Medicare vs. Medicaid — What's the Difference?

⚖️ The Key Differences at a Glance

Medicare and Medicaid are both government health insurance programs, but they serve different populations, are funded differently, and are administered by different entities. The confusion between them is understandable — both start with "Med" and both were signed into law in 1965 under the Social Security Act. But they are fundamentally different programs.

Feature	Medicare	Medicaid
Who it's for	People 65+, some younger with disabilities	Low-income individuals and families
Funded by	Federal government (payroll taxes + premiums)	Federal + state governments
Administered by	Federal government (CMS)	Each state individually
Eligibility basis	Age or disability status	Income and household size
Premium cost	Part B: ~$190/month; Part D: varies	Usually free or very low cost
Coverage varies by state?	No — uniform nationwide	Yes — each state sets its own rules

🏛️ Medicare: Federal Health Insurance

Medicare is a federal program that provides health coverage primarily based on age (65+) or disability status, regardless of income. It's funded by payroll taxes paid during working years plus monthly premiums paid by beneficiaries.

Medicare has four parts:

Part A (Hospital): Covers inpatient care, skilled nursing, hospice — usually premium-free
Part B (Medical): Covers outpatient care, preventive services, DME — monthly premium required
Part C (Medicare Advantage): Private plan alternative bundling A+B, usually including Part D
Part D (Drugs): Outpatient prescription drug coverage

For a complete overview, see our Medicare 101 guide.

🤲 Medicaid: State-Federal Safety Net

Medicaid is a joint federal-state program that provides health coverage based primarily on income, not age. Each state administers its own Medicaid program under federal guidelines, which means eligibility rules, covered benefits, and program names vary by state.

Medicaid typically covers:

Low-income adults (in states that expanded Medicaid under the ACA)
Children and pregnant women
People with disabilities
Seniors in nursing homes or needing long-term care

Medicaid often covers services that Medicare does not, including:

Long-term care (nursing home stays beyond 100 days)
Personal care services
Transportation to medical appointments
Dental and vision care (varies by state)

🤝 Dual Eligibility: When You Qualify for Both

Approximately 12 million Americans qualify for both Medicare and Medicaid — they're called "dual-eligible" beneficiaries. This population tends to be older, sicker, and lower-income than those on either program alone.

When someone is dual-eligible:

Medicare is the primary payer for most medical services
Medicaid covers the gaps — paying for Medicare premiums, deductibles, copays, and services Medicare doesn't cover (like long-term care and dental)
Prescription drugs are covered under Medicare Part D, with Medicaid providing Extra Help/LIS to reduce costs

Dual-eligible beneficiaries are eligible for D-SNP plans (Dual Eligible Special Needs Plans), which coordinate benefits between both programs and often provide extensive supplemental benefits. See our SNP guide for details.

💡 Broker tip: Dual-eligible beneficiaries can enroll in or change D-SNP plans on a monthly basis — they have a continuous Special Enrollment Period. This gives brokers the flexibility to help these clients find better coverage at any time, not just during AEP.

💡 Medicare Savings Programs (MSPs)

For beneficiaries who don't qualify for full Medicaid but have limited income, Medicare Savings Programs help pay Medicare costs:

QMB (Qualified Medicare Beneficiary): Medicaid pays Part A and B premiums, deductibles, coinsurance, and copays. Income limit: 100% FPL.
SLMB (Specified Low-Income Medicare Beneficiary): Medicaid pays the Part B premium only. Income limit: 120% FPL.
QI (Qualifying Individual): Medicaid pays the Part B premium only (limited funding, first-come-first-served). Income limit: 135% FPL.
QDWI (Qualified Disabled Working Individual): Medicaid pays the Part A premium for disabled individuals who lost premium-free Part A when they returned to work.

⚠️ Important: Applying for an MSP automatically triggers an application for Extra Help (LIS) for Part D drug costs. This can save beneficiaries thousands of dollars per year on prescription medications.