Medicare vs. Medicaid
What dementia families need to know about the two programs that pay for care — and the one gap between them that catches almost everyone off guard.
Medicare and Medicaid were both created in 1965, their names are nearly identical, and they are constantly confused — even by people who work in health care. But they do very different jobs, and understanding the difference is one of the most useful things you can do early in a dementia journey. Here's the short version:
- Medicare is health insurance based on age or disability. It's run by the federal government and works the same everywhere.
- Medicaid is health coverage based on income and financial need. It's funded by both federal and state government, and it runs differently in every state.
Many people with dementia end up qualifying for both — and together they cover far more than either does alone. We'll get to that.
Medicare — "I turned 65" or "I have a disability"
Who it's for
Almost everyone age 65 and older qualifies, as long as they or their spouse paid into Social Security long enough through years of work. Some younger people qualify too, through a long-term disability or end-stage kidney disease. One thing that surprises people: income doesn't matter for Medicare. A wealthy retiree and someone who worked for minimum wage get the same Medicare.
The four parts, briefly
Part A — hospital insurance. Covers inpatient hospital stays, hospice, and a limited stretch of skilled nursing or rehab in a facility after a qualifying hospital stay — but only for short-term recovery, not long-term custodial care. It also covers some home health care when a person is homebound and needs skilled nursing or therapy.
Part B — medical insurance. Doctor visits, outpatient care, lab tests, preventive services, durable medical equipment like walkers and wheelchairs, mental health care, and — importantly for dementia — cognitive assessments and the workups used to diagnose memory loss.
Part C — Medicare Advantage. Private plans that bundle Parts A and B (usually D too) into one package. They often add extras like dental, vision, hearing, or transportation, but in exchange they limit which doctors and hospitals you can use and may require prior approval for certain services.
Part D — prescription drugs. Part D covers outpatient prescription drugs, including dementia medications. There's now a hard annual cap on out-of-pocket drug spending: once you hit that limit, your covered prescriptions cost nothing for the rest of the year. (The cap amount is set each year and rises with inflation — check medicare.gov for the current figure.) Medicare also offers the Medicare Prescription Payment Plan, which lets you spread your out-of-pocket drug costs evenly across the year instead of facing a large bill at the pharmacy counter. And low-income beneficiaries may qualify for "Extra Help," which reduces drug costs to zero or near-zero.
The big gap
Here it is again, because it's the heart of the matter: Medicare pays for medical care — doctors, hospitals, drugs, short-term rehab, hospice. It does not pay for the long-term, non-medical help that dementia care is mostly made of: ongoing assistance with daily activities, supervision, assisted living, memory care, adult day programs, or an in-home personal aide (unless that aide is part of a short skilled-care plan). For that, families turn to Medicaid, long-term care insurance, VA benefits, or their own savings.
Medicaid — "I need financial help"
Who it's for
Medicaid is based on both low income and limited assets, and the rules vary quite a bit from state to state. For older adults, the income limits are often stricter than for younger people, and there's usually an asset test — countable savings have to be below a low threshold, often just a couple thousand dollars for one person. Some things you own are generally not counted, including your primary home, one car, and personal belongings. Because the details differ by state, the only reliable source for the current numbers is your state's Medicaid office.
What Medicaid covers that Medicare doesn't
This is where Medicaid becomes essential for dementia families:
- Long-term nursing home care. Medicaid is the single largest payer of nursing home care in the country — most nursing home residents rely on it.
- Home & Community-Based Services (HCBS). Personal care aides, adult day programs, respite so family caregivers can rest, care coordination, transportation, and sometimes home modifications like grab bars and ramps.
- Hands-on personal care — help with bathing, dressing, toileting, and eating — the exact daily support Medicare leaves out.
The "spend-down" reality
Many middle-income families don't qualify for Medicaid at first. But long-term care is expensive — nursing home care can run from tens of thousands to well over a hundred thousand dollars a year — and those costs can deplete a lifetime of savings surprisingly fast. As savings fall to the state's threshold, a person who didn't qualify before becomes eligible. This is often called "spending down" to Medicaid.
