Medicare Advantage

Aetna Medicare Advantage in Missouri for 2027: 42 Plans, County by County

JEFFERSON CITY, Mo. — Aetna, which CMS lists as Aetna (CVS Health), will offer 42 Medicare Advantage plans across Missouri for the 2027 plan year, according to the CMS Medicare Advantage Landscape Source Files. Those plans are spread across HMO, HMO-POS, and PPO designs, and they include coverage built for people with specific needs, like dual eligibility for Medicare and Medicaid. Because each plan is offered county by county, a plan that appears on the statewide list may or may not be available where you live. This site is independent — not the government, not Medicare, and not Aetna — and this story is here to help you read the 2027 landscape before the Annual Enrollment Period closes on December 7, 2026.

2027 plan lineupMissouri

What is Aetna offering across Missouri for 2027?

Aetna is offering 42 Medicare Advantage plans statewide in Missouri for 2027. By plan type, that breaks down to 18 HMO plans, 12 HMO-POS plans, and 12 PPO plans. Of the 42, 39 include Part D prescription drug coverage, and 3 do not.

Aetna's 2027 lineup also includes 16 Special Needs Plans: 12 Dual-Eligible Special Needs Plans (D-SNPs) for people who have both Medicare and Medicaid, 3 Chronic Condition Special Needs Plans (C-SNPs) for people with certain qualifying conditions, and 1 Institutional Special Needs Plan (I-SNP). Special Needs Plans have enrollment rules of their own, and eligibility depends on your situation.

For context, Missouri has 11 other Medicare Advantage carriers in 2027, bringing the statewide total to 174 plans across all carriers. Aetna is one of those 12 total carriers.

Which Aetna plans reach the most Missouri counties in 2027?

The Aetna 2027 plans with the widest county footprints in Missouri include Aetna Medicare Eagle (HMO-POS), offered in 60 counties; Aetna Medicare Value Plus (HMO-POS), in 58 counties; Aetna Medicare Enhanced (PPO) and Aetna Medicare Enhanced Classic (PPO), each in 52 counties; Aetna Medicare Longevity (HMO I-SNP), in 51 counties; and several plans — including Aetna Medicare Elite (PPO), Aetna Medicare Elite Classic (PPO), Aetna Medicare Elite Classic Extra (PPO), Aetna Medicare Dual (HMO D-SNP), Aetna Medicare Full Dual (HMO D-SNP), and Aetna Medicare Full Dual Extra (HMO D-SNP) — in 50 counties.

The full plan-by-plan breakdown, including the smaller-footprint plans like Aetna Medicare Chronic Care (HMO C-SNP) and Aetna Medicare Signature (HMO-POS and PPO) variants, is rendered as a table on this page. A plan listed statewide may still not be offered in your specific county, which is why the Medicare Plan Finder lookup matters more than any statewide count.

What is new or not returning from Aetna in Missouri for 2027?

Aetna has 13 plans new for 2027 in Missouri and 5 plans that are not returning. The new plans include Aetna Medicare Elite (PPO), Aetna Medicare Enhanced (PPO), Aetna Medicare Enhanced (HMO-POS), Aetna Medicare Signature (PPO), Aetna Medicare Longevity (HMO I-SNP), Aetna Medicare Full Dual Extra (HMO D-SNP), Aetna Medicare Full Dual Extra Care (HMO D-SNP), and a new Aetna Medicare Chronic Care (HMO C-SNP) offering.

Several plans have also been renamed. Aetna Medicare Elite Classic (PPO) was previously Aetna Medicare Elite (PPO); Aetna Medicare Elite Classic Extra (PPO) was previously Aetna Medicare Signature (PPO); Aetna Medicare Enhanced Classic (PPO) was previously Aetna Medicare Enhanced (PPO); and Aetna Medicare Signature Classic (PPO) was previously Aetna Medicare Signature (PPO). A renamed plan is treated by CMS as a continuing plan, but the paperwork you receive this fall may look different from last year. If you got a non-renewal notice, it means your specific 2026 plan is not being offered in 2027 and you will need to compare options during the Annual Enrollment Period.

How do I check whether an Aetna plan is offered in my Missouri county and covers my doctors and drugs?

To check whether a specific Aetna plan is offered in your Missouri county for 2027, use the Medicare Plan Finder at medicare.gov or call 1-800-MEDICARE (TTY 1-877-486-2048), available 24 hours a day, seven days a week. Enter your ZIP code and county to see the plans actually available at your address.

For doctors and hospitals, check the plan's provider directory or call the clinic directly and ask whether they will be in network for the exact 2027 Aetna plan you are considering. For prescriptions, look up the plan's formulary (drug list) and run each of your medications, including the dose. These details live in the plan's Evidence of Coverage and official directories, not in any statewide summary.

What should Missouri residents do before December 7, 2026?

Before December 7, 2026, read the Annual Notice of Change (ANOC) your current plan mailed you in September 2026, because it spells out what is changing for January 1, 2027. If your plan is one of the 5 Aetna plans not returning, or if it has been renamed, that notice will say so.

From there, build a short list on medicare.gov: the plans available in your county, whether each covers your prescriptions, and whether your doctors participate. The Annual Enrollment Period runs October 15 through December 7, 2026, and any change you make takes effect January 1, 2027. There is no advantage to deciding on the first day over the last — the effective date is the same.

Where can Missouri residents get free help comparing 2027 plans?

Free, official help is available at medicare.gov and by phone at 1-800-MEDICARE (TTY 1-877-486-2048), 24 hours a day, seven days a week. The Medicare Plan Finder is the authoritative tool for comparing 2027 plans by ZIP code, and the phone line can walk you through the same comparison if you prefer talking to someone.

If you want to confirm details directly with Aetna, use the contact information on the plan's own materials. For questions about Medicare eligibility and enrollment timelines tied to your birthday or work history, the Social Security Administration handles that side.