Medicaid is run by states, but the federal government pays for much of it

Medicaid is neither purely state-run nor purely federal — it is a partnership where each level of government has different responsibilities. The federal government sets the basic rules and pays a share of the cost (usually between 50 and 75 percent, depending on the state's income level). Each state then designs its own program within those federal rules, decides who gets coverage, what services are covered, and how much providers are paid.

This split structure means the program you get depends on where you live. A person with the same income might may have access to for Medicaid in one state and not in another. The same service might be covered in one state's program but not in a neighboring state's. This is why you cannot call a single federal Medicaid office — you have to contact your state's program directly.

Key Takeaways

  • The federal government sets minimum standards for Medicaid and pays a percentage of costs, but each state runs its own program with its own rules.
  • Income limits, covered services, and payment rates to doctors differ by state, so your coverage depends on which state you live in.
  • You contact your state's Medicaid office or your state's health department to learn about coverage in your area, not a federal agency.
  • States can expand or restrict their Medicaid programs within federal guidelines, and these changes can happen year to year.

What the federal government controls

The federal government, through the Centers for Medicare and Medicaid Services (CMS), sets the floor — the minimum standards every state program must meet. Federal law requires that Medicaid cover certain groups (like children under 19, pregnant people, and people over 65 with very low income) and certain services (like hospital care, doctor visits, and lab work). The federal government also sets rules about how fast claims must be paid, how people can appeal denials, and what protections patients have.

The federal government also funds the program. It pays states a matching rate based on a formula that accounts for state income levels. Wealthier states get a smaller federal match (as low as 50 percent of costs), while poorer states get a higher match (up to about 75 percent). This means the federal government is always paying a significant share, but the state must cover the rest from its own budget.

What each state controls

Within the federal framework, states have broad power to shape their programs. A state decides whether to cover people above the federal minimum income thresholds — this is why some states cover childless adults and others do not. A state decides whether to cover dental care, vision care, hearing aids, or mental health services beyond what federal law requires. A state sets the income limit for each group (a parent in one state might may have access to at $1,500 a month; in another state, the limit might be $800).

States also decide how much to pay doctors, hospitals, and other providers. A state might pay a primary care doctor $40 per visit or $60 per visit. These payment rates affect which providers accept Medicaid and how easy it is to find a doctor. States can also change their programs year to year — expanding coverage one year and restricting it the next, depending on the state budget and political priorities.

Why this matters when you look for coverage

The state-federal split means you cannot get a single answer to "Am I covered by Medicaid?" without knowing which state you live in. Two people with identical income and family size might have completely different coverage depending on whether they live in State A or State B. A service covered in your state might not be covered if you move to another state.

It also means that changes to Medicaid happen at the state level. When you hear that a state is "expanding Medicaid" or "cutting Medicaid," that state is changing its own program rules within the federal framework. These changes can take effect quickly or slowly depending on the state's process, and they can affect whether you remain covered or lose coverage.

How to find your state's specific rules

Because your coverage depends on your state's program, you need to contact your state directly. Most states have a Medicaid office within the state health department or a separate state agency. You can find your state's Medicaid program by searching "[your state] Medicaid" or by calling your state's health department main line and asking for the Medicaid office.

Your state's Medicaid office can tell you the income limits for your household size, which services are covered, how to report changes in income or family size, and how to appeal if you are denied coverage. Some states also have local offices where you can apply in person. A few states have contracted with private companies to run parts of their Medicaid programs, but the state remains responsible for the program's rules and funding.

Federal rules that apply everywhere

Even though states run their own programs, certain federal rules apply in every state. All states must cover emergency services regardless of immigration status. All states must allow you to appeal a denial and get a hearing before an independent decision-maker. All states must process applications within a set timeframe (usually 45 days). All states must maintain confidentiality of your information.

If you believe your state is violating a federal Medicaid rule, you can file a complaint with CMS, the federal agency that oversees Medicaid. However, for questions about your state's specific income limits, covered services, or your own case, the state Medicaid office is the right place to start.

Frequently Asked Questions

Can I use my Medicaid from one state if I move to another state?

No. Medicaid is state-specific, so your coverage ends when you move. You must contact your new state's Medicaid program to see if you may have access to under that state's rules. Your new state may have different income limits and covered services. You should apply in your new state before your old coverage ends to avoid a gap.

Who do I call if I have a problem with my Medicaid?

Contact your state's Medicaid office first — they handle your case and can explain denials or changes to your coverage. If your state does not resolve the problem, you can file a complaint with the Centers for Medicare and Medicaid Services (CMS), the federal agency. Your state's Medicaid office can tell you how to file an appeal within your state.

Can the federal government take away my Medicaid coverage?

The federal government sets the rules but does not manage individual cases. Your state can remove you from Medicaid if you no longer meet your state's income or other requirements. The federal government can change the rules that states must follow, but states still run the day-to-day program and make decisions about individual coverage.

Why do Medicaid rules differ so much between states?

The federal government sets a floor, not a ceiling. States are allowed to be more generous than federal minimums — covering more people, more services, or higher income limits. This flexibility lets states tailor programs to their own budgets and priorities, but it also creates differences. A state with more tax revenue might cover more services than a state with less.