Medicare Advantage in Montgomery County, Missouri
1,723 people in Montgomery County, Missouri were enrolled in Medicare Advantage in October 2026, 53.6% of 3,215 eligible beneficiaries (+1.7 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 58% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 3,884 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 644 members here are in plans that terminate or leave the county. MA plans offered go from 30 to 27.
Parent organizations in Montgomery County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 987 | −9 | 58.2% |
| Humana Inc. | 292 | +168 | 17.2% |
| CVS Health Corporation | 218 | +35 | 12.9% |
| Lumeris Group Holdings Corporation | 80 | +31 | 4.7% |
| Centene Corporation | 43 | +19 | 2.5% |
| Elevance Health, Inc. | 34 | −152 | 2.0% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 24 | +5 | 1.4% |
| Devoted Health, Inc. | 18 | new | 1.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 657 beneficiaries in Montgomery County were assigned to 19 Medicare Shared Savings Program ACOs, 56.9% of assignable Original Medicare beneficiaries. Together, roughly 80% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.