Medicare Advantage in Nevada County, California
5,854 people in Nevada County, California were enrolled in Medicare Advantage in October 2026, 18.2% of 32,146 eligible beneficiaries (−1.7 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 66% of reported enrollment; 9 parent organizations have 11 or more members and the HHI is 4,577 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 121 members here are in plans that terminate or leave the county, and Kaiser Foundation Health Plan, Inc., SCAN Group leave. MA plans offered go from 3 to 3.
Parent organizations in Nevada County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 3,796 | −648 | 65.7% |
| Imperial Health Plan of California | 662 | +166 | 11.5% |
| California Physicians' Service | 505 | +10 | 8.7% |
| Elevance Health, Inc. | 353 | −40 | 6.1% |
| CVS Health Corporation | 171 | −7 | 3.0% |
| Kaiser Foundation Health Plan, Inc. | 146 | −28 | 2.5% |
| SCAN Group | 66 | new | 1.1% |
| Alignment Healthcare USA, LLC | 45 | +34 | 0.8% |
| Humana Inc. | 35 | +21 | 0.6% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 6,613 beneficiaries in Nevada County were assigned to 79 Medicare Shared Savings Program ACOs, 33.7% of assignable Original Medicare beneficiaries. Together, roughly 46% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.