Medicare · Supporting
Medicare eligibility age: who qualifies at 65 and what opens the door earlier
Last reviewed September 18, 20264 min readBy the Goodsurance editorial team Reviewed by the Goodsurance editorial team
Medicare eligibility begins at 65 for most Americans. If you are already receiving Social Security or Railroad Retirement Board (RRB) benefits at least four months before you turn 65 and you live in the United States (outside Puerto Rico), you are enrolled automatically in both Part A (hospital insurance) and Part B (medical insurance). Part B is not opt-in for this group; it arrives alongside Part A and must be actively refused if you do not want it. Instructions for declining Part B come in your Welcome to Medicare package.
The standard eligibility age
People living in Puerto Rico who qualify for automatic enrollment receive only Part A automatically. Enrolling in Part B requires a separate, active application.
If you are not yet collecting Social Security at 65, you are not auto-enrolled and must sign up during your Initial Enrollment Period (IEP). Part A is premium-free for people with 40 or more quarters (about 10 years) of Medicare-taxed work. Part B carries a monthly premium: in 2026, the standard Part B premium is $202.90 per month, according to CMS.
Medicare before 65
Three pathways open Medicare to people younger than 65.
Social Security Disability Insurance (SSDI). After 24 months of receiving SSDI payments, Medicare coverage begins automatically, per the Social Security Administration. The two-year clock starts from the date your SSDI benefit is established, not from the date you applied or were approved.
Amyotrophic lateral sclerosis (ALS). If you receive SSDI with an ALS diagnosis, the 24-month waiting period does not apply. Per Medicare.gov, Medicare begins the month your SSDI disability benefits start.
End-stage renal disease (ESRD). Permanent kidney failure requiring regular dialysis or a transplant qualifies you for Medicare at any age. Your exact coverage start date depends on your specific circumstances. Medicare.gov provides a step-by-step enrollment guide for ESRD with the precise timing for your situation.
Three ways to get Medicare before 65
ALS and ESRD skip the 24-month waiting period that applies to other SSDI cases.
Your enrollment window at 65
The Initial Enrollment Period is seven months: the three months before your birthday month, the birthday month itself, and the three months after. Enrolling during the first three months means your coverage typically starts the month you turn 65. Waiting until the fourth month or later causes a delay of one to three months.
Missing your IEP without a qualifying reason creates two lasting problems.
The Part B late-enrollment penalty adds 10% to your Part B premium for each full 12-month period you went without Part B and lacked qualifying coverage. The penalty is permanent; it does not expire after a set number of years.
The Part D late-enrollment penalty (Part D covers outpatient prescription drugs) adds 1% of the national base beneficiary premium for each full month you lacked creditable drug coverage. Going 63 or more days without creditable coverage after your IEP triggers this penalty, and it is also permanent.
If you miss your IEP, you can still enroll during the General Enrollment Period each year. Medicare.gov has the current dates and coverage-start timing.
Working past 65 and keeping employer coverage
If you or your spouse is actively working and covered by an employer plan, you may be able to delay Part B without a penalty. The protection depends on employer size.
With 20 or more employees, the employer plan pays primary to Medicare. Your delay is protected by a Special Enrollment Period (SEP). The Part B SEP is eight months, starting on the date employment ends or employer coverage ends, whichever comes first.
With fewer than 20 employees, Medicare pays primary. Staying on a small-group plan without enrolling in Medicare can leave a coverage gap and does not protect you from the late-enrollment penalty.
Two rules that trip people up:
COBRA is not active employer coverage. Taking COBRA after leaving a job does not restart or extend the SEP. The eight-month window opens when the original employment or coverage ends, not when COBRA ends.
Retiree health plans carry the same limitation. A health plan offered by a former employer after retirement does not count as active employer coverage for SEP purposes.
Health Savings Account (HSA) users. Any Medicare enrollment, including premium-free Part A, ends your ability to make new HSA contributions. Part A can backdate up to six months when you claim Social Security retroactively, so stopping contributions at least six months before you claim helps you avoid an IRS excess-contribution problem.
