Medicare Advantage in Buchanan County, MO, for 2027.
CMS lists 21 Medicare Advantage plans here for 2027, 3 fewer than 2026 (24). 7,012 people in the county had an individual Medicare Advantage plan in October 2026.
Sources: CMS CY2027 plan file (October 2026 release), CMS CY2026 plan file (September 2026 release), CMS enrollment by county (CPSC), October 2026, CMS 2027 Plan Crosswalk (October 1, 2026), CMS 2027 Star Ratings Data Tables (October 8, 2026). Member counts are floors because CMS hides counts of 10 or fewer.
The county in numbers
Plans that end here for 2027
6 plans with members in the county end or leave it, plus 21 with 10 or fewer members here. CMS moves 1,151 members to another plan, and 4,637 stay in the same plan.
| Plan | Insurer | Members | Why |
|---|---|---|---|
| Aetna Medicare Signature (HMO) | CVS Health | 153 | Plan terminated |
| Aetna Medicare Elite (PPO) | CVS Health | 113 | Plan terminated |
| Aetna Medicare Value Plus (HMO) | CVS Health | 71 | Plan terminated |
| UHC Medicare Advantage AM-0002 (Regional PPO) | UnitedHealth | 42 | Plan terminated |
| UHC Complete Care Support AM-1A (Regional PPO C-SNP) | UnitedHealth | 27 | Plan terminated |
| UHC Complete Care AM-1 (Regional PPO C-SNP) | UnitedHealth | 19 | Plan terminated |
Where CMS moves members
| 2026 plan | 2027 plan | Members |
|---|---|---|
| UHC Dual Complete MO-S3 (HMO-POS D-SNP) | UHC Dual Complete MO-S3 (HMO-POS D-SNP) | 906 |
| UHC Dual Complete MO-V001 (HMO-POS D-SNP) | UHC Dual Advantage MO-V1 (HMO-POS D-SNP) | 245 |
Who holds the members
- UnitedHealth6,204
- CVS Health615
- Humana154
- Blue Cross Blue Shield of Michigan Mutual Ins. Co.39
Individual Medicare Advantage members by parent company, October 2026.
Top rated plans sold here
- UHC Nursing Home Plan MO-F001 (PPO I-SNP)UnitedHealth5.0
- UHC Complete Care MO-1 (PPO C-SNP)UnitedHealth4.5
- UHC Dual Complete MO-Q2 (PPO D-SNP)UnitedHealth4.5
2027 overall Star Rating, 4.5 or more. Each plan's measure stars are in the county lookup.
See every plan, premium and copay in the free lookup.
Sort all 21 plans, open each plan's benefits and star measures, and see what each insurer paid agents in 2026.
Open Buchanan in the lookupWorking this county for AEP?
The AEP 2027 County Kit puts this county and your others in one file: the plans that end, where members land, what is still sold and a crosswalk sheet, with every number tied to its CMS file.
See the AEP 2027 County KitAll Missouri county pages. Facts from public CMS files, prepared by Health and Tech Now. Not plan advice. Check a plan's Summary of Benefits before you enroll.