Medicare Advantage in Jackson County, Mississippi
16,465 people in Jackson County, Mississippi were enrolled in Medicare Advantage in October 2026, 50.3% of 32,760 eligible beneficiaries (+0.4 pts since October 2025). Humana Inc. is the largest parent organization with 50% of reported enrollment; 9 parent organizations have 11 or more members and the HHI is 3,091 (highly concentrated). For 2027, 1,252 members here are in plans that terminate or leave the county, and BlueCross BlueShield of Alabama leaves. MA plans offered go from 31 to 37.
Parent organizations in Jackson County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 8,192 | +1,287 | 50.0% |
| UnitedHealth Group, Inc. | 3,070 | −95 | 18.7% |
| Health Care Service Corporation | 1,611 | −241 | 9.8% |
| CVS Health Corporation | 1,408 | −534 | 8.6% |
| BlueCross BlueShield of Alabama | 1,237 | −148 | 7.5% |
| Centene Corporation | 648 | +208 | 4.0% |
| Elevance Health, Inc. | 175 | −3 | 1.1% |
| Mitchell Family Office | 35 | +6 | 0.2% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 19 | −4 | 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, 6,990 beneficiaries in Jackson County were assigned to 78 Medicare Shared Savings Program ACOs, 60.1% 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.