Medicare Advantage in Catoosa County, Georgia
7,833 people in Catoosa County, Georgia were enrolled in Medicare Advantage in October 2026, 50.6% of 15,492 eligible beneficiaries (+0.2 pts since October 2025). BlueCross BlueShield of Tennessee is the largest parent organization with 28% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 1,980 (highly concentrated). For 2027, 1,994 members here are in plans that terminate or leave the county. MA plans offered go from 46 to 44.
Parent organizations in Catoosa County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| BlueCross BlueShield of Tennessee | 2,176 | +381 | 28.0% |
| Humana Inc. | 1,933 | −202 | 24.8% |
| UnitedHealth Group, Inc. | 1,466 | −120 | 18.8% |
| Health Care Service Corporation | 957 | −21 | 12.3% |
| Elevance Health, Inc. | 487 | −81 | 6.3% |
| CVS Health Corporation | 366 | +18 | 4.7% |
| Devoted Health, Inc. | 291 | +218 | 3.7% |
| Centene Corporation | 71 | +17 | 0.9% |
| UNICO Services, Inc. | 23 | +2 | 0.3% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 14 | 0 | 0.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 3,908 beneficiaries in Catoosa County were assigned to 42 Medicare Shared Savings Program ACOs, 70.9% of assignable Original Medicare beneficiaries. Together, roughly 86% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.