Income, IRMAA, and choosing coverage
Once enrolled, most people pay the standard Part B premium. Higher earners pay more through the Income-Related Monthly Adjustment Amount (IRMAA), which applies to both Part B and Part D. IRMAA uses a two-year lookback: your 2026 premiums are based on your 2024 Modified Adjusted Gross Income (MAGI). In 2026, IRMAA begins above $109,000 for single filers and above $218,000 for joint filers, according to CMS. Higher earners move into additional tiers, and Part D carries a parallel surcharge. The full bracket table is available at Medicare.gov.
If your income has dropped since the base year, for example because you recently retired, you can request reconsideration using SSA form SSA-44. The request must be filed within 60 days of receiving the IRMAA notice.
Each fall, the Annual Enrollment Period (AEP), which runs October 15 to December 7, lets you join, switch, or drop a Medicare Advantage (Part C) plan or Part D drug plan for the coming year. Medicare Advantage is the private-plan alternative to Original Medicare and typically bundles hospital, medical, and drug coverage in one plan. To find out more about coverage options that fit your situation, please contact us to discuss plan options.
If your income has dropped since the base year, you can request a lower premium by filing SSA form SSA-44. You have this many days from the date you receive your IRMAA notice to file.
Common questions about IRMAA appeals
Quick answers, fast .
Tap any question to expand. Each links to a fuller standalone answer.
Does Medicare pay for hearing aids
Original Medicare does not cover hearing aids or fittings.
Some Medicare Advantage plans may include a hearing benefit, but what they cover varies by plan.
Does Medicare cover ambulance services?
Yes, in limited situations.
Medicare Part B covers emergency ambulance transportation when traveling any other way could endanger your health, taking you to the nearest appropriate hospital or facility. You pay 20% of the Medicare-approved amount after the $283 Part B deductible in 2026. Air ambulance is covered only when ground transport cannot reach you or would take too long. Non-emergency ambulance trips, for example to dialysis, are covered only when a doctor provides a written order stating they are medically necessary. Medicare does not cover ambulance rides taken purely for convenience.
Does Medicare cover skilled nursing facility care?
Yes, on a short-term basis.
Medicare Part A covers skilled nursing facility (SNF) care after a qualifying inpatient hospital stay of at least 3 days, when you need daily skilled care like nursing or therapy. In 2026 you pay $0 for days 1 through 20 of each benefit period, $217 per day for days 21 through 100, and all costs after day 100. Coverage is for skilled care while you recover, not for long-term or custodial care (help with daily activities like bathing or dressing), which Medicare does not cover. Long-term nursing home care is generally paid through Medicaid or private funds.
Does Medicare cover physical therapy?
Yes.
Medicare Part B covers outpatient physical therapy that is medically necessary to treat your condition. You pay 20% of the Medicare-approved amount after the yearly Part B deductible ($283 in 2026). There is no longer a hard dollar cap on therapy, but once your physical and speech therapy together pass $2,480 in 2026, your therapist must add a note (called a KX modifier) confirming you still need care. Claims above $3,000 may be reviewed for medical necessity. Part A covers physical therapy you receive as a hospital inpatient or in a skilled nursing facility. A doctor or therapist must set up and regularly review your plan of care.
Does Medicare cover mental health services?
Yes.
Medicare covers mental health care across its parts in 2026. Part B covers outpatient services like therapy, counseling, and visits with psychiatrists, psychologists, and clinical social workers, and since 2024 it also covers marriage and family therapists and mental health counselors. You pay 20% of the Medicare-approved amount after the $283 deductible, and one depression screening each year is free. Part A covers inpatient mental health care, with a lifetime limit of 190 days in a freestanding psychiatric hospital. Part D covers most mental health medications. Many of these services are also available by telehealth, and Medicare Advantage plans cover at least the same benefits.
Does Medicare cover chiropractic care?
Partly.
Medicare Part B covers one specific chiropractic service: manual manipulation of the spine to correct a subluxation (when one or more bones of the spine are out of position) that a doctor confirms is medically necessary. You pay 20% of the Medicare-approved amount after the $283 Part B deductible in 2026. Medicare does not cover other services a chiropractor might offer, such as X-rays, massage therapy, acupuncture, or routine wellness visits, so you would pay the full cost for those. Some Medicare Advantage plans include extra chiropractic or wellness benefits beyond this.
