MA payer · 1 active contracts

UHC OF CALIFORNIA

253,288

Total MA enrolled

Counties served

States served

Largest state

Top states by enrollment

1CA253,251
2AZ24
3NV13

Top counties

by single-county enrollment

Los Angeles, CA
HMO/HMOPOS · contract H0543
64,891
San Diego, CA
HMO/HMOPOS · contract H0543
56,493
Riverside, CA
HMO/HMOPOS · contract H0543
33,192
San Bernardino, CA
HMO/HMOPOS · contract H0543
31,823
Orange, CA
HMO/HMOPOS · contract H0543
29,778
Sacramento, CA
HMO/HMOPOS · contract H0543
5,160
Kern, CA
HMO/HMOPOS · contract H0543
4,501
Contra Costa, CA
HMO/HMOPOS · contract H0543
4,487
Santa Clara, CA
HMO/HMOPOS · contract H0543
2,546
Nevada, CA
HMO/HMOPOS · contract H0543
2,393
Alameda, CA
HMO/HMOPOS · contract H0543
2,316
El Dorado, CA
HMO/HMOPOS · contract H0543
2,139
Placer, CA
HMO/HMOPOS · contract H0543
2,050
Merced, CA
HMO/HMOPOS · contract H0543
1,519
Mendocino, CA
HMO/HMOPOS · contract H0543
1,488

Plan-type mix (enrollment)

HMO/HMOPOS

253,288 enrolled

Source: CMS Monthly MA Enrollment by State/County/Contract (May 2026, abridged). Enrollment counts ≤ 10 are excluded from the source file (HIPAA suppression).