Insurance Curator Navigating the world of health insurance in the United States can feel like learning a new language. Two of the most commonly confused terms are Medicaid and Medicare. While they sound alike, they serve very different groups of people.
What is Medicaid? It is a joint federal and state program that provides free or low-cost health coverage to low-income individuals, families, children, pregnant women, the elderly, and people with disabilities. In contrast, Medicare is a federal program primarily for people aged 65 and older, regardless of income.
If you’ve ever mixed them up, you’re not alone. Understanding the difference is crucial for choosing the right coverage for yourself or a loved one. Let’s break it down in plain language.
What Is Medicaid? A Complete Overview
What is Medicaid? At its core, Medicaid is a government health insurance program designed to ensure that people with limited financial resources can access medical care. It was created in 1965 under the Social Security Act and has since become the largest source of health coverage in the United States.
Unlike Medicare, which is entirely federally funded, Medicaid is jointly funded by the federal government and individual states. Each state operates its own Medicaid program under federal guidelines, which means eligibility rules, covered services, and plan names can vary from state to state.
Who Qualifies for Medicaid?
Eligibility for Medicaid is primarily based on income relative to the Federal Poverty Level (FPL). However, other factors like age, disability status, pregnancy, and household size also play a role.
- Children and pregnant women with household incomes up to 138% FPL (or higher in some states).
- Adults under 65 in states that expanded Medicaid under the Affordable Care Act (ACA).
- Seniors (65+) who meet income and asset limits.
- Individuals with disabilities, including those receiving Supplemental Security Income (SSI).
In states that expanded Medicaid, adults aged 19–64 with incomes up to 138% FPL qualify. In non-expansion states, eligibility is more restrictive, often limited to parents, pregnant women, children, and people with disabilities.
What Services Does Medicaid Cover?
Medicaid offers a comprehensive set of mandatory benefits, such as:
- Inpatient and outpatient hospital care
- Physician services
- Laboratory and X-ray services
- Nursing facility services
- Early and Periodic Screening, Diagnostic, and Treatment (EPSDT) for children
- Family planning services
States may also provide optional benefits like prescription drugs, dental care, vision services, and physical therapy. This flexibility means coverage can look very different depending on where you live.
For a deeper dive into the nuts and bolts of this program, check out our complete guide: What Is Medicaid? a Complete Overview of This Government Health Insurance Program.
How Does Medicaid Differ from Medicare?
Now that we’ve answered “What is Medicaid?” let’s compare it side by side with Medicare. The two programs are designed for different populations and funded differently.
| Feature | Medicaid | Medicare |
|---|---|---|
| Purpose | Health coverage for low-income individuals of all ages | Health coverage for people 65+ and certain younger adults with disabilities |
| Administration | Joint federal and state (states set rules) | Federal government only |
| Funding | Federal and state taxes | Federal payroll taxes, premiums, and general revenue |
| Eligibility | Based on income and assets (no age requirement) | Based on age (65+) or disability (after 2 years of SSDI) |
| Cost to enrollees | Little to no premiums or deductibles | Monthly premiums, deductibles, and co-pays |
| Covered services | Broad, including long‑term care and personal care | Hospital, medical, and prescription drug coverage; limited long‑term care |
| Enrollment | Year‑round, open anytime | Initial enrollment at age 65, plus annual open enrollment periods |
Medicare is essentially an earned benefit. You pay into the system through payroll taxes during your working years, and you become eligible at age 65. It has four parts: Part A (hospital), Part B (medical), Part C (Medicare Advantage), and Part D (prescription drugs).
Medicaid, on the other hand, is needs‑based. There is no premium or cost if your income is low enough. It often covers services that Medicare does not, such as nursing home care, home‑based personal care, and transportation to medical appointments.
Can Someone Have Both Medicaid and Medicare?
Yes. About 12 million people in the U.S. are “dual eligible” — they qualify for both programs. Medicare is the primary payer, and Medicaid picks up the remaining costs, including premiums, deductibles, and co‑pays. This combination is often called Medicare‑Medicaid dual enrollment and provides the most comprehensive coverage.
For example, a 70‑year‑old with a low income and limited savings would have Medicare Part A and B. Medicaid would cover their Part B premium and pay for services not covered by Medicare, such as long‑term care.
