Medicaid is the state-run program. If someone refers to “state insurance,” they almost certainly mean Medicaid, which is managed by individual state governments and primarily covers people with lower incomes. Medicare, by contrast, is a federal program with uniform rules nationwide, and it covers people 65 and older or those with certain disabilities.
Why Medicaid Is Called “State Insurance”
Medicaid is jointly funded by the federal government and each state, but the states are the ones actually running the show. Each state operates its own Medicaid program, sets its own income limits, decides which services to cover beyond a federal minimum, and processes claims through its own systems. That’s why Medicaid looks different depending on where you live. California’s version (called Medi-Cal) doesn’t work exactly like Texas Medicaid or New York Medicaid.
The federal government sets broad rules that every state must follow, and it chips in a significant share of the funding. But your state’s health department handles enrollment, verifies your eligibility, contracts with insurance companies or providers, and monitors the program day to day. States even train their own staff and run their own eligibility systems. This is why people commonly call Medicaid “state insurance”: your state government is the entity actually providing and managing your coverage.
How Medicare Differs as a Federal Program
Medicare is run entirely by the federal government through the Centers for Medicare & Medicaid Services (CMS). It has set standards for costs and coverage that apply the same way whether you live in Florida or Montana. Your state government has no role in deciding what Medicare covers or what it costs you.
Medicare eligibility is based on age or medical condition, not income. You qualify at 65 if you’ve paid into Social Security long enough. You can also qualify younger if you’ve received disability benefits for 24 months, or immediately if you’re diagnosed with ALS (Lou Gehrig’s disease). People who need regular dialysis or a kidney transplant for end-stage kidney disease are also eligible regardless of age.
Who Qualifies for Each Program
The easiest way to remember the split: Medicare is about age and disability, Medicaid is about income.
For Medicaid, your state determines the income cutoff, which is calculated as a percentage of the federal poverty level. Some states set generous thresholds, while others keep them low. Eligibility also depends on factors like citizenship or immigration status and state residency. Because states have so much flexibility, a person who qualifies for Medicaid in one state might not qualify after moving to another.
For Medicare, the rules are the same everywhere. Turn 65 with enough work history, and you get Part A (hospital coverage) premium-free. Part B (outpatient and doctor visits) is available for a monthly premium. Younger people with disabilities face a 24-month waiting period after they start receiving disability benefits before Medicare kicks in, with the exception of ALS, which has no waiting period at all.
What Each Program Covers
Medicare is split into parts. Part A covers hospital stays. Part B covers doctor visits, lab work, and outpatient care. Part D covers prescription drugs. You can also enroll in a Medicare Advantage plan (Part C), which bundles these together through a private insurer but still operates under federal rules.
Medicaid coverage varies by state but tends to be broader in some respects. Many state Medicaid programs cover long-term care, dental, vision, and transportation to medical appointments, services that Medicare either doesn’t cover or covers only in limited situations. Out-of-pocket costs under Medicaid are typically very low or zero, while Medicare enrollees often pay premiums, deductibles, and copays.
When People Have Both
Some people qualify for both programs at the same time. These “dual eligible” individuals are typically low-income seniors or people with disabilities who meet Medicare’s age or medical criteria and Medicaid’s income criteria simultaneously. About 12 million Americans fall into this category.
For dual eligible individuals, Medicare acts as the primary insurer, covering hospital and doctor costs first. Medicaid then fills in the gaps, often picking up premiums, copays, and services Medicare doesn’t cover, like long-term nursing home care. Coordinating between a federal program and a state program can be complicated, which is why CMS has a dedicated office focused on aligning benefits and reducing confusion for people enrolled in both.
Quick Way to Tell Which One You Have
If your coverage came through your state’s health department or a state marketplace based on your income, it’s Medicaid. The program may go by a state-specific name: Medi-Cal in California, MassHealth in Massachusetts, AHCCCS in Arizona. If your red, white, and blue insurance card says “Medicare” and you qualified through age or a disability determination from Social Security, that’s the federal program. If you’re unsure, look at who issued your card. A state agency means Medicaid. CMS or Social Security means Medicare.