October 1 update. Our PDGM and ICD-10 tools now use the FY2027 code set: 190 codes added, 30 deleted, and no existing code changed clinical group.

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Home health by county in California

California has 58 counties. 54 of them have agencies with published Medicare home health volume in 2025: 2,451 agencies billing for 385,170 users statewide. The typical California county has 96 users per agency.

Los Angeles
1,847
133,713
72
Orange
312
29,911
96
San Bernardino
214
11,125
52
Riverside
178
15,855
89
San Diego
135
26,165
194
Ventura
132
11,495
87
Alameda
106
12,275
116
Santa Clara
88
12,608
143
Sacramento
84
12,055
144
Contra Costa
80
9,919
124
Kern
70
7,308
104
San Francisco
59
7,553
128
Fresno
56
7,359
131
San Mateo
56
5,757
103
San Joaquin
53
5,205
98
Imperial
45
4,909
109
Placer
44
4,036
92
Solano
43
3,944
92
Stanislaus
33
3,815
116
Tulare
28
3,709
133
El Dorado
26
2,137
82
Merced
24
2,678
112
Napa
23
1,301
57
Sonoma
23
4,255
185
Yolo
23
1,528
66
Madera
22
1,059
48
Marin
21
2,852
136
Kings
17
1,044
61
San Luis Obispo
17
5,438
320
Santa Cruz
17
3,435
202
Santa Barbara
16
6,524
408
Monterey
14
4,750
339
Sutter
14
1,412
101
Butte
13
3,312
255
Nevada
13
1,708
131
San Benito
13
797
61
Shasta
11
3,474
316
Tehama
11
961
87
Yuba
10
926
93
Calaveras
8
934
117
Glenn
6
440
73
Amador
5
788
158
Mariposa
5
262
52
Mendocino
5
660
132
Colusa
4
290
73
Lake
3
775
258
Tuolumne
3
999
333
Del Norte
1
265
265
Humboldt
1
685
685
Inyo
1
151
151
Lassen
1
174
174
Plumas
1
214
214
Sierra
1
23
23
Trinity
1
52
52
Siskiyou
107 users · no agency with Medicare volume
Mono
26 users · no agency with Medicare volume
Modoc
18 users · no agency with Medicare volume
Alpine
not published (fewer than 11 users)

Sources: CMS Market Saturation & Utilization, Home Health, 2025. Medicare fee-for-service only. Counts under 11 are not published by CMS.