Medicare Advantage

Have Diabetes or Heart Failure? A Mesa C-SNP Guide

People in Mesa can choose from 92 Medicare Advantage plans for 2027, against 88 this year. 13 of this year’s plans are gone, 17 are new to Maricopa County, and 33 that continue have changed their premium, deductible, plan type or name, 13 of them under a new name.

MESA, Ariz. — As the Annual Enrollment Period opens for 2027 Medicare coverage, people in Mesa who live with a long-term health condition like diabetes, heart failure or chronic kidney disease have a specific type of Medicare Advantage plan built with them in mind: the Chronic Condition Special Needs Plan, or C-SNP. For plan year 2027, Maricopa County — the county Mesa is in — has 25 C-SNPs on the Medicare landscape, out of 92 Medicare Advantage plans total, according to the CMS Medicare Advantage Landscape Source File.

The enrollment window runs October 15 through December 7, 2026, and any change you make takes effect January 1, 2027. But C-SNPs come with their own enrollment rule worth knowing early: you need a qualifying diagnosis your doctor can confirm, and once you have one, you may be able to join outside the regular fall window.

What a C-SNP actually is

A Chronic Condition Special Needs Plan is a type of Medicare Advantage plan (Part C) that is only open to people living with a specific, serious long-term illness. Medicare has a defined list of qualifying conditions — examples include diabetes, chronic heart failure, cardiovascular disorders, chronic lung disorders and end-stage renal disease — and each C-SNP picks one condition or a related group to serve.

Because the membership is narrower, the plan can shape its benefits around that condition: the drug formulary, the care-coordination services, and the specialist network are built for people managing that illness. All C-SNPs include Part D prescription drug coverage.

That focus is also the catch. If your diagnosis changes, or you no longer meet the condition requirement, the plan can disenroll you after a grace period. It is a plan designed for a specific health situation, not a general-purpose option.

How enrollment works — the diagnosis step

To join a C-SNP, you need two things: Medicare Parts A and B, and a qualifying chronic condition that your provider confirms in writing. The plan will ask your doctor to verify the diagnosis, usually with a short form. If the provider does not return the verification within the plan's timeframe, enrollment can be cancelled.

This is different from most Medicare Advantage plans, where enrollment is based only on where you live and your Medicare status. For a C-SNP, the clinical paperwork is part of the sign-up.

The Special Enrollment Period for chronic conditions

Most people can only change Medicare Advantage plans during the Annual Enrollment Period (October 15 – December 7) or the Medicare Advantage Open Enrollment Period (January 1 – March 31). People who qualify for a C-SNP have an additional path: a Special Enrollment Period tied to the qualifying condition.

In plain terms, if you are newly diagnosed with a condition a local C-SNP covers, you generally do not have to wait until fall to switch into that plan. You can use the SEP to enroll once, and coverage begins the first of the following month. If you later lose eligibility — for example, the plan can't re-verify the condition — you also get a one-time SEP to move to another plan.

The C-SNP lineup in Maricopa County for 2027

The table on this page lists every C-SNP available in Maricopa County for 2027, with the carrier and plan type. In alphabetical order, the carriers offering C-SNPs next year are Aetna (CVS Health), Alignment Health Plan, Centene (WellCare), Devoted Health, Elevance Health (Anthem), Gold Kidney Health Plan, HealthSpring, Humana, SCAN Health Plan, UnitedHealthcare and Verda Health Plan of Arizona.

A few things to know when you look through the list:

• Some plan names state the condition they serve — for example, Wellpoint Lung Care, Gold Dialysis & Kidney, and Humana Gold Plus - Diabetes and Heart. Others do not. The plan's Summary of Benefits spells out exactly which condition qualifies.
• Several C-SNPs are new for 2027, including Aetna Medicare Chronic Care, DEVOTED C-SNP ENHANCED 092 AZ, DEVOTED C-SNP GIVEBACK EXTRAS 104 AZ, DEVOTED C-SNP PLUS 093 AZ, Gold Dialysis Premier, SCAN DaVita Dialysis Care Complete and SCAN Walmart Medicare Complete.
• A handful were renamed from 2026, which means the plan may look familiar under a new label. The Annual Notice of Change your current plan mails each fall explains any renaming or benefit changes.

Costs, drug coverage, provider networks and extra benefits are different in every plan, and we cannot compare them here. The Medicare Plan Finder at medicare.gov lets you filter for Special Needs Plans in ZIP code 85201, 85202 and so on, and see each plan's details side by side.

What to do this fall if you think a C-SNP may fit

If you were diagnosed with a qualifying chronic condition this year, ask your doctor's office whether they would complete a C-SNP verification form. Then compare any plan you are considering against your current coverage: your prescriptions, your specialists, the hospitals you use, and your total out-of-pocket exposure.

Two 2027 program-level numbers to keep in mind as you compare drug coverage: the Part D out-of-pocket cap rises to $2,400 (up from $2,100 in 2026), and the Part D maximum deductible rises to $700 (from $615 in 2026). The 2027 Part B premium and the IRMAA income brackets have not yet been published; CMS typically releases those figures later in the fall.

If you do nothing during the window, your current plan simply renews for 2027 if it is still offered, with any changes described in its Annual Notice of Change.