Medicare Advantage in Clay County, Missouri
23,637 people in Clay County, Missouri were enrolled in Medicare Advantage in October 2026, 47.9% of 49,303 eligible beneficiaries (−0.1 pts since October 2025). Humana Inc. is the largest parent organization with 55% of reported enrollment; 9 parent organizations have 11 or more members and the HHI is 3,899 (highly concentrated). For 2027, 176 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 35 to 35.
Parent organizations in Clay County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 12,838 | +7,655 | 54.5% |
| UnitedHealth Group, Inc. | 6,715 | −6,248 | 28.5% |
| CVS Health Corporation | 2,345 | −909 | 9.9% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 1,049 | −48 | 4.5% |
| Devoted Health, Inc. | 260 | new | 1.1% |
| Centene Corporation | 166 | −35 | 0.7% |
| Health Care Service Corporation | 142 | −161 | 0.6% |
| Mitchell Family Office | 37 | −3 | 0.2% |
| Elevance Health, Inc. | 18 | +2 | under 0.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 9,675 beneficiaries in Clay County were assigned to 94 Medicare Shared Savings Program ACOs, 53.0% of assignable Original Medicare beneficiaries. Together, roughly 76% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.