Medicare Advantage in Calaveras County, California
2,023 people in Calaveras County, California were enrolled in Medicare Advantage in October 2026, 13.9% of 14,587 eligible beneficiaries (−2.0 pts since October 2025). Humana Inc. is the largest parent organization with 38% of reported enrollment; 9 parent organizations have 11 or more members and the HHI is 2,350 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 219 members here are in plans that terminate or leave the county, and Kaiser Foundation Health Plan, Inc. leaves. MA plans offered go from 2 to 2.
Parent organizations in Calaveras County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 760 | +273 | 38.4% |
| UnitedHealth Group, Inc. | 396 | +9 | 20.0% |
| Elevance Health, Inc. | 357 | −350 | 18.0% |
| Kaiser Foundation Health Plan, Inc. | 177 | −24 | 8.9% |
| California Physicians' Service | 149 | +6 | 7.5% |
| CVS Health Corporation | 59 | −239 | 3.0% |
| Centene Corporation | 53 | +33 | 2.7% |
| SCAN Group | 19 | new | 1.0% |
| Imperial Health Plan of California | 11 | new | 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, 1,422 beneficiaries in Calaveras County were assigned to 52 Medicare Shared Savings Program ACOs, 15.8% of assignable Original Medicare beneficiaries. Together, roughly 27% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.