Medicare and Medicaid have similar names, and both help people access health care in the United States. That makes them easy to confuse—especially if you are learning about U.S. government benefits for the first time.
But they are different programs. Medicare primarily provides health insurance for people age 65 and older and certain younger people with disabilities or specific conditions. Medicaid helps eligible people with limited income and, in some cases, limited resources pay for health care.
Some people can qualify for both programs.
This guide explains the main differences, what each program may cover, and where to find official application information.
What Is Medicare?
Medicare is a federal health insurance program. It is primarily for people age 65 and older, although some people under 65 may qualify because of a disability or certain medical conditions.
Medicare is divided into different parts. Each part helps cover different types of services, and the costs depend on the coverage and circumstances.
Being eligible for Medicare does not necessarily mean every medical expense is free. Premiums, deductibles, copayments, or coinsurance may apply.
For an official introduction, visit USA.gov’s Medicare guide.
Who May Qualify for Medicare?
A person may be eligible for Medicare if they meet the applicable requirements and are:
- Age 65 or older
- Under 65 with certain disabilities
- Living with end-stage renal disease, or ESRD
- Living with amyotrophic lateral sclerosis, or ALS
Eligibility and enrollment details depend on the person’s circumstances. For example, some people are enrolled automatically, while others need to sign up.
If you are approaching age 65, it is important to check your enrollment timing early. Missing an applicable enrollment period may cause a delay in coverage or a late enrollment penalty.
The Medicare sign-up guide can help you understand your next steps.
What Are the Different Parts of Medicare?
Medicare is often described using four parts: A, B, C, and D.
Medicare Part A: Hospital Insurance
Part A helps cover certain hospital-related services, including eligible inpatient hospital care, skilled nursing facility care, hospice care, and some home health care.
Coverage has conditions and limits. For example, Medicare does not generally cover long-term custodial care simply because a person needs help with daily activities.
Many people do not pay a monthly Part A premium because of their or their spouse’s qualifying work history. Others may need to pay a premium.
Medicare Part B: Medical Insurance
Part B helps cover eligible services such as doctor visits, outpatient care, certain medical equipment, and many preventive services.
Most people pay a monthly Part B premium. Other costs can also apply depending on the service.
Medicare Part C: Medicare Advantage
Medicare Advantage is an alternative way to receive Medicare coverage through a Medicare-approved private plan.
These plans include Part A and Part B coverage and usually include Part D prescription drug coverage. Plans may offer additional benefits, but their provider networks, costs, and rules can differ.
Medicare Part D: Prescription Drug Coverage
Part D helps cover eligible prescription drugs. It is offered through private plans that follow Medicare’s rules.
The medicines covered and the costs can vary by plan, so it is important to review a plan’s details before enrolling.
For a comparison of Medicare’s parts, see Medicare.gov’s quick guide.
What Is Medicaid?
Medicaid is a joint federal and state program that helps eligible people pay for health care. It generally serves people with limited income, although eligibility rules depend on the group and, in some cases, resources and other requirements.
States administer their Medicaid programs within federal rules. This means eligibility and certain benefits can differ depending on where you live.
Medicaid can provide free or low-cost coverage to eligible people, but the services covered and any costs depend on the state and the individual’s circumstances.
Visit USA.gov’s Medicaid and CHIP guide for official information.
Who May Qualify for Medicaid?
Depending on state rules and individual circumstances, Medicaid may be available to eligible:
- Adults with limited income
- Children
- Pregnant people
- Older adults
- People with disabilities
The agency may consider factors such as income, household size, age, disability, residency, and citizenship or immigration status.
Not every state has the same eligibility rules, and being in one of these groups does not automatically guarantee coverage. Your state Medicaid agency can explain which rules apply to you.
Medicare vs. Medicaid: Key Differences
| Question | Medicare | Medicaid |
|---|---|---|
| What is it? | A federal health insurance program | A joint federal and state health coverage program |
| Who may qualify? | Generally people 65 or older and certain younger people with disabilities or specific conditions | Eligible people with limited income who meet other applicable requirements |
| Who administers it? | Federal government, with private plans involved in some coverage options | State agencies under federal rules |
| Are there costs? | Premiums and other costs may apply | Costs vary; eligible coverage can be free or low-cost |
| Can it cover long-term services? | Coverage is limited and generally does not include long-term custodial care | May cover eligible long-term services and supports, subject to rules |
This table is a general overview. Your actual coverage and costs depend on your eligibility, state, plan, and the services you receive.
