Updated October 2026

Medical groups in California

Medical group directory
California

Medical groups: 10,378
Multi-specialty: 2,304
Single-specialty: 8,073
More than one site: 4,683
100+ physicians: 219

There are 10,378 medical groups in California with a Medicare PAC ID. The Permanente Medical Group, Inc. is the largest, with 11,708 California physicians. Kaiser Permanente has the most physicians across its groups, 22,698, and 73% of California groups are independent.

Find the decision makers at all 10,378 California medical groups

Work emails and mobile numbers for practice owners, administrators and physician leaders, found through healthcare waterfall enrichment, with a free Dmand AI account.

View contacts for free

The Permanente Medical Group, Inc. is the largest medical group in California, with 11,708 physicians

Ranked by physicians with a California address linked to each group. Southern California Permanente Medical Group is second with 11,175, and UCSF Pediatrics third with 3,527. 219 California groups have 100 or more physicians.

Filter this list with a free account

Sort and filter all 10,378 California medical groups by specialty, city, parent organization, group size, EHR in use and decision makers in Dmand AI.

Filter in Dmand AI

Medical groups in California, ranked by physicians, 51 to 100
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
51	San Joaquin County Behavioral Health ServicesStockton · 23 sites	Parent on file	407	687	Decision makers
52	Community Health PartnersClovis · 59 sites	Parent on file	402	627	Decision makers
53	Beverly Radiology Medical GroupLos Angeles · 209 sites	Parent on file	402	413	Decision makers
54	UCI Health PhysiciansOrange · 28 sites	Parent on file	401	530	Decision makers
55	Stanford Medicine PartnersNewark · 56 sites	Parent on file	393	517	Decision makers
56	Martin Luther King Jr. Community Medical GroupLos Angeles · 22 sites	Parent on file	390	463	Decision makers
57	NorthBay Medical CenterFairfield · 29 sites	Parent on file	380	540	Decision makers
58	UCSF Department of Anesthesia and Perioperative CareSan Francisco · 39 sites	Parent on file	378	656	Decision makers
59	Hoag ClinicNewport Beach · 51 sites	Parent on file	370	655	Decision makers
60	Kern MedicalBakersfield · 53 sites	Parent on file	367	534	Decision makers
61	SAC HealthSan Bernardino · 31 sites	Parent on file	364	461	Decision makers
62	Allied Anesthesia Medical GroupOrange · 42 sites	-	353	398	Decision makers
63	San Ysidro HealthSan Diego · 73 sites	Parent on file	350	639	Decision makers
64	Natividad Medical CenterSalinas · 31 sites	Parent on file	344	428	Decision makers
65	El Camino Health Medical NetworkSan Jose · 57 sites	Parent on file	336	427	Decision makers
66	Saint John's Physician PartnersSanta Monica · 45 sites	Parent on file	332	495	Decision makers
67	Greater Modesto Medical Surgical AssociatesModesto · 75 sites	Parent on file	331	431	Decision makers
68	San Joaquin Faculty Medical GroupFrench Camp · 51 sites	-	330	448	Decision makers
69	Chico Hospitalist GroupChico · 37 sites	-	325	489	Decision makers
70	UCI Health Anesthesia & Perioperative Care ServicesOrange · 34 sites	Parent on file	316	503	Decision makers
71	Torrance Memorial Physician NetworkTorrance · 37 sites	Parent on file	313	429	Decision makers
72	CHOC Children'sOrange · 30 sites	Parent on file	305	442	Decision makers
73	Desert Advanced ImagingLos Angeles · 98 sites	Parent on file	298	305	Decision makers
74	Quantum Healthcare Medical Associates IncColton · 24 sites	-	297	316	Decision makers
75	Sansum ClinicSanta Barbara · 36 sites	Parent on file	291	454	Decision makers
76	Riverside Medical ClinicRiverside · 17 sites	Parent on file	284	347	Decision makers
77	BASS Medical GroupWalnut Creek · 96 sites	Parent on file	283	447	Decision makers
78	Indio Community Health CenterRiverside · 65 sites	Parent on file	275	457	Decision makers
79	Providence Medical InstituteTorrance · 65 sites	Parent on file	269	346	Decision makers
80	Anesthesia Service Medical Group (ASMG)San Diego · 5 sites	Parent on file	269	281	Decision makers
81	Ucsf Dept Of SurgerySan Francisco · 70 sites	Parent on file	266	783	Decision makers
82	Inspire Health Medical GroupFresno · 18 sites	-	266	352	Decision makers
83	San Fernando Valley Interventional Radiology & Imaging CenterLos Angeles · 47 sites	Parent on file	264	271	Decision makers
84	UCLA HealthLos Angeles · 22 sites	Parent on file	263	342	Decision makers
85	Santé Foundation Medical GroupFresno · 76 sites	Parent on file	260	541	Decision makers
86	Inspire Health Medical GroupFresno · 16 sites	-	260	354	Decision makers
87	Fresno Imaging CenterLos Angeles · 58 sites	Parent on file	252	259	Decision makers
88	Pronet Imaging Medical GroupLos Angeles · 40 sites	Parent on file	250	255	Decision makers
89	UCSF Medical GroupSan Francisco · 34 sites	Parent on file	248	380	Decision makers
90	NorCal ImagingLos Angeles · 56 sites	Parent on file	247	254	Decision makers
91	ProHealth PartnersLakewood · 89 sites	Parent on file	239	343	Decision makers
92	UCLA Entertainment Industry Medical GroupLos Angeles · 22 sites	Parent on file	239	269	Decision makers
93	Modesto Advanced Imaging CenterLos Angeles · 36 sites	Parent on file	236	241	Decision makers
94	Diagnostic Radiological Imaging - SacramentoSacramento · 35 sites	Parent on file	235	240	Decision makers
95	Santa Rosa Imaging Medical CenterLos Angeles · 20 sites	Parent on file	234	239	Decision makers
96	SHIPMG RadiologySan Diego · 27 sites	-	233	293	Decision makers
97	Kern RadiologyBakersfield · 42 sites	Parent on file	230	233	Decision makers
98	Saint Agnes CareFresno · 26 sites	Parent on file	225	289	Decision makers
99	RadNet Medical Imaging - San FranciscoSan Francisco · 32 sites	Parent on file	225	229	Decision makers
100	UCLA Health / UCLA Medical GroupLos Angeles · 13 sites	Parent on file	220	295	Decision makers

Showing 51 to 100 of 10,378 medical groups in California

Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data

For sales teams

Find the decision makers at California medical groups

Dmand AI maps the owners, administrators and physician leaders at each of the 10,378 California medical groups, with the parent organization above each one, and finds validated work emails and mobile numbers.

Try for free Book a meeting

Dmand AI

Find the right contacts at every California medical group

Search 10,378 groups by specialty, size and parent organization, with the physicians and leaders at each one.

Start free trial Book a demo

30 days free
Self-serve
No credit card