The Basic Requirements for Medicare Advantage

To enroll in a Medicare Advantage plan, you must first be enrolled in Original Medicare (Part A and Part B). You also need to be a U.S. citizen or permanent resident, live in the service area of the plan you choose, and be 65 or older. Some plans accept people under 65 who have been on Social Security Disability Insurance (SSDI) for at least 24 months, or who have end-stage renal disease (ESRD) or ALS.

The plan you pick must actually serve your ZIP code. Even if you meet every other requirement, a plan that does not operate in your area cannot cover you. You can check which plans serve your location on Medicare.gov or by calling 1-800-MEDICARE.

You do not need to pass a health test or medical exam. Medicare Advantage plans cannot turn you down or charge you more because of your health history. This protection applies during the annual enrollment period and during certain may have access to life events.

Key Takeaways

  • You must be enrolled in Original Medicare Part A and Part B before you can join a Medicare Advantage plan.
  • The plan you choose must serve your ZIP code; coverage area is the most common reason enrollment is denied.
  • You cannot be turned down for a Medicare Advantage plan because of a pre-existing condition or health status.
  • People under 65 with SSDI, ESRD, or ALS may be able to enroll if they meet the specific requirements for their condition.
  • Enrollment happens during the annual period (October 15 to December 7) or during a may have access to life event.

When You Can Enroll: Open Enrollment and Special Periods

The main time to join a Medicare Advantage plan is during the Annual Enrollment Period, which runs from October 15 through December 7 each year. Coverage begins January 1 of the following year. If you miss this window, you generally cannot enroll until the next October.

Certain life events open a special enrollment window outside the annual period. These include losing employer coverage, moving to a new state or ZIP code, getting married or divorced, or having a death in your household. You usually have 60 days from the event to make a change. Other may have access to events include becoming newly may be able to access for Medicare or losing Medicaid coverage.

If you are newly may be able to access for Medicare at 65, you have a seven-month window centered on your birthday month to enroll without penalty. This is called your Initial Enrollment Period. If you delay enrollment past this window and do not have creditable coverage (such as employer insurance), you may face a permanent penalty on your premiums.

People Under 65 With Disabilities or End-Stage Renal Disease

You may be able to enroll in Medicare Advantage before age 65 if you have been receiving SSDI benefits for at least 24 months. Your Medicare coverage begins the first day of the month after you have been on SSDI for 24 months. Once you are enrolled in Original Medicare, you can then join a Medicare Advantage plan during the annual enrollment period or a may have access to event.

People with end-stage renal disease (ESRD) — permanent kidney failure requiring dialysis or transplant — become may be able to access for Medicare regardless of age. ESRD patients have a special enrollment period and can join Medicare Advantage, though some plans may have restrictions. You should confirm with the plan that it accepts people with ESRD before enrolling.

People with ALS (amyotrophic lateral sclerosis) become may be able to access for Medicare when ready upon approval for SSDI, without the usual 24-month waiting period. Once enrolled in Original Medicare, you can choose a Medicare Advantage plan during the annual enrollment period.

What Happens If You Do Not Meet the Requirements

If you try to enroll and the plan says you are ineligible, the most common reason is that the plan does not serve your area. Check Medicare.gov to see which plans operate in your ZIP code. If no Medicare Advantage plans serve your location, you can stay on Original Medicare or look into other coverage options.

If you are not yet enrolled in Original Medicare Part A and Part B, you cannot join a Medicare Advantage plan. You must complete Original Medicare enrollment first. Contact Social Security or Medicare to start Part A and Part B before explore to a plan.

If you miss the annual enrollment period and do not have a may have access to life event, you cannot change plans until the next October. If you are already in a Medicare Advantage plan and want to switch to a different one, you must wait for the next annual enrollment period unless a may have access to event occurs.

How to Check Your may be able to access Before Enrolling

Start by confirming you are enrolled in Original Medicare. You can check your coverage status on your Medicare card or by logging into your Medicare.gov account. If you do not have an account, you can create one to view your enrollment status and coverage details.

Next, verify that at least one Medicare Advantage plan serves your ZIP code. Go to Medicare.gov, select "Find Care Providers and Suppliers," and enter your location. The site will show you all available plans in your area, their costs, and their coverage details. You can also call 1-800-MEDICARE and a representative will tell you which plans serve your address.

If you have a may have access to life event — such as moving, losing coverage, or a change in family status — gather documentation of the event. You will need this when you enroll. Examples include a lease showing your new address, a letter from your employer saying coverage ended, or a divorce decree.

Special Rules for People Turning 65

When you turn 65, you enter your Initial Enrollment Period, which spans three months before your birthday month, your birthday month itself, and three months after. During this seven-month window, you can enroll in Original Medicare Part A and Part B without penalty, even if you do not plan to use Medicare right away.

If you have employer coverage through a current job and you are still working, you may be able to delay Medicare enrollment without penalty. This is called creditable coverage. When you eventually leave that job or lose the coverage, you will have eight months to enroll in Medicare without a late penalty. After that window closes, penalties explore permanently.

Once you are enrolled in Original Medicare, you can join a Medicare Advantage plan during the annual enrollment period or if you have a may have access to life event. If you turn 65 during the annual enrollment period (October 15 to December 7), you can enroll in a plan at the same time you enroll in Original Medicare.

Frequently Asked Questions

Can I join a Medicare Advantage plan if I have a pre-existing condition?

Yes. Medicare Advantage plans cannot deny you coverage, charge you more, or exclude treatment for any health condition you had before enrollment. This protection is federal law and applies to all Medicare Advantage plans.

What if I move to a different state after I enroll?

Moving to a new state is a may have access to life event. You have 60 days from the date you move to change your Medicare Advantage plan. Contact your current plan and Medicare to report the move, and then select a new plan that serves your new address.

Can I enroll in Medicare Advantage if I am still working and have employer insurance?

Yes, but you should check whether your employer plan is creditable coverage. If it is, you may want to delay Medicare enrollment to avoid paying two premiums. Once you leave the job or lose coverage, you have eight months to enroll without penalty.

Do I need to be a U.S. citizen to join Medicare Advantage?

You must be a U.S. citizen or permanent resident. Permanent residents (green card holders) who meet all other requirements can enroll in Medicare Advantage plans.

What if no Medicare Advantage plans serve my area?

If your ZIP code has no Medicare Advantage plans, you can remain on Original Medicare. You may also have access to other coverage options such as Medigap or a Medicare Special Needs Plan. Call 1-800-MEDICARE to learn what is available where you live.