Medicare vs Medicaid: the difference, and being on both

The names are similar and the programs are not. Confusing them is common, and it matters, because the answer to “will this be covered” is often completely different depending on which one you mean.

The short version

Question	Medicare	Medicaid
Who runs it	The federal government	Federal and state governments jointly
Who qualifies	People 65+, and younger people with certain disabilities or ESRD	People within income and resource limits
Does income matter for eligibility?	No — only for premium surcharges	Yes, centrally
Does work history matter?	Yes, for premium-free Part A	No
Same rules in every state?	Broadly yes	No — every state runs its own program
Monthly premiums	Yes, for Part B and usually Part D	Usually none or minimal
Long-term custodial care	Not covered	Covered, subject to state rules
Where you apply	Social Security	Your state Medicaid agency

Medicare, briefly

Medicare is a federal entitlement program built around age and work history. You qualify at 65 whether you are wealthy or not, and your income affects only whether you pay an IRMAA surcharge on your premiums — not whether you are eligible.

It is administered nationally, so the rules are essentially the same in Massachusetts and in Arizona. What differs by geography is which private plans are sold in your county.

Full orientation: what is Medicare.

Medicaid, briefly

Medicaid is a needs-based program funded jointly by the federal government and the states, and run by each state under federal guidelines. That last part is the key difference: your state decides much of what Medicaid means for you.

• Every state calls it something. Massachusetts runs MassHealth. California runs Medi-Cal. Tennessee runs TennCare.
• Eligibility is based on income and, for certain categories, resources. Some states expanded eligibility under the Affordable Care Act; others did not, which creates a coverage gap in those states for adults earning too much for Medicaid and too little for Marketplace subsidies.
• Covered services go beyond Medicare’s list. Long-term custodial care is the big one — Medicaid is the largest payer of nursing home care in the country.

The difference that matters most: long-term care

This is where the confusion causes real financial damage.

Medicare does not pay for long-term custodial care. It pays for limited skilled nursing facility care following a qualifying inpatient hospital stay — the first 20 days at no charge, then daily coinsurance through day 100, then nothing. That is rehabilitation after an event, not ongoing care.

Custodial care — help with bathing, dressing, eating, moving around, over months or years — is not covered by Medicare at any point.

Medicaid does cover it, subject to each state’s eligibility rules. Those rules include asset limits, spend-down provisions, protections for a spouse remaining at home, and a look-back period on asset transfers, commonly five years, during which gifts can trigger a penalty period.

Being on both: dual eligibility

Roughly one in five Medicare beneficiaries also qualifies for Medicaid. These people are dually eligible, and the two programs coordinate.

Medicare pays first. Medicaid may then pick up:

• Medicare Part B premiums, and sometimes Part A premiums
• Deductibles, copayments and coinsurance
• Services Medicare does not cover, most significantly long-term care
• Some transport, dental and vision services, depending on the state

Dual eligibility comes in categories — full duals receive comprehensive Medicaid benefits, partial duals receive help with specific Medicare costs through a Medicare Savings Program.

Two practical consequences of being dually eligible:

1. Automatic Extra Help. You qualify for the Part D Low Income Subsidy without a separate application, which reduces or eliminates drug premiums, deductibles and copays.
2. D-SNP plans. Dual Eligible Special Needs Plans are Medicare Advantage plans built specifically for dually eligible members, coordinating both programs in one plan with extra benefits and care coordination. They are not available everywhere, and where they are, they are frequently the right answer.

Dually eligible people also get additional opportunities to change plans during the year, rather than being restricted to the Annual Enrollment Period.

Medicare Savings Programs — the partial route

You do not have to qualify for full Medicaid to get help with Medicare costs. Medicare Savings Programs are state-administered and sit on a sliding scale:

Qualifying for any of these also confers automatic Extra Help for Part D. The income and asset limits vary by state and are revised annually, and a great many people who would qualify never apply — because nobody tells them the programs exist.

We screen for this in every review, at no charge. There is nothing in it for us; it is simply part of doing the job properly.

What to do if you think you might qualify

1. Check the Medicare Savings Program limits for your state. They are more generous than most people expect, and some states disregard assets entirely.
2. Apply through your state Medicaid agency, not through Social Security. In Massachusetts that is MassHealth.
3. Apply for Extra Help through Social Security if you are not automatically enrolled.
4. Ask about a D-SNP if you are dually eligible — the coordination is genuinely better than running two programs in parallel.

If you are not sure where you land, call us. The screening is free, it takes a few minutes, and if you qualify it changes what you pay every month for the rest of your life.