Medicare vs Medicaid: Which One Covers You

Forty-three million Americans are enrolled in Medicare. Over ninety million are on Medicaid. And a remarkable number of people in both programs aren’t entirely sure which one they’re on, or what the difference actually is.

I don’t say that to embarrass anyone. I say it because these two programs were designed by the federal government, named almost identically, and explained in documents that read like legal briefs. Of course people get them confused.

If you’re here because you or someone you love is approaching 65, facing a serious illness, helping an aging parent, or trying to figure out what you actually qualify for, you’re in the right place. Let me walk you through this the way I would if we were sitting across from each other at a kitchen table.

The single biggest difference: how you qualify

Medicare is age-based (and sometimes disability-based). Medicaid is income-based. That’s the core of it.

Medicare doesn’t care how much money you have. A retired surgeon with a $4 million portfolio and a retired school janitor with $800 a month in Social Security both get Medicare at 65. The program doesn’t ask about your bank account. It asks about your age and your work history, because Medicare is funded largely through payroll taxes you paid during your working years. If you worked at least 10 years (40 quarters) in jobs that paid into the system, you’ve already earned your Part A hospital coverage. No monthly premium for Part A. You paid it in advance.

Medicaid is different in almost every way. It’s a needs-based program for people with low incomes and, in many cases, limited assets. Your financial situation is the point. And unlike Medicare, which is entirely federal, Medicaid is a federal-state partnership, which means the rules about who qualifies, what’s covered, and how much you pay vary significantly depending on where you live. A single person in California might qualify for Medicaid (called Medi-Cal there) with a higher income than someone in Texas would. This variation trips people up constantly.

What Medicare actually covers (and what it doesn’t)

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Medicare has four main parts, and honestly, the lettering system is one of the more confusing things about it.

Part A covers hospital stays, skilled nursing facility care, hospice, and some home health care. Most people don’t pay a premium for Part A if they’ve worked long enough.

Part B covers outpatient services: doctor visits, preventive screenings, lab work, durable medical equipment (things like walkers and wheelchairs), and some home health care. Part B does have a monthly premium. In 2024, the standard premium is $174.70 per month, though higher-income enrollees pay more through what’s called IRMAA (Income-Related Monthly Adjustment Amount).

Part D is prescription drug coverage. It’s sold through private insurance companies that Medicare has approved. Premiums, deductibles, and drug formularies (the lists of covered drugs) vary by plan.

Part C, also called Medicare Advantage, is an alternative way to get your Medicare benefits through a private insurer instead of directly through the federal government. Many Advantage plans bundle Parts A, B, and D together and sometimes include extras like dental, vision, or hearing coverage.

Here’s what catches a lot of people off guard: Medicare does not cover everything. Routine dental care, routine vision exams, hearing aids, and long-term custodial care (the kind of help you might need in a nursing home if you can’t bathe or dress yourself) are largely not covered. That gap is significant. It’s why Medigap (Medicare Supplement Insurance) policies exist. Those are private plans sold to fill in Medicare’s cost-sharing holes.

What Medicaid actually covers (and why it’s more generous in some ways)

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What's the Difference Between Medicare and Medicaid? · AARP on YouTube

Medicaid often covers things Medicare doesn’t, particularly long-term care. This is where things get genuinely surprising.

If you need to live in a nursing home because you can no longer care for yourself, and you qualify for Medicaid, Medicaid will pay for it. Medicare will not, beyond a very limited skilled nursing facility stay after a qualifying hospital admission. For millions of middle-class Americans who end up needing nursing home care, the path goes like this: they spend down their savings paying privately, they eventually qualify for Medicaid, and then Medicaid takes over the bill. That “spend-down” process is painful and complicated, and a good elder law attorney can be worth every penny in that situation.

Medicaid also typically covers dental, vision, and hearing services for enrolled adults, though the depth of coverage varies by state. It covers doctor visits and hospital care too, usually with little or no cost-sharing for the enrollee. For families with children, pregnant women, and people with disabilities, Medicaid is often the primary source of health coverage.

One thing to understand: because Medicaid is partly funded by states, it goes by different names in different places. California has Medi-Cal. Massachusetts calls it MassHealth. Oregon calls it the Oregon Health Plan. Same basic federal framework, local variations everywhere.

