Two kinds of Arizona snowbirds
Arizona has two groups of seasonal residents: winter visitors from colder states who spend months in places like the Phoenix area, Tucson and Yuma, and Arizonans who leave for cooler places in the summer. The Medicare rules are the same for both. What matters is where your permanent residence is, because that sets which plans you can join, and how long you're away from it.
Original Medicare and Medigap travel well
Original Medicare (Parts A and B) is national. Any doctor, hospital or other provider in the U.S. that accepts Medicare can treat you, and the costs are the same in Arizona as at home. A Medigap policy pays its share wherever Original Medicare pays, so it works in both places too. Medigap premiums are based on where you live, not where you visit.
This is why many people who split the year choose Original Medicare. The trade-off is cost: Original Medicare has no yearly out-of-pocket limit, so most people add a Medigap policy and a Part D plan. See Medigap in Arizona.
Medicare Advantage is local
Medicare Advantage plans are approved for specific counties, and most use local networks. When you're outside your plan's service area:
- The plan must cover emergency care and urgently needed care anywhere in the U.S.
- Routine and follow-up care may not be covered, or may cost more, depending on the plan type. Some PPO plans pay for out-of-network care at a higher cost to you.
- If you're away more than six months in a row, federal rules (42 CFR 422.74) require the plan to disenroll you. It sends written notice first.
Some plans offer a visitor/traveler program that lets you stay enrolled for more than six months, up to 12, while you're elsewhere in the U.S., with the same cost sharing as at home. Not every plan has one, and a plan may limit it to certain areas or providers. Check the plan's Evidence of Coverage before you leave. See Medicare Advantage in Arizona.
Watch the calendar. A long summer away plus a fall trip can add up to more than six months. If a plan disenrolls you for being away too long, you're returned to Original Medicare, and you may need a Special Enrollment Period to choose new coverage.
Part D drug plans
A standalone Part D plan covers you at its network pharmacies. Before you travel, check that your plan's network includes pharmacies near your seasonal home, or set up mail order. Bring enough medication and a copy of your prescriptions, and remember the 2026 yearly cap on covered drug costs is $2,100 no matter where you fill them in the U.S.
If you move to Arizona for good
Changing your permanent address to Arizona gives you a Special Enrollment Period to join an Arizona Medicare Advantage or Part D plan. It runs from the month you move through two full months after. If you leave a Medicare Advantage plan because you moved out of its area, you also have a federal right to buy certain Medigap policies without health questions. See snowbirds and seasonal residents.
Get help
A licensed insurance agent with Benefits Life can review how your current coverage works in Arizona and compare plans from the companies they work with at (602) SENIORS (602-736-4677), TTY 711. You can also see plans in your ZIP code.
Related questions
When can I change my Medicare plan?
Yearly windows and Special Enrollment Periods.
When can I buy Medigap in Arizona?
Open enrollment and guaranteed-issue rights.
Does Medicare work in Mexico?
What happens if you need care across the border.
Sources
- eCFR — 42 CFR 422.74, Disenrollment by the MA organization (temporary absence; visitor/traveler option)
- Medicare.gov — Special Enrollment Periods (moving)
- Medicare.gov — When can I buy Medigap? (guaranteed-issue rights)
- Medicare.gov — Understanding Medicare Advantage and Medicare drug plan enrollment periods
Frequently asked questions
I spend winters in Arizona. Do I need an Arizona plan?
Not necessarily. Your plan is based on your permanent home address. If you keep Original Medicare, any Arizona provider who accepts Medicare can treat you. If you keep a Medicare Advantage plan from home, check what it covers in Arizona outside emergencies and urgent care, and how long you can be away.
What is the six-month rule for Medicare Advantage?
Under 42 CFR 422.74, a Medicare Advantage plan must disenroll you if you're out of its service area for more than six months in a row. A plan with a visitor/traveler program can let you stay enrolled for up to 12 months while you're elsewhere in the U.S.
What happens if I move to Arizona permanently?
Moving out of your plan's service area gives you a Special Enrollment Period to choose a new Medicare Advantage or Part D plan. It starts the month you move and lasts two full months after; if you tell your plan before you move, it can start the month before.
Does my Part D plan work in Arizona?
It can, if the plan's pharmacy network includes pharmacies where you spend the season, or offers mail order. Check your plan's pharmacy directory before you travel. If you move your permanent home, you may need a plan that serves your new area.
