Medicare coverage is not the same in all states. The federal backbone of the program — Part A and Part B, known together as Original Medicare — works identically whether you live in Maine or Montana. But the private pieces most beneficiaries add on top, including Medicare Advantage plans, Part D drug coverage, and Medigap policies, can look dramatically different depending on your ZIP code. State-run assistance programs add another layer of variation.
What Works the Same Everywhere
Original Medicare is defined by federal law, so its rules don’t change at a state border. Part A covers inpatient hospital care, skilled nursing facility stays, hospice, and some home health services. Part B covers doctor visits, outpatient procedures, medical equipment, and preventive care.1Medicare.gov. Parts of Medicare Everyone pays the same Part A and Part B deductibles and the same standard Part B premium.2Centers for Medicare & Medicaid Services. 2026 Medicare Parts A and B Premiums and Deductibles Higher-income beneficiaries pay more for Part B through income-related surcharges, but those are set federally too.
Original Medicare also gives you geographic freedom. You can see any doctor or visit any hospital that accepts Medicare, anywhere in the United States, including Puerto Rico, the U.S. Virgin Islands, and other territories.3Medicare.gov. Compare Original Medicare and Medicare Advantage No networks, no referrals, no state-specific paperwork. Winters in Florida and summers in Michigan are covered the same way.
Medicare Advantage: Where Location Matters Most
Medicare Advantage (Part C) is where geographic variation really kicks in. These plans are sold by private insurance companies approved by Medicare and must cover everything Original Medicare covers.4U.S. Department of Health and Human Services. What is Medicare Part C? Beyond that minimum, each plan sets its own premiums, deductibles, copays, provider networks, and extras such as dental, vision, and hearing coverage. About half of all Medicare beneficiaries are now enrolled in Medicare Advantage.
The plans available to you depend on where you live. A county with heavy insurer competition might offer 40 or more Medicare Advantage options with low premiums and generous extras. A rural county might have only a handful of choices, or none. Two people living 30 miles apart can face completely different plan selections, costs, and provider networks because they’re in different counties.
Network restrictions compound the variation. Most Medicare Advantage plans run as HMOs or PPOs, and the size and quality of those networks depend on the local healthcare market. Urban areas with many hospitals and physician groups tend to have broader networks; rural areas may have limited choices. This is the sharpest practical difference between Medicare in different parts of the country.
Part D Drug Coverage Varies by Region
Medicare Part D prescription drug plans are also sold by private insurers approved by Medicare, either as standalone plans or bundled into a Medicare Advantage plan.5Medicare.gov. What’s Medicare Drug Coverage (Part D)? The specific plans available vary by region, and two beneficiaries in different states may face entirely different options for which drugs are covered, which tier those drugs fall into, and which pharmacies are in network.
Some protections apply everywhere. No Part D plan in 2026 can charge a deductible higher than $615.6Medicare.gov. How Much Does Medicare Drug Coverage Cost? And beginning in 2025, the Inflation Reduction Act capped annual out-of-pocket spending on Part D drugs at $2,000, eliminating the old “donut hole.” That cap adjusts for inflation but applies to every Part D plan nationwide.7Congress.gov. Selected Health Provisions of the Inflation Reduction Act
Where the variation bites hardest is in formularies. A drug your current plan covers at a low copay might sit on a higher-cost tier, or not be covered at all, under a plan in another state. If you take expensive or specialty medications, the plan options in your area matter enormously.
Medigap: Standardized Benefits, Very Different Prices
Medigap (Medicare Supplement Insurance) fills the gaps in Original Medicare by covering costs like deductibles, copays, and coinsurance. In most states, there are 10 standardized plan types identified by letters: A, B, C, D, F, G, K, L, M, and N.8Medicare.gov. Get Medigap Basics A Plan G from one insurer covers the exact same benefits as a Plan G from any other insurer. The difference is price.
Those price differences can be large. Monthly premiums for a 65-year-old buying the popular Plan G can range from under $100 in some areas to over $600 in others. Insurers also use different pricing methods. Some base premiums on your age at purchase, so the rate stays relatively low over time; others adjust premiums based on your current age, so costs climb steadily. The same plan letter from the same insurer can cost different amounts in different ZIP codes.
Three states handle Medigap differently from everyone else. Massachusetts, Minnesota, and Wisconsin don’t use the standard lettered plans. They have their own state-specific standardized options with different benefit structures.8Medicare.gov. Get Medigap Basics If you move to or from one of these states, you’ll navigate an entirely different set of plan choices.
A few states also give stronger consumer protections than the federal baseline. Connecticut, Massachusetts, and New York, for example, let residents buy Medigap policies at any time regardless of health status. Most states only guarantee that right during a six-month window after you first enroll in Part B at age 65 or older.
State Assistance Programs Shift the Math
Your state can also affect how much you actually pay. Medicare Savings Programs help low-income beneficiaries cover Part B premiums and, in some cases, deductibles and copays. These programs are administered at the state level with joint federal and state funding.9Medicare.gov. Medicare Savings Programs The federal government sets baseline income limits, but many states use higher thresholds or exclude certain income and assets.10Medicaid and CHIP Payment and Access Commission. Medicare Savings Programs
The practical result: two beneficiaries with identical incomes might qualify for help in one state but not in another. Some states have eliminated asset tests entirely; others still require applicants to have limited savings. If you’re close to the income cutoff, check your state’s specific rules rather than assuming the federal limits apply to you.
Dual eligibility for both Medicare and Medicaid adds another layer. Medicaid benefits vary substantially by state, covering services like long-term care, dental, and transportation that Medicare doesn’t. In some states, Medicaid also limits what providers can charge dually eligible beneficiaries for Medicare cost-sharing, reducing out-of-pocket costs further than the federal rules alone.10Medicaid and CHIP Payment and Access Commission. Medicare Savings Programs
What Happens If You Move to Another State
If you’re on Original Medicare, a move across state lines changes almost nothing. You keep the same Part A and Part B benefits, pay the same costs, and can continue seeing any Medicare-accepting provider in your new state.
Medicare Advantage and Part D plans work differently. They have defined service areas, and if you move outside yours, you’ll likely need to switch plans. A move triggers a Special Enrollment Period giving you two full months after relocation to join a new Medicare Advantage or Part D plan. If you notify your current plan before the move, the window opens a month earlier.11Medicare.gov. Special Enrollment Periods You can also drop Medicare Advantage entirely and return to Original Medicare during this period.
Medigap policies are trickier. You can usually keep your existing Medigap plan when you move, since these policies work anywhere Original Medicare is accepted. But your premium might change based on your new location, depending on how your insurer prices policies. The real concern is wanting to switch to a different Medigap plan after moving. In most states, insurers aren’t required to sell you a new policy outside the initial enrollment window and can reject you or charge more based on health conditions. One important exception: if you’re leaving a Medicare Advantage plan because you moved out of its service area, federal law gives you a guaranteed right to buy certain Medigap policies without medical underwriting for up to 63 days.11Medicare.gov. Special Enrollment Periods That window is short and worth knowing about before you move, not after.