Medicare in Arizona offers several options for health coverage in 2026. You can choose Original Medicare (Part A and Part B) and then add supplemental insurance called Medigap to help pay costs that Original Medicare does not cover.
Supplemental insurance can help cover copayments, coinsurance, and deductibles that might otherwise come out of your own pocket.
Understanding the basic parts of Medicare and the supplemental plans available in Arizona can help you make confident decisions about your healthcare coverage for 2026.
What Is Medicare Supplemental Insurance (Medigap)?
Medicare Supplemental Insurance, often called Medigap, is optional coverage you buy from a private insurance company to help with costs that your Original Medicare (Part A and Part B) does not fully cover.
Calculate Your 2026 COLA Increase →This can include copays, coinsurance, and deductibles. Medigap policies work with Original Medicare but cannot be used with Medicare Advantage (Part C) plans.
Medigap plans are standardized, which means each type of plan must offer the same basic benefits regardless of the insurance company selling it.
For example, Plan G will cover the same services no matter which insurer you choose, though premiums can differ by carrier.
What Medigap Plans Are Available in Arizona in 2026?
Arizona residents can choose from several types of Medigap plans. Each plan is identified by a letter (such as A, B, D, G, K, L, M, and N). Most plans help pay original Medicare’s cost sharing in different ways.
Plans like Plan G and Plan N are popular because they offer broader coverage with predictable costs, while others like Plan K and Plan L offer lower premiums but more cost sharing.
Not all Medigap plans include the same benefits. For new Medicare enrollees after January 1, 2020, Medigap Plans C and F are not available, so options like Plan G have become more common.
How Do Medigap Plans Work With Original Medicare?
To buy a Medicare Supplement plan in Arizona, you must already be enrolled in Original Medicare Part A and Part B. Once you have those, you can choose a Medigap plan to fill gaps in coverage. For example:
- Original Medicare pays its share first.
- Your Medigap plan helps pay some or all of the remaining costs.
- Medigap plans do not include prescription drug coverage, so you may need to enroll in a separate Part D plan if you want drug coverage.
There is no out‑of‑pocket maximum with Original Medicare alone, so Medigap plans can be valuable if you expect frequent medical care.
When Can You Enroll in a Medigap Plan in Arizona?
Your Medigap Open Enrollment Period begins the first month you are both age 65 or older and enrolled in Medicare Part B.
This six‑month window is the best time to buy a Medigap policy because insurers cannot deny you coverage or charge higher premiums due to health conditions.
If you miss this window, insurance companies can use medical underwriting. Underwriting means they may consider your health history and could charge higher premiums or deny coverage.
There may be exceptions with guaranteed issue rights depending on your situation, but these are rare.
How Much Do Medigap Plans Cost in Arizona?
Premiums for Medigap plans in Arizona vary widely based on the plan you choose, your age, and the company selling it.
Plans like Plan G generally have higher premiums but offer more comprehensive coverage after the deductible, while plans like Plan N may have lower premiums with some copayments. Costs also depend on whether you choose a high‑deductible version of a plan.
It is important to compare premiums from multiple insurance companies when choosing a plan because companies set their own prices even though benefits are standardized. Tools on Medicare.gov’s Medigap plans page allow you to compare benefits and pricing in Arizona.
Should You Choose Medigap or Medicare Advantage Instead?
Arizona residents living under Original Medicare can choose between buying Medigap insurance or signing up for a Medicare Advantage (Part C) plan. Medicare Advantage plans replace Original Medicare and often include extra benefits such as prescription drug, dental, and vision coverage.
All Medicare Advantage plans must provide at least the same coverage as Original Medicare, but they usually use provider networks.
In contrast, Medigap works with Original Medicare and offers broader access to doctors that accept Medicare, with fewer network restrictions. You should compare your expected healthcare needs, preferred providers, and total costs before deciding.
What Should You Consider Beyond Premiums?
When comparing Medigap plans, don’t focus only on the monthly premium. Other factors include:
- The scope of coverage the plan offers.
- Whether there is a high‑deductible option that lowers your monthly cost.
- How the plan handles excess charges and copays.
- Your own health history and expected use of healthcare services.
Using the official Medicare.gov Medigap comparison tools helps you see how different plans stack up in cost and benefits for your location.
How Can Arizona Residents Get Help Choosing a Plan?
If you need personalized support, Arizona residents can contact the State Health Insurance Assistance Program (SHIP) for free counseling on Medigap and Medicare coverage options.
You can also reach out to licensed insurance agents who specialize in Medicare to get quotes and plan details tailored to your needs.
