These pages answer one question each, in plain language, with the Arizona details that matter: AHCCCS, the border with Mexico, seasonal residents, Tribal Nations and the Indian Health Service, and Arizona's Medigap rules. Each one starts with the short answer and links to the sources.
Coverage and costs
Does Medicare work in Mexico?
Generally no; Medicare covers care in Mexico only in a few rare cases, though some Medigap plans cover emergencies abroad.
Does Medicare cover dental?
Original Medicare covers dental care only in limited medical situations, such as before a heart valve replacement or during cancer treatment.
Does AHCCCS pay Medicare premiums?
Yes, if your income qualifies for one of AHCCCS's Medicare Savings Programs: QMB Only, SLMB or QI-1.
Can I use IHS and Medicare?
Yes. You can keep using IHS, tribal and urban Indian clinics, and Medicare generally pays first.
Enrollment and changes
When can I change my Medicare plan?
Mainly October 15 to December 7, January 1 to March 31 if you're in Medicare Advantage, or when a life event gives you a Special Enrollment Period.
When can I buy Medigap in Arizona?
Best in your six-month Medigap open enrollment period after you turn 65 and have Part B; later, only with a federal guaranteed-issue right or by passing health questions.
Do I need Part B if I'm still working?
Not if you have group coverage from current work at an employer with 20 or more employees; you can sign up later without a penalty.
Can snowbirds keep their Medicare plan?
Original Medicare works anywhere in the U.S.; a Medicare Advantage plan's network is local, and a plan can drop you after six months away.
Main topics
- Medicare basics and eligibility
- Enrollment periods and working past 65
- Medicare costs in 2026 and calculators
- Medigap, Medicare Advantage and Part D in Arizona
- AHCCCS and Medicare and Medicare Savings Programs
- Snowbirds and seasonal residents and Tribal Nations and IHS
- Plans ending in 2027 and Arizona Medicare contacts
- Medicare glossary
Still have a question?
Official contacts for Medicare, Social Security, AHCCCS and DIFI are on our Arizona Medicare contacts page.
For help comparing plans from the companies they work with, you can talk with a licensed insurance agent with Benefits Life at (602) SENIORS (602-736-4677), TTY 711, or see plans in your ZIP code.
Sources
- Medicare.gov — Get started with Medicare
- AHCCCS — Medicare Savings Programs
- Indian Health Service — Phoenix Area
Frequently asked questions
Where do these answers come from?
Each answer is based on Medicare.gov, CMS rules, AHCCCS, the Indian Health Service and Arizona law, and lists its sources at the bottom of the page. Medicare's rules are federal, so most answers apply nationwide; each page explains where Arizona's programs or geography change the picture.
Who can answer a question about my own situation?
1-800-MEDICARE (1-800-633-4227) and Medicare.gov answer questions about Medicare itself, Social Security handles sign-up and Part B premiums, and AHCCCS handles Medicaid and the Medicare Savings Programs. For help comparing plans, you can call a licensed insurance agent with Benefits Life, at no cost to you.
Are 2027 amounts on these pages?
Dollar amounts on this site are 2026 figures from CMS and are labeled with the year. Medicare publishes the next year's premiums and deductibles each fall; check Medicare.gov for the newest amounts.
