Medicare Advantage in Sacramento County, California
187,591 people in Sacramento County, California were enrolled in Medicare Advantage in October 2026, 62.9% of 298,056 eligible beneficiaries (+0.8 pts since October 2025). Kaiser Foundation Health Plan, Inc. is the largest parent organization with 59% of reported enrollment; 20 parent organizations have 11 or more members and the HHI is 3,759 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 32,005 members here are in plans that terminate or leave the county, and Health Plan of San Mateo, SANTA CLARA COUNTY HEALTH AUTHORITY leave. MA plans offered go from 22 to 16.
Parent organizations in Sacramento County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Kaiser Foundation Health Plan, Inc. | 109,872 | +3,098 | 58.7% |
| Elevance Health, Inc. | 23,638 | +2,702 | 12.6% |
| UnitedHealth Group, Inc. | 17,632 | −8,075 | 9.4% |
| Alignment Healthcare USA, LLC | 10,385 | +2,288 | 5.5% |
| SCAN Group | 8,122 | +8,107 | 4.3% |
| CVS Health Corporation | 4,899 | −623 | 2.6% |
| California Physicians' Service | 3,730 | +535 | 2.0% |
| Centene Corporation | 3,407 | −447 | 1.8% |
| Molina Healthcare, Inc. | 2,593 | −1,333 | 1.4% |
| Imperial Health Plan of California | 1,129 | +149 | 0.6% |
| Total Community Options, Inc. | 575 | +106 | 0.3% |
| Sutter Valley Hospitals | 513 | +74 | 0.3% |
| Tungsten Health Holdings, LLC | 259 | +144 | 0.1% |
| WelbeHealth LLC. | 199 | +154 | 0.1% |
| Humana Inc. | 149 | +40 | under 0.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 32,978 beneficiaries in Sacramento County were assigned to 173 Medicare Shared Savings Program ACOs, 49.6% of assignable Original Medicare beneficiaries. Together, roughly 81% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.