Original Medicare (Parts A and B) is a federal program accepted by any Medicare-enrolled provider in all 50 states, Washington D.C., and U.S. territories. If you travel, split time between two states, or move, your Original Medicare coverage travels with you. The same is not always true for Medicare Advantage or Medigap plans.
How Each Plan Type Works Across States
| Plan Type | Works in All States? | Key Consideration |
|---|---|---|
Original Medicare (Parts A & B) | Yes | Accepted by any Medicare-enrolled provider nationwide |
Medicare Advantage (Part C) | Emergency care only outside service area | Routine care requires in-network providers; moving out of the plan service area triggers a Special Enrollment Period |
Medicare Part D | Yes, but network pharmacies vary | Out-of-network pharmacy costs may be higher; confirm your pharmacy is in-network in your new state |
Medigap (Medicare Supplement) | Yes, for most plans | Medigap plans follow you anywhere Original Medicare is accepted; however, Plan E, H, I, and J are no longer sold |
Snowbirds and Dual Residency
If you split time between two states, Original Medicare and most Medigap plans work seamlessly in both locations. Medicare Advantage plans are more restrictive. If you spend significant time in a second state, consider whether Original Medicare with a Medigap plan better fits your lifestyle.
State-Specific Medigap Rules
While Medigap plans are federally standardized, several states have their own additional rules:
Massachusetts, Minnesota, and Wisconsin have their own standardized Medigap plan structures that differ from the federal standard.
Several states (including California, Oregon, Idaho, Illinois, Nevada, and others) have birthday rules that allow you to switch Medigap plans annually without medical underwriting.
Some states require guaranteed issue rights beyond the federal minimums.
What Happens If You Move to a New State?
If you move out of your Medicare Advantage plan's service area, you qualify for a Special Enrollment Period to switch plans. If you have Original Medicare and a Medigap plan, your coverage continues uninterrupted in your new state, though you may want to compare plans available there. If you have a Part D plan, you should verify your current plan covers your new area or switch during your SEP.
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