MA payer · 4 active contracts

KAISER FOUNDATION HP, INC.

1,551,173

Total MA enrolled

Counties served

States served

Largest state

Top states by enrollment

1CA1,513,366
2HI37,207
3NV264
4AZ200
5OR39
6TX36
7WA25
8ID14
9GA11
10SD11

Top counties

by single-county enrollment

Los Angeles, CA
HMO/HMOPOS · contract H0524
296,563
San Diego, CA
HMO/HMOPOS · contract H0524
104,965
Alameda, CA
HMO/HMOPOS · contract H0524
95,290
Sacramento, CA
HMO/HMOPOS · contract H0524
91,818
Contra Costa, CA
HMO/HMOPOS · contract H0524
82,993
Riverside, CA
HMO/HMOPOS · contract H0524
82,041
Santa Clara, CA
HMO/HMOPOS · contract H0524
81,038
Orange, CA
HMO/HMOPOS · contract H0524
80,220
San Bernardino, CA
HMO/HMOPOS · contract H0524
73,953
Sonoma, CA
HMO/HMOPOS · contract H0524
48,337
San Mateo, CA
HMO/HMOPOS · contract H0524
40,383
Solano, CA
HMO/HMOPOS · contract H0524
39,776
Los Angeles, CA
HMO/HMOPOS · contract H8794
38,741
Placer, CA
HMO/HMOPOS · contract H0524
33,272
San Francisco, CA
HMO/HMOPOS · contract H0524
32,718

Plan-type mix (enrollment)

HMO/HMOPOS

1,551,173 enrolled

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