Medicare Advantage in Pettis County, Missouri
4,437 people in Pettis County, Missouri were enrolled in Medicare Advantage in October 2026, 46.8% of 9,477 eligible beneficiaries (+0.3 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 50% of reported enrollment; 4 parent organizations have 11 or more members and the HHI is 4,385 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 147 members here are in plans that terminate or leave the county. MA plans offered go from 16 to 15.
Parent organizations in Pettis County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 2,225 | −452 | 50.5% |
| Humana Inc. | 1,860 | +1,053 | 42.2% |
| CVS Health Corporation | 307 | −500 | 7.0% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 12 | −1 | 0.3% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 2,963 beneficiaries in Pettis County were assigned to 31 Medicare Shared Savings Program ACOs, 77.8% of assignable Original Medicare beneficiaries. Together, roughly 88% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.