Compare Medicare Supplement plans in Arizona. Compare Plan G, Plan N, and Plan A with estimated premiums.
Arizona follows standard Medigap rules with attained-age rating — premiums typically increase as you age. Buy during your 6-month open enrollment period (when you turn 65 with Part B) for guaranteed acceptance. After that window, medical underwriting may apply. Free Medigap counseling is available through Arizona SHIP at 1-800-432-4040.
Medigap (Medicare Supplement Insurance) fills the gaps in Original Medicare coverage — the 20% coinsurance, hospital deductibles, and other out-of-pocket costs that can add up quickly. In Arizona, Medigap plans are standardized by the federal government — Plan G from any insurer provides the same coverage — but premiums vary significantly between insurers.
In Arizona, Medigap premiums typically use attained-age rating, increasing as you age. A Plan G policy purchased at 65 for $150/month may cost $250–$350/month by age 75 as the age-based rate increase is applied each year. Shopping for the lowest premium at age 65 is important, as is understanding how aggressively each insurer raises rates over time.
Plan G is the most popular Medigap option for new Medicare beneficiaries — it covers virtually everything except the Part B deductible ($257/year in 2026), providing near-complete protection from unexpected Medicare costs. Plan N offers a lower premium with the trade-off of office visit copays (up to $20) and ER copays ($50). For Arizona seniors with significant or unpredictable healthcare needs, the premium certainty of Medigap can be worth the higher monthly cost compared to Medicare Advantage.
Susan is 65 and enrolling in Medicare in Arizona. She sees her primary care doctor about 8 times per year and takes 2 maintenance prescriptions. She is comparing Plan G and Plan N.
For a healthy 65-year-old in Arizona, Plan N typically saves $250–$400/year over Plan G. However, if Susan develops a condition requiring frequent specialist visits, Plan N copays can narrow or eliminate this advantage. Plan G offers complete cost predictability after the $257 Part B deductible — ideal for those who prefer simplicity or expect heavier healthcare use. Contact Arizona SHIP at 1-800-432-4040 for help comparing specific Arizona insurer quotes.
Open Enrollment Is Your Best Window
Your 6-month Medigap Open Enrollment Period — starting the month you turn 65 with Part B — is your guaranteed-issue window in Arizona. During this period insurers cannot deny coverage or charge higher premiums based on health status. After this window, Arizona insurers can use medical underwriting in most circumstances. Missing this window can permanently limit your Medigap options — apply at 65 regardless of current health.
Premium Rate Trends in Arizona
Most Arizona Medigap insurers use attained-age rating — premiums increase each year as you age. A Plan G policy at $150/month at age 65 may cost $250–$350/month by age 75. When comparing plans, ask about historical rate increase percentages — some Arizona insurers are more aggressive than others.
Medigap vs Medicare Advantage in Arizona
Medigap provides nationwide coverage with any Medicare-accepting provider and no prior authorization — ideal for frequent travelers, those with existing specialist relationships, or anyone who wants predictable costs. Medicare Advantage in Arizona averages $12/month with potential extra benefits like dental and vision, but uses networks and may require referrals. Our comparison calculator above can help quantify which option fits your financial and healthcare situation in Arizona.
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In Arizona, the standardized Medigap plans available include Plans A, B, D, G, K, L, M, and N (plus C and F for those eligible before January 1, 2020). Plan G is the most popular for new Medicare beneficiaries, offering comprehensive coverage except for the Part B deductible ($257 in 2026). Plan N offers similar coverage with lower premiums but has copays of up to $20 for office visits and $50 for ER visits. In Arizona, most insurers use attained-age rating, meaning premiums increase as you age.
Medigap premiums in Arizona vary by plan, insurer, age, gender, and tobacco use. Premiums in Arizona typically start around $100–$175/month for Plan G at age 65 and increase with age. At age 65, Plan G premiums typically range from $100–$300/month and Plan N from $80–$200/month, varying by insurer. Get multiple quotes — premiums for the same standardized plan can vary significantly between insurers. Arizona SHIP (1-800-432-4040) can help you compare specific quotes.
Your Medigap Open Enrollment Period is the 6 months starting the first day of the month you turn 65 AND have Part B coverage. During this window, you have guaranteed issue rights — insurers in Arizona cannot deny coverage or charge more due to pre-existing conditions. After this window closes, Arizona insurers can use medical underwriting in most situations, potentially denying coverage or charging higher premiums based on health status. If you miss your open enrollment window, buy as soon as possible — the longer you wait, the harder it may be to qualify.
You can attempt to switch Medigap plans at any time in Arizona, but outside of your initial open enrollment period or a qualifying special enrollment period, the new insurer can use medical underwriting to deny your application or charge higher premiums based on health status. In Arizona, switching is easiest if you are in good health. If your health has declined since you bought your original Medigap policy, switching may be difficult or impossible without paying significantly higher premiums. Contact Arizona SHIP at 1-800-432-4040 before attempting to switch plans.
The choice between Medigap and Medicare Advantage depends on your individual situation. Medigap provides more predictable costs, lets you see any Medicare-accepting provider nationwide, and has no prior authorization requirements — ideal for frequent travelers, those with complex health needs, or those who want to keep specific specialists. Medicare Advantage typically has lower premiums (averaging $12/month in Arizona) and may include extra dental, vision, and hearing benefits, but has network restrictions and prior authorization. Our comparison calculator above can help you evaluate which option fits your needs.
Medicare Disclaimer
These calculators provide estimates based on 2026 Medicare data for educational purposes only. Actual Medigap premiums vary by insurer, age, and state. Contact Medicare at 1-800-MEDICARE or medicare.gov for official information. Consult a licensed Medicare advisor for personalized Medigap plan comparison. Not affiliated with Medicare or the US government.