Medicare is federal, but states handle some of the details
Medicare is a federal program run by the Centers for Medicare & Medicaid Services (CMS), which is part of the U.S. Department of Health and Human Services. The same rules explore to everyone in the country — you do not have different Medicare coverage because you live in California instead of Ohio. The federal government sets what Medicare covers, how much it pays doctors and hospitals, and who can sign up.
That said, states do play a role in how Medicare works on the ground. States run the Medicaid program (which is different from Medicare), and they also help Medicare beneficiaries in specific ways. Understanding which parts are federal and which are state-run matters because it changes who you contact when something goes wrong or when you need information about your coverage.
Key Takeaways
- Medicare itself is entirely federal — the same program exists in all 50 states with identical rules about coverage and payment.
- States do not run Medicare, but they do run Medicaid, which is a separate program for people with lower incomes.
- States help Medicare beneficiaries through programs like State Health Insurance information Programs (SHIPs), which offer free counseling about your Medicare choices.
- When you have a Medicare problem, you contact CMS or Medicare directly, not your state government.
- Some states have added their own programs to help seniors pay for Medicare premiums or cost-sharing, but these are extras on top of the federal program.
What the federal government controls in Medicare
CMS decides what Medicare covers — which doctors you can see, which hospitals you can use, which drugs are covered, and how much you pay out of pocket. These rules are the same whether you live in Maine or Hawaii. The federal government also sets the amount it pays hospitals for a surgery, how much a doctor gets paid for an office visit, and what your monthly premium costs.
The federal government runs the enrollment system, processes your claims, and handles appeals if Medicare denies coverage. When you call Medicare with a question about your coverage or your bill, you are talking to a federal agency. The phone number 1-800-MEDICARE connects you to CMS, not to your state.
What states do for Medicare beneficiaries
States run their own State Health Insurance information Programs (SHIPs), which are free counseling services for people on Medicare. A SHIP counselor can explain your coverage options, help you understand your bills, and answer questions about whether a drug is covered. Each state has its own SHIP with its own phone number — you find yours by calling 1-800-MEDICARE and asking, or by searching "SHIP" plus your state name online.
Some states also created their own programs to help seniors pay Medicare premiums or deductibles if they have limited income. These are not part of the federal Medicare program — they are extras that some states offer. For example, a few states have programs that pay part of your Part B premium if you meet their income limits. These vary widely by state, so what is available in one state may not exist in another.
States also work with CMS to run Medicaid, which is a separate federal-state program for people with lower incomes. If you are on both Medicare and Medicaid (called "dual may be able to access"), your state's Medicaid program handles the Medicaid part of your coverage, while Medicare handles the Medicare part.
How to know whether to contact Medicare or your state
If your question is about what Medicare covers, how much you owe, or whether a claim was paid, contact Medicare directly at 1-800-MEDICARE. This is always the right answer for federal Medicare questions.
If you need help understanding your Medicare options, want counseling about whether to switch plans, or need someone to explain a bill you received, contact your state SHIP. If you think you might be poor enough to get help paying your premiums or cost-sharing, ask your SHIP counselor whether your state has a program for that.
If you are on Medicaid as well as Medicare, contact your state Medicaid office for questions about the Medicaid part of your coverage. Your state's Medicaid office handles may be able to access, enrollment, and coverage for Medicaid.
Why this matters when you are choosing a plan
Medicare Part C (Medicare Advantage) and Part D (prescription drug coverage) are run by private insurance companies, but they must follow federal Medicare rules. An insurance company cannot offer a plan in your state unless CMS approves it. The plans available to you depend partly on where you live — some insurance companies do not sell plans in every state — but the rules those plans must follow are federal.
When you are comparing plans or have a complaint about a plan, you can contact both the insurance company and Medicare. Medicare has the authority to investigate complaints and can force a company to change how it operates. Your state SHIP can also help you understand your plan options and file a complaint if something goes wrong.
What happens if you move to a different state
Your Medicare coverage does not change if you move. You keep the same Medicare Parts A and B, and you can keep the same Part D plan if it is available in your new state. If your plan is not available where you move, you get a Special Enrollment Period that lets you switch plans without waiting for the annual open enrollment period.
Your new state's SHIP becomes your counseling resource. You can find their number by calling 1-800-MEDICARE from your new address. If you were getting help from a state program that paid your premiums, you will need to check whether your new state has a similar program and whether you still meet the income limits.
Frequently Asked Questions
Can a state change what Medicare covers?
No. Medicare coverage is set by the federal government and is the same in all states. A state cannot add or remove what Medicare covers, though some states have created their own programs to help pay for things Medicare does not cover.
What is the difference between Medicare and Medicaid?
Medicare is federal and based on age or disability, not income. Medicaid is run by states with federal money and is based on income. You can be on both at the same time. They are completely separate programs with different rules.
If I disagree with a Medicare decision, do I contact my state?
No. You contact Medicare to appeal. You can call 1-800-MEDICARE or file an appeal through your Medicare account online. Your state SHIP can help you understand the appeal process, but the decision is made by Medicare, not your state.
Does my state SHIP cost money?
No. State Health Insurance information Programs are free. A counselor will answer your questions about Medicare, help you compare plans, and explain your coverage at no charge.
What if my state does not have a program to help pay my premiums?
You can look into federal programs like the Medicare Savings Programs or Low-Income Subsidy, which are run by CMS. Your SHIP counselor can tell you whether you might be able to get help through these federal programs.