Medicare Advantage in Harford County, Maryland
14,379 people in Harford County, Maryland were enrolled in Medicare Advantage in October 2026, 24.9% of 57,758 eligible beneficiaries (+0.1 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 36% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 2,053 (highly concentrated). For 2027, 1,557 members here are in plans that terminate or leave the county, and CVS Health Corporation leaves. MA plans offered go from 19 to 15.
Parent organizations in Harford County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 5,093 | −4 | 35.7% |
| CVS Health Corporation | 2,575 | −372 | 18.0% |
| Kaiser Foundation Health Plan, Inc. | 1,752 | +6 | 12.3% |
| CareFirst, Inc. | 1,707 | +538 | 12.0% |
| Humana Inc. | 1,427 | +266 | 10.0% |
| Health Care Service Corporation | 823 | −80 | 5.8% |
| LifeBridge Health, Inc. | 707 | +176 | 5.0% |
| Elevance Health, Inc. | 159 | −17 | 1.1% |
| Highmark Health | 14 | −1 | under 0.1% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 12 | +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, 4,844 beneficiaries in Harford County were assigned to 110 Medicare Shared Savings Program ACOs, 16.0% of assignable Original Medicare beneficiaries. Together, roughly 37% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.