Does Medicare cover home health care?
Yes, when you qualify.
Medicare Parts A and B cover home health care if a doctor certifies that you are homebound (leaving home takes a major effort) and need part-time skilled care, such as skilled nursing, physical therapy, occupational therapy, or speech therapy. A Medicare-certified home health agency must provide the care under a plan your doctor reviews. You pay $0 for covered home health visits in 2026, and 20% for any durable medical equipment. Medicare does not cover 24-hour home care, meal delivery, or homemaker services like cleaning when that is the only care you need.
Does Medicare cover vision care?
Mostly no for routine care.
In 2026, Original Medicare does not cover routine eye exams for glasses or contact lenses, and it does not pay for the glasses or contacts themselves. It does cover some medical eye care: yearly glaucoma screenings for people at high risk, diabetic retinopathy exams, treatment for eye diseases, and cataract surgery (including one pair of standard glasses or contacts afterward). For those covered services you pay 20% after the $283 Part B deductible. Many Medicare Advantage plans add a routine vision benefit covering eye exams and an allowance for glasses.
Does Medicare cover hearing aids?
Original Medicare does not cover hearing aids or the exams used to fit them.
Some Medicare Advantage plans include a hearing benefit, but coverage varies by plan.
Does Medicare cover diabetes supplies and testing?
Yes.
In 2026 Medicare covers most diabetes care across two parts. Part B (outpatient care and equipment) covers blood sugar monitors, test strips, lancets, and continuous glucose monitors (CGMs) as durable medical equipment, plus diabetes screenings and a self-management training program. You pay 20% of the Medicare-approved amount after the $283 Part B deductible. Part D (drug coverage) covers insulin and related supplies like syringes, and in 2026 your insulin is capped at $35 for a month's supply. If you have a Medicare Advantage plan, it covers at least the same diabetes benefits, sometimes with added extras.
Does Medicare cover durable medical equipment?
Yes.
Medicare Part B covers durable medical equipment (DME): reusable medical gear your doctor prescribes for use at home, such as wheelchairs, walkers, hospital beds, oxygen equipment, CPAP machines, and blood sugar monitors. You pay 20% of the Medicare-approved amount after the $283 Part B deductible in 2026, and Medicare pays the other 80%. To be covered, the item must be ordered by a Medicare-enrolled doctor and supplied by a Medicare-enrolled supplier, and some items are rented rather than bought. Equipment meant mainly for use outside the home, or only for comfort or convenience, is not covered.
Which is better, Medigap or Medicare Advantage?
Neither is better for everyone; they suit different needs.
Medigap (also called Medicare Supplement, a private policy that pairs with Original Medicare) lets you see any doctor nationwide who accepts Medicare with no network and very predictable out-of-pocket costs, but you pay a monthly Medigap premium and add a separate Part D drug plan. Medicare Advantage (Part C, your Medicare benefits through a private plan) often has a lower or $0 plan premium, bundles drug coverage and extras like dental and vision, and caps your yearly out-of-pocket costs, but uses provider networks and may require prior approval. People who travel, want maximum doctor freedom, and prefer steady costs often lean Medigap; people who want low premiums, extras, and a network they are comfortable with often lean Medicare Advantage. With both, you still pay the Part B premium ($202.90 per month in 2026). To find out which fits your situation, reach out to a licensed Goodsurance advisor at 1-888-301-8091 (TTY 711), Mon to Fri 8 am to 5 pm PT.
References
- Get started with MedicareMedicare.gov overview of eligibility, the Initial Enrollment Period, the SEP for active employer coverage, COBRA limitations, and late-enrollment penalties for Parts B and D.
- 2026 Medicare Parts B premiums and deductiblesCMS fact sheet with the 2026 standard Part B premium, Part A premium-free eligibility rules, and IRMAA income thresholds.
- Social Security handbook, section 2508: Medicare and disabilitySSA handbook section on Medicare eligibility for SSDI recipients, including the 24-month waiting period and how benefit-establishment dates are determined.