Medicare Advantage

Aetna Medicare Advantage in Michigan for 2027: 13 Plans, County by County

LANSING, Mich. — Aetna, which CMS groups under Aetna (CVS Health), will offer 13 Medicare Advantage plans across Michigan for the 2027 plan year, according to the CMS Medicare Advantage Landscape Source Files. Those plans are spread county by county, so the roster a Michigan resident actually sees on Medicare.gov depends on where they live. This site is independent — it is not Aetna, not an insurance company, and not part of the federal government — and this article is for education, not a recommendation.

2027 plan lineupMichigan

What Aetna offers in Michigan for 2027

Across Michigan, Aetna's 2027 Medicare Advantage lineup totals 13 plans. By plan type, that breaks down to 3 HMO plans, 2 HMO-POS plans, and 8 PPO plans. All 13 include Part D prescription drug coverage.

Three of those 13 plans are Special Needs Plans: 2 Dual Eligible Special Needs Plans (D-SNPs), designed for people who qualify for both Medicare and Medicaid, and 1 Chronic Condition Special Needs Plan (C-SNP), built for people with a qualifying chronic condition. Aetna does not list an Institutional SNP (I-SNP) in Michigan for 2027.

For context, 17 other carriers also sell Medicare Advantage plans somewhere in Michigan for 2027, and all carriers combined offer 181 plans statewide. The table on this page shows Aetna's full 2027 slate; the counts above come from the CMS MA Landscape Source File for CY2027.

Aetna's plans with the widest county reach

Michigan has 83 counties, and county reach varies plan by plan. Based on the CMS data, Aetna's broadest-reach plan in Michigan for 2027 is Aetna Medicare Eagle (PPO), listed in 48 counties. Next in county footprint is Aetna Medicare Dual Care (HMO D-SNP), listed in 29 counties — this is the plan CMS flagged as renamed from Aetna Medicare Full Dual Care (HMO D-SNP).

After those two, Aetna's county footprints step down through its Signature family (sold as both HMO-POS and PPO versions), Aetna Medicare Signature Extra (PPO), Aetna Medicare Enhanced (PPO), Aetna Medicare Value Care (PPO), Aetna Medicare Chronic Care (HMO C-SNP), and Aetna Medicare HIDE (HMO D-SNP). You can see each plan's exact county count in the table above.

Two quick notes on reading the list. First, some plan names repeat because Aetna files separate contract/plan IDs that share a marketing name but cover different counties — that is why "Aetna Medicare Signature (PPO)" appears more than once with different reach numbers. Second, a wider county footprint is not a quality signal; it just means the plan is filed in more places.

What is new or not returning

For 2027, Aetna has 0 brand-new Medicare Advantage plans in Michigan, and 2 of its 2026 plans are not returning for 2027, per the year-over-year comparison in the CMS MA Landscape Source Files. One current plan has been renamed: Aetna Medicare Full Dual Care (HMO D-SNP) is listed for 2027 as Aetna Medicare Dual Care (HMO D-SNP).

If you are currently enrolled in a plan that is not continuing, your plan should send you a written notice explaining your options. It is still worth checking your mail carefully this fall and comparing what is available in your county during the Annual Enrollment Period.

Checking whether a plan is offered in your county — and covers your doctors and drugs

The statewide count of 13 plans is the ceiling, not the menu for any one address. Medicare Advantage plans in Michigan are approved county by county, so a plan that appears on Aetna's statewide list may or may not be offered where you live.

Here is a straightforward way to check:

1. Go to Medicare.gov and open the Plan Finder. 2. Enter your ZIP code (and county, if asked). 3. Add your prescription drugs exactly as you take them, including dose and quantity. 4. Filter for Medicare Advantage plans and look for the specific Aetna plan name you want. 5. Open the plan details and review the provider directory and drug formulary for that plan.

For the most authoritative answer on networks and covered drugs, read the plan's own Evidence of Coverage and provider/pharmacy directories, or call Aetna using the member or prospective-member number listed on Medicare.gov. If your doctor, hospital, or a specific medication matters to you, confirm each one against the exact plan you are considering — networks and formularies differ from plan to plan, even within the same carrier.

What to do before December 7

The Annual Enrollment Period runs October 15 – December 7, 2026. Anything you enroll in, switch to, or drop during that window takes effect January 1, 2027.

A reasonable checklist:

• Read the Annual Notice of Change (ANOC) your current plan mails in the fall.
• List your doctors, hospitals, pharmacies, and prescriptions before you shop.
• Use Medicare.gov's Plan Finder to compare plans available in your county.
• Write down any plan ID you are seriously considering, so you can call and confirm details.
• Make your decision on or before December 7, 2026.

There is no advantage to waiting until the last day; there is also no penalty for taking the full window to compare.

Where to get free help

Two no-cost, non-sales resources can answer questions and walk you through enrollment:

• Medicare.gov — the official site for the Plan Finder, plan documents, and enrollment.
• 1-800-MEDICARE (1-800-633-4227) — available 24 hours a day, 7 days a week, including TTY service at 1-877-486-2048.