countries will not receive Part B automatically. They must elect this benefit.)

If you would like to file for Medicare only, you can apply by calling 1-800-772-1213. Our representatives there can make an appointment for you at any convenient Social Security office and advise you what to bring with you.  When you apply for Medicare, we often also take an application for monthly benefits.  You can apply for retirement benefits online.

If you didn’t sign up when you were first eligible for Medicare, you can sign up during the General Enrollment Period between January 1 and March 31 each year, unless you are eligible for a Special Enrollment Period.

Content created by Digital Communications Division (DCD)
Content last reviewed October 10, 2014

1. People are eligible for Medicare for different reasons.  

Some are eligible when they turn 65. People under 65 are eligible if they have received Social Security Disability Insurance (SSDI) or certain Railroad Retirement Board (RRB) disability benefits for at least 24 months. If they have amyotrophic lateral sclerosis (ALS), there’s no waiting period for Medicare. Some people with End Stage Renal Disease (ESRD) may be eligible for Medicare. It’s important to know the different ways that people qualify for Medicare so you can help current and former employees and their dependents anticipate their eligibility for Medicare so they can make timely and appropriate decisions about their enrollment.

2. Some people get Medicare Part A (Hospital Insurance) and Part B (Medical Insurance) automatically and some people need to sign up for them. 

People living in the United States and U.S. Territories (except Puerto Rico) who are already collecting Social Security—either disability or retirement—are automatically enrolled into Part A and Part B when they’re first eligible. These people will get a packet of information a few months before they turn 65 or receive their 25th month of Social Security Disability or Railroad Retirement Board (RRB) benefits.  At that time, they can choose to keep or decline Part B, but can’t decline Part A unless they withdraw their original application for Social Security and pay back all Social Security cash benefits.  

People who aren’t yet collecting Social Security, or aren’t eligible for Social Security Retirement, aren’t automatically enrolled into Medicare. They must sign up by contacting Social Security.  

People living in Puerto Rico or foreign countries who already have Part A need to sign up for Part B by completing an Application for Enrollment in Part B (CMS-40B). This form is also available in Spanish (PDF).

3. Enrolling in Medicare can only happen at certain times.

If someone is eligible for free Part A due to age, he or she can enroll in Part A any time after they’re first eligible for Medicare during the Initial Enrollment Period (IEP). An individual may be eligible for premium free Part A if they or their spouse paid Medicare taxes while working. If eligible for free Part A, coverage for Part A begins 6 months back from the date they apply, but no earlier than the first month of being eligible for Medicare.

However, the law only allows for enrollment in Medicare Part B (Medical Insurance), and premium-Part A (Hospital Insurance), at limited times:

  • Initial Enrollment Period – a 7-month period when someone is first eligible for Medicare. For those eligible due to age, this period begins 3 months before they turn 65, includes the month they turn 65, and ends 3 months after they turn 65.  For those eligible due to disability, this period begins three months before their 25th month of disability payments, includes the 25th month, and ends 3 months after.  By law, coverage start dates vary depending on which month the person enrolls and can be delayed up to 3 months.
  • General Enrollment Period – January 1 through March 31 each year with coverage starting July 1
  • Special Enrollment Period (SEP) – an opportunity to enroll in Medicare outside the Initial Enrollment Period or General Enrollment Period for people who didn’t enroll in Medicare when first eligible because they or their spouse are still working and have employer-sponsored Group Health Plan coverage based on that employment. Coverage usually starts the month after the person enrolls, but can be delayed up to 3 months in limited circumstances.
    People who are eligible for Medicare based on disability may be eligible for a Special Enrollment Period based on their or their spouse’s current employment. They may be eligible based on a spouse or family member’s current employment if the employer has 100 or more employees.

4. Determining whether a person qualifies for a Special Enrollment Period is the first important factor to consider when making a decision about Part B enrollment.

It’s critical that employees and their dependents consider whether Part B is right for them when they’re first eligible for Medicare.  Decisions about Part B enrollment for people with employer–based insurance first depend on whether a person has insurance based on current employment.

Generally, if an individual (or their spouse) is still working and has employer-sponsored Group Health Plan coverage based on that employment, they can delay enrollment in Part B and can enroll later during a SEP. But, there are special rules that they need to know. For example, employer coverage for retirees or through COBRA doesn’t count as current employment, so these individuals don’t qualify for a SEP to enroll in Medicare later. A different set of rules apply if the person has Medicare based on disability or ESRD.

5. Knowing who pays first is the second important factor to consider when making a decision about Part B enrollment.

When Medicare and another health insurance plan are responsible for paying the same medical claim, coordination of benefits rules determine how Medicare works with other health coverage.  When someone is considering delaying or declining Part B, it’s important for the beneficiary to know:

  • Whether their employer-sponsored Group Health Plan coverage will pay primary or secondary and,
  • If it pays secondary to Medicare, whether and how it will pay if they don’t enroll in Part A and/or Part B.

Note that most retiree and small employer plans (employers with fewer than 20 employees) require enrollment in Part A and Part B.  If the retiree plan you offer requires Medicare enrollment, please advise your employees planning to retire well in advance. If someone doesn’t sign up for Part B when first eligible,  they may have to pay late enrollment penalties, in addition to the standard Part B premium amount, for as long as the person has Part B and they may face periods with little or no health coverage.