Medicare Advantage in Clayton County, Georgia
28,971 people in Clayton County, Georgia were enrolled in Medicare Advantage in October 2026, 67.3% of 43,026 eligible beneficiaries (+2.4 pts since October 2025). Humana Inc. is the largest parent organization with 33% of reported enrollment; 12 parent organizations have 11 or more members and the HHI is 2,006 (highly concentrated). For 2027, 3,354 members here are in plans that terminate or leave the county, and CareSource leaves. MA plans offered go from 56 to 49.
Parent organizations in Clayton County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 9,644 | +1,902 | 33.4% |
| CVS Health Corporation | 5,364 | +380 | 18.6% |
| UnitedHealth Group, Inc. | 5,087 | −1,571 | 17.6% |
| Kaiser Foundation Health Plan, Inc. | 3,688 | +278 | 12.8% |
| Devoted Health, Inc. | 1,607 | +1,238 | 5.6% |
| Elevance Health, Inc. | 1,333 | −242 | 4.6% |
| Centene Corporation | 1,263 | −47 | 4.4% |
| Health Care Service Corporation | 582 | −5 | 2.0% |
| Clover Health Holdings, Inc. | 229 | +142 | 0.8% |
| CareSource | 52 | new | 0.2% |
| UNICO Services, Inc. | 28 | new | under 0.1% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 25 | 0 | 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, 3,392 beneficiaries in Clayton County were assigned to 72 Medicare Shared Savings Program ACOs, 52.5% of assignable Original Medicare beneficiaries. Together, roughly 84% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.