Medicare Advantage in Calvert County, Maryland
3,572 people in Calvert County, Maryland were enrolled in Medicare Advantage in October 2026, 18.3% of 19,562 eligible beneficiaries (+2.5 pts since October 2025). CareFirst, Inc. is the largest parent organization with 38% of reported enrollment; 5 parent organizations have 11 or more members and the HHI is 2,672 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 139 members here are in plans that terminate or leave the county. MA plans offered go from 12 to 12.
Parent organizations in Calvert County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CareFirst, Inc. | 1,344 | +1,047 | 38.2% |
| Humana Inc. | 1,019 | +518 | 29.0% |
| UnitedHealth Group, Inc. | 497 | −968 | 14.1% |
| Kaiser Foundation Health Plan, Inc. | 337 | −1 | 9.6% |
| CVS Health Corporation | 322 | −10 | 9.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,541 beneficiaries in Calvert County were assigned to 71 Medicare Shared Savings Program ACOs, 13.1% of assignable Original Medicare beneficiaries. Together, roughly 29% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.