Can You Have Both Medicare and Medicaid?
Yes. Some people qualify for both programs. This is often called dual eligibility.
When a person has both Medicare and full Medicaid coverage, Medicare generally pays first for Medicare-covered services. Medicaid may help with certain remaining costs and may cover some services Medicare does not normally cover, subject to the applicable rules.
Having both programs does not mean every service is automatically covered. Check your specific coverage and ask your state Medicaid agency or Medicare if you are unsure.
Medicare.gov’s guide to Medicare and Medicaid explains how the programs can work together.
How to Apply for Medicare or Medicaid
The application process is different for each program.
How to Apply for Medicare
Some people are enrolled automatically, while others must sign up. For many people approaching age 65, the initial enrollment period lasts seven months: it starts three months before the month they turn 65, includes their birthday month, and ends three months afterward.
Other enrollment periods and special rules may apply, including for people with qualifying employer coverage or certain disabilities.
Start with USA.gov’s Medicare page or Medicare.gov’s sign-up guide. These resources explain when and how to contact Social Security or take other steps.
How to Apply for Medicaid
You can apply for Medicaid through your state Medicaid agency. You can also submit an application through the Health Insurance Marketplace, which can forward your information to the state if someone in your household appears eligible.
Medicaid applications can generally be submitted throughout the year. Your state agency will review the application and tell you what information or documents are needed.
Start with USA.gov’s Medicaid application guide.
What Is CHIP?
The Children’s Health Insurance Program, or CHIP, provides health coverage for eligible children. In some cases, a child may qualify for CHIP even if household income is too high for Medicaid.
CHIP rules and costs vary by state. If you are looking for coverage for a child, the state agency or Health Insurance Marketplace can help identify the options available to your family.
What Costs Should You Check?
Health coverage can involve several types of costs. Before choosing or using a plan, make sure you understand:
- Premium: An amount you may pay regularly for coverage.
- Deductible: An amount you may need to pay for covered services before certain coverage begins.
- Copayment: A fixed amount you may pay for a covered service.
- Coinsurance: A percentage of a covered cost you may need to pay.
- Out-of-pocket costs: Expenses you pay yourself under the coverage rules.
The amounts and rules vary. For Medicare Advantage or Part D, also check provider networks, covered medications, and plan-specific requirements.
If you have limited income, programs such as Medicare Savings Programs or Extra Help may help eligible people with certain costs. See USA.gov’s guide to help with medical bills.
Common Mistakes to Avoid
Assuming Medicare and Medicaid Are the Same
The programs have different eligibility rules and application processes. A person may qualify for one, both, or neither.
Assuming Medicare Covers Every Expense
Medicare helps cover eligible services, but premiums, deductibles, and other costs may still apply. Some services may not be covered.
Waiting Too Long to Check Medicare Enrollment
Enrollment timing matters. Check the period that applies to you before making a decision, especially if you are approaching age 65.
Assuming Medicaid Rules Are Identical in Every State
State programs differ. Check the current information for the state where you live.
Sharing Personal Information With an Unverified Caller
Be careful with unexpected calls or messages requesting your Medicare number, Social Security number, or payment details. Contact the relevant agency through its official website or published phone number.
Frequently Asked Questions
Is Medicare only for people over age 65?
No. Medicare also covers certain younger people who qualify because of a disability, ESRD, or ALS.
Is Medicaid the same in every state?
No. States administer Medicaid within federal rules, and eligibility and certain benefits can differ.
Can I have both Medicare and Medicaid?
Yes, if you meet the eligibility requirements for both. This is commonly called dual eligibility.
Is Medicare completely free?
Not necessarily. Many people have premiums or other costs, depending on their coverage and circumstances.
Can I apply for Medicaid at any time?
Medicaid applications can generally be submitted throughout the year. Contact your state agency for the current process and eligibility rules.
Looking for other types of assistance? Read our guide to finding U.S. government benefits.
Final Thoughts
Medicare and Medicaid both help people access health care, but they serve different purposes and have different rules. Medicare is primarily connected to age or qualifying disability, while Medicaid generally considers limited income and other eligibility requirements.
If you are exploring coverage, start with official sources and check the rules for your own situation. Taking time to understand enrollment dates, benefits, and costs can help you make a more informed decision.
This article is for general educational purposes and is not medical, legal, financial, or benefits advice. Program rules and coverage can change. Check current information with Medicare, your state Medicaid agency, or a qualified professional.