The overlap: “dual eligibles”

About 12 million Americans are enrolled in both Medicare and Medicaid at the same time. They’re called dual eligibles, and they tend to be among the most vulnerable people in the country: low-income seniors, people who are elderly and have disabilities, people in long-term care facilities.

When someone has both, Medicaid typically acts as a “wrap-around” that covers Medicare’s cost-sharing. Medicare pays first, and Medicaid picks up some or all of the remaining costs, like deductibles and copays. Some dual eligibles also qualify for programs that pay their Medicare Part B premium entirely, which at $174.70 a month is not nothing.

If you think you or a family member might qualify for both, this is genuinely worth investigating. People leave real money on the table because they didn’t know to ask. Medicare.gov has a tool to check eligibility for these extra help programs, and your local State Health Insurance Assistance Program (SHIP) can walk you through it for free. SHIP counselors are not selling anything. That matters.

Who should be thinking about Medicaid even if they’re middle-class?

More people than you’d think.

Long-term care is the big reason. The average cost of a semi-private room in a nursing home in the United States was around $7,900 per month in 2023. Very few people can sustain that for long. Most private health insurance doesn’t cover it. Long-term care insurance can help but it’s expensive and comes with its own complications. At some point, many middle-class families find themselves looking at Medicaid as a realistic and necessary option, not a last resort for the destitute.

There’s also the question of your adult children potentially caring for you at home. Some states have Medicaid waiver programs that cover home and community-based care, and in some cases even compensate family caregivers. It’s complicated, it varies by state, and it’s not guaranteed, but it exists and many families don’t know to ask.

If you’re doing any kind of estate planning or thinking about how to protect assets as you age, a conversation with an elder law attorney about Medicaid planning is worth having sooner rather than later. Some strategies have look-back periods of five years, meaning transfers of assets need to happen well in advance to be effective. I’ve talked with too many families who learned this six months too late.

How to figure out what you qualify for

For Medicare: if you’re turning 65, you generally become eligible regardless of income. You can enroll during your Initial Enrollment Period, which starts three months before the month you turn 65 and runs through three months after. If you’re still working and have employer coverage, you may be able to delay without penalty. Missing enrollment windows can result in permanent premium surcharges, so pay attention to timing.

For Medicaid: start with your state’s Medicaid agency. You can also apply through your state’s health insurance marketplace at healthcare.gov, which will screen you for Medicaid eligibility. Income limits are based on your household size and what’s called MAGI (Modified Adjusted Gross Income) for most groups, though the rules for people 65 and older and people in long-term care are more complex and often involve asset tests.

If any of this is giving you a headache, call your local SHIP. It’s free, it’s non-commercial, and these counselors know their states’ rules cold.

These two programs have helped hundreds of millions of people since Medicare and Medicaid were both signed into law in 1965, the same bill, the same day, by President Lyndon Johnson. Sixty years later they’re still the backbone of health coverage for older and lower-income Americans. They’re worth understanding. And if you’re not sure where you stand, asking for help from SHIP, from Medicare.gov, from a trusted benefits counselor, isn’t a sign that you’ve missed something. It’s just smart.

Sources & References

• Medicare.gov, What is Medicare?, Explains Medicare eligibility, coverage, and who qualifies
• CMS.gov, Medicare-Medicaid Coordination, Explains dual eligibility and how programs interact

Photo: SHVETS production via Pexels

This article is for informational purposes only. Medicare rules change annually. Always verify current plan details at Medicare.gov or by calling 1-800-MEDICARE (1-800-633-4227). This site does not sell insurance or recommend specific plans.

Recommended Resources

Disclosure: As an Amazon Associate, we earn a small commission from qualifying purchases at no extra cost to you. We only recommend products that genuinely support the topics covered in this article.

• Medicare For Dummies (~$22), The definitive consumer guide to Medicare, enrollment windows, Part A/B/C/D, and supplement plans.
• Get What’s Yours for Medicare (~$17), Maximize your Medicare benefits and minimize out-of-pocket costs. Covers Part D drug coverage gaps and Medigap in depth.