Medicare Advantage in Mono County, California
173 people in Mono County, California were enrolled in Medicare Advantage in October 2026, 8.8% of 1,971 eligible beneficiaries (−1.0 pts since October 2025). Humana Inc. is the largest parent organization with 38% of reported enrollment; 5 parent organizations have 11 or more members and the HHI is 2,630 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 18 members here are in plans that terminate or leave the county. MA plans offered go from 4 to 4.
Parent organizations in Mono County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 56 | +37 | 37.6% |
| Elevance Health, Inc. | 41 | −51 | 27.5% |
| UnitedHealth Group, Inc. | 26 | +1 | 17.4% |
| Imperial Health Plan of California | 15 | new | 10.1% |
| CVS Health Corporation | 11 | −17 | 7.4% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 995 beneficiaries in Mono County were assigned to 18 Medicare Shared Savings Program ACOs, 74.9% of assignable Original Medicare beneficiaries. Together, roughly 77% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.