HCBS waivers — staying at home
Most states run special Medicaid "waiver" programs designed to help people stay in their own homes instead of moving to a nursing home, by paying for the in-home and community services listed above. The catch: availability and waiting lists vary dramatically by state, and some lists are long. Because the wait can matter as much as the eligibility, it's worth asking early — your local Area Agency on Aging or state Medicaid office can tell you what exists where you live.
Having both — "dual eligibility"
A great many people with dementia qualify for Medicare and Medicaid at the same time. They're often called "dual eligibles," or "duals," and it's the most complete coverage available.
When someone has both, the programs divide the work: Medicare stays the primary insurer for doctors, hospital stays, and prescriptions, while Medicaid fills in the gaps — helping with Medicare's premiums and cost-sharing, and covering the long-term care, home-and-community services, and personal care that Medicare doesn't.
Medicare Savings Programs
Even people who don't qualify for full Medicaid may get help through a Medicare Savings Program (MSP), which can pay Medicare premiums and sometimes other cost-sharing. There are tiers — you'll see them called QMB, SLMB, and QI — that kick in at rising income levels, with QMB offering the most help. The income and asset limits change every year, so check the current ones rather than relying on a figure you read somewhere; your State Health Insurance Assistance Program (below) can walk you through it. Worth knowing: some states have dropped the asset test for these programs entirely.
Hospice and dementia
Medicare's hospice benefit becomes available when a physician certifies that someone likely has about six months or less to live. It covers comfort-focused care — pain and symptom management, counseling, and respite for caregivers — and can be provided wherever the person lives, whether that's home, a nursing home, or a hospice facility.
Here's the honest nuance for dementia: predicting that six-month window is genuinely hard when the decline is slow and uneven, so families are often referred to hospice very late — sometimes only days before the end. That's a shame, because hospice is consistently linked to better symptom control and higher family satisfaction. It can be worth asking the care team about hospice when your loved one:
- No longer recognizes close family
- Has lost the ability to walk, or to speak in a meaningful way
- Has recurring infections, like pneumonia or urinary tract infections
- Has real trouble eating or swallowing
- Is declining steadily despite good medical care
Choosing hospice is not "giving up." It's a decision to focus the care on comfort and quality of life.
Steps for families
- Enroll in Medicare on time. Sign up around the 65th birthday (or when disability qualifies). Late enrollment can bring lasting penalties.
- Check Medicaid eligibility even if income seems "too high." The rules are state-specific and the spend-down path means many families eventually qualify. Your state Medicaid office or Area Agency on Aging can tell you.
- Ask about HCBS waiver programs in your state — the in-home help and adult day services that can keep your loved one at home longer. Ask early; lists can be long.
- Consult an elder law attorney before any financial moves. Medicaid planning is complex, and look-back mistakes are expensive to undo.
- Look into Medicare Savings Programs if premiums and copays are a strain, even without full Medicaid.
- Don't wait too long to ask about hospice. Many families wish they'd started sooner.
- Keep records of everything — diagnoses, medications, bills, and insurance letters. You'll need them for applications and appeals.
Side-by-side
| Medicare | Medicaid | |
|---|---|---|
| Eligibility is based on | Age (65+) or disability | Income and limited assets |
| Who runs it | Federal government | Federal + state (varies by state) |
| Monthly premiums | Yes (Parts B and D) | Little to none |
| Doctors & hospital care | Yes | Yes |
| Prescription drugs | Yes (Part D) | Yes |
| Skilled nursing / rehab | Up to 100 days after a qualifying hospital stay | Yes |
| Long-term custodial care key difference | No | Yes |
| In-home personal care | Very limited | Yes (through HCBS) |
| Adult day programs | No | Often yes |
| Dental, vision, hearing | Only with Medicare Advantage | Varies by state |
No dollar amounts here on purpose — premiums, limits, and thresholds change every year. Always confirm current figures with the official source.
Who to call
- Medicare — 1-800-MEDICARE (1-800-633-4227), medicare.gov
- Your state Medicaid office — search "[your state] Medicaid" to find it
- State Health Insurance Assistance Program (SHIP) — 1-877-839-2675. Free, unbiased counseling on Medicare and Medicaid.
- Eldercare Locator — 1-800-677-1116, eldercare.acl.gov. Connects you to local aging services.
- Alzheimer's Association 24/7 Helpline — 1-800-272-3900