Arizona Medicare 2026

Arizona is one of the top five states for Medicare Advantage enrollment by percentage, with roughly 58% of beneficiaries choosing an MA plan. The Phoenix–Scottsdale–Mesa metro area is one of the most competitive MA markets in the country, with UnitedHealthcare, Humana, and Aetna all fielding multiple plan types — HMO, PPO, and DSNP — competing for the large retiree population that relocates from the Midwest, Northeast, and Pacific Coast. Banner Health and Dignity Health (now CommonSpirit) are the dominant hospital systems and participate across most major MA networks. Tucson's market is similarly competitive, with strong representation from Molina and Blue Cross Blue Shield of Arizona in the DSNP and low-income segment.

Arizona's warm climate and lower cost of living relative to California make it a perennial top retirement destination, driving an annual influx of new Medicare beneficiaries who enrolled in Medigap in their home state and now need to understand Arizona's market dynamics. Medigap Plan G runs about $135/month — moderate relative to the national range — and is widely available. Beneficiaries arriving from California should note that the Birthday Rule does not apply in Arizona; they lose that annual switching right upon moving here. The 6-month open enrollment window at 65 is the key protection, and snowbirds spending winters in Arizona should ensure their coverage works in both states.