Medicare Advantage in Charles County, Maryland
7,531 people in Charles County, Maryland were enrolled in Medicare Advantage in October 2026, 24.9% of 30,230 eligible beneficiaries (−0.8 pts since October 2025). Humana Inc. is the largest parent organization with 27% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 2,287 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 1,707 members here are in plans that terminate or leave the county. MA plans offered go from 16 to 13.
Parent organizations in Charles County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 2,042 | +1,113 | 27.4% |
| CareFirst, Inc. | 1,919 | +779 | 25.8% |
| Kaiser Foundation Health Plan, Inc. | 1,850 | +60 | 24.8% |
| UnitedHealth Group, Inc. | 1,104 | −1,932 | 14.8% |
| CVS Health Corporation | 416 | +17 | 5.6% |
| LifeBridge Health, Inc. | 101 | +43 | 1.4% |
| Elevance Health, Inc. | 13 | −2 | 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, 2,941 beneficiaries in Charles County were assigned to 88 Medicare Shared Savings Program ACOs, 19.2% of assignable Original Medicare beneficiaries. Together, roughly 39% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.