Medicare Advantage in Modoc County, California
119 people in Modoc County, California were enrolled in Medicare Advantage in October 2026, 4.5% of 2,652 eligible beneficiaries (+0.1 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 44% of reported enrollment; 3 parent organizations have 11 or more members and the HHI is 3,907 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 0 members here are in plans that terminate or leave the county. MA plans offered go from 2 to 2.
Parent organizations in Modoc County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 38 | +22 | 43.7% |
| Imperial Health Plan of California | 37 | 0 | 42.5% |
| Elevance Health, Inc. | 12 | −21 | 13.8% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 379 beneficiaries in Modoc County were assigned to 18 Medicare Shared Savings Program ACOs, 19.9% of assignable Original Medicare beneficiaries. Together, roughly 23% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.