Medicaid vs. Medicare: Real‑World Examples
To make the difference crystal clear, consider these two scenarios:
-
Sofia, age 30, unemployed, income $12,000/year – Sofia qualifies for Medicaid in an expansion state. She pays nothing for doctor visits, hospital stays, and prescription drugs. She does not qualify for Medicare because she is under 65 and does not have a disability that meets the 2‑year waiting period.
-
Carlos, age 67, retired, Social Security income $1,500/month – Carlos automatically enrolled in Medicare Part A and bought Part B. He pays a monthly premium and a deductible. He does not qualify for Medicaid because his income exceeds the limit in his state.
These scenarios highlight why understanding what is Medicaid versus Medicare can save thousands of dollars and prevent gaps in care.
Common Misconceptions About Medicaid
Even after years of public awareness, confusion persists. Let’s clear up a few myths.
Myth: Medicaid is only for children.
Fact: Adults, seniors, and people with disabilities make up a large portion of the program. In fact, Medicaid covers about 1 in 5 Americans.
Myth: If you have Medicare, you don’t need Medicaid.
Fact: Many low‑income seniors benefit from having both. Medicaid can cover Medicare premiums and out‑of‑pocket costs, plus extra benefits like dental and vision.
Myth: Medicaid is the same in every state.
Fact: States have wide latitude in setting eligibility and benefits. Move from New York to Texas, and your Medicaid coverage could change dramatically.
How to Apply for Medicaid
Applying for Medicaid is generally free and can be done at any time. The process varies by state, but common steps include:
- Determine your eligibility using the Healthcare.gov tool or your state’s Medicaid agency.
- Gather needed documents – proof of income, identification, Social Security number, citizenship or immigration status.
- Submit an application online (Healthcare.gov or state portal), by phone, by mail, or in person.
- Wait for a determination – most states respond within 45 days (90 if disability is involved).
In expansion states, the application also covers potential eligibility for premium tax credits and cost‑sharing reductions through the ACA marketplace.
The Future of Medicaid and Its Role in Health Insurance
The conversation around what is Medicaid is evolving. The program has become a political flashpoint, with debates over work requirements, block grants, and expansion. As of 2025, 40 states and D.C. have expanded Medicaid under the ACA. The remaining 10 states have not, leaving a coverage gap for millions of low‑income adults.
Experts predict that Medicaid will continue to be a cornerstone of the U.S. health insurance system, especially as the population ages and long‑term care costs rise. For anyone navigating the system, understanding Medicaid is no longer optional — it’s essential.
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Frequently Asked Questions
What is the main difference between Medicaid and Medicare?
The main difference is the target population. Medicaid is for people with low income and limited assets, regardless of age. Medicare is primarily for people aged 65 and older, and for younger individuals with certain disabilities.
Can I have both Medicaid and Medicare?
Yes. If you are eligible for both, you are “dual eligible.” Medicare pays first for covered services, and Medicaid can help with premiums, deductibles, and extra services like long‑term care.
Is free health insurance from Medicaid really free?
In most cases, there are no monthly premiums and very low or no deductibles. However, some states may charge small co‑payments for certain services. People with higher incomes may pay a small premium in some states.
Does Medicaid cover long-term care?
Yes. Medicaid is the largest payer for nursing home care in the U.S. It also covers home‑ and community‑based services for seniors and people with disabilities. Medicare generally does not cover long‑term custodial care.
How do I know if my state expanded Medicaid?
You can check the Medicaid expansion status on Healthcare.gov or your state’s health department website. As of 2025, 40 states plus D.C. have expanded. If your state has not expanded, you may still qualify through other eligibility categories.
What happens if I move to another state on Medicaid?
Medicaid is state‑specific. If you move, you must reapply in your new state of residence. Your coverage from the previous state will end, and you may face a gap if the new state has different eligibility rules.
Understanding what is Medicaid is the first step toward making informed decisions about your health insurance options. Whether you’re evaluating coverage for yourself, a parent, or a child, knowing how Medicaid differs from Medicare empowers you to choose wisely. For more in‑depth guides, explore other articles in our health insurance resource center.