Medicare Advantage in Gwinnett County, Georgia
79,690 people in Gwinnett County, Georgia were enrolled in Medicare Advantage in October 2026, 57.3% of 139,109 eligible beneficiaries (+1.2 pts since October 2025). Humana Inc. is the largest parent organization with 29% of reported enrollment; 14 parent organizations have 11 or more members and the HHI is 1,882 (highly concentrated). For 2027, 9,562 members here are in plans that terminate or leave the county, and CareSource leaves. MA plans offered go from 58 to 53.
Parent organizations in Gwinnett County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 23,209 | +5,592 | 29.2% |
| CVS Health Corporation | 17,147 | −2,748 | 21.6% |
| UnitedHealth Group, Inc. | 14,916 | −4,461 | 18.8% |
| Devoted Health, Inc. | 7,149 | new | 9.0% |
| Kaiser Foundation Health Plan, Inc. | 6,988 | +447 | 8.8% |
| Elevance Health, Inc. | 5,069 | −557 | 6.4% |
| Health Care Service Corporation | 2,087 | −681 | 2.6% |
| Centene Corporation | 1,879 | −99 | 2.4% |
| Clover Health Holdings, Inc. | 711 | +394 | 0.9% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 145 | +4 | 0.2% |
| UNICO Services, Inc. | 130 | +41 | 0.2% |
| CareSource | 43 | +31 | under 0.1% |
| California Physicians' Service | 14 | 0 | under 0.1% |
| Highmark Health | 13 | −1 | 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, 12,220 beneficiaries in Gwinnett County were assigned to 195 Medicare Shared Savings Program ACOs, 35.5% of assignable Original Medicare beneficiaries. Together, roughly 72% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.