Medicare Advantage in Washington County, Maryland
8,313 people in Washington County, Maryland were enrolled in Medicare Advantage in October 2026, 24.1% of 34,507 eligible beneficiaries (−1.0 pts since October 2025). Humana Inc. is the largest parent organization with 50% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 3,117 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 2,911 members here are in plans that terminate or leave the county. MA plans offered go from 16 to 14.
Parent organizations in Washington County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 4,123 | +1,201 | 50.1% |
| CareFirst, Inc. | 1,365 | +591 | 16.6% |
| UnitedHealth Group, Inc. | 969 | −2,036 | 11.8% |
| CVS Health Corporation | 942 | −51 | 11.4% |
| Johns Hopkins Healthcare LLC | 638 | +59 | 7.8% |
| LifeBridge Health, Inc. | 168 | +114 | 2.0% |
| Highmark Health | 27 | −1 | 0.3% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 3,931 beneficiaries in Washington County were assigned to 69 Medicare Shared Savings Program ACOs, 19.5% 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.