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.

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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.

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Medical groups in California, ranked by physicians, 451 to 500
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
451	WellSpace HealthSacramento · 25 sites	Parent on file	49	138	Decision makers
452	MLK Community Medical GroupLos Angeles · 8 sites	Parent on file	49	70	Decision makers
453	Skilled Physicians GroupLos Angeles · 4 sites	-	49	61	Decision makers
454	UCLA UrologyLos Angeles · 10 sites	Parent on file	49	59	Decision makers
455	Chico Emergency Physicians Medical GroupChico · 5 sites	Parent on file	49	57	Decision makers
456	Radiology Associates of San Luis ObispoTempleton · 42 sites	-	49	53	Decision makers
457	Pacific Coast Emergency Medical Associates, Inc.Long Beach · 4 sites	-	49	51	Decision makers
458	Synovation Medical GroupRancho Cucamonga · 32 sites	Parent on file	48	141	Decision makers
459	Acuity Eye GroupArcadia · 36 sites	Parent on file	48	97	Decision makers
460	St. Jude Emergency Medicine GroupFullerton · 8 sites	Parent on file	48	83	Decision makers
461	Fresno Long Term Care Medical GroupFresno · 24 sites	-	48	81	Decision makers
462	UCI Health Center for Urological CareOrange · 5 sites	Parent on file	48	80	Decision makers
463	Integrative Sports & SpineIrvine · 23 sites	Parent on file	48	78	Decision makers
464	Barton Health (Barton Memorial Hospital)South Lake Tahoe · 10 sites	Parent on file	48	72	Decision makers
465	Torrance Emergency PhysiciansTorrance · 5 sites	Parent on file	48	68	Decision makers
466	Ventura Anesthesia Medical GroupVentura · 6 sites	Parent on file	48	48	Decision makers
467	Integrated Rehab ConsultantsPlaya Del Ray · 46 sites	Parent on file	47	92	Decision makers
468	Los Robles Emergency Physicians Medical GroupThousand Oaks · 8 sites	Parent on file	47	71	Decision makers
469	Arcadia Hospitalist Medical GroupArcadia · 7 sites	-	47	65	Decision makers
470	Central Coast Inpatient ConsultantsSanta Maria · 6 sites	Parent on file	47	51	Decision makers
471	UCI Health Dermatology ServicesOrange · 4 sites	Parent on file	47	51	Decision makers
472	The Hill Medical CorporationArcadia · 50 sites	Parent on file	47	50	Decision makers
473	RadiologicaSan Andreas · 31 sites	-	47	48	Decision makers
474	Monterey Hospitalist Medical GroupMonterey · 5 sites	Parent on file	47	47	Decision makers
475	West Hills AnesthesiaWest Hills · 6 sites	Parent on file	47	47	Decision makers
476	Circle MedicalSan Francisco · 24 sites	Parent on file	46	159	Decision makers
477	Doctors on Duty Medical ClinicsMonterey · 13 sites	Parent on file	46	131	Decision makers
478	Senior Medical AssociatesSan Diego · 6 sites	Parent on file	46	93	Decision makers
479	Jiva HealthConcord · 24 sites	-	46	83	Decision makers
480	Health Alliance SoCalInglewood · 4 sites	-	46	78	Decision makers
481	One MedicalSan Francisco · 18 sites	Parent on file	46	71	Decision makers
482	Los Angeles County Department of Public HealthCommerce · 12 sites	Parent on file	46	63	Decision makers
483	West Coast Kidney InstituteConcord · 15 sites	-	46	60	Decision makers
484	VituityEmeryville · 5 sites	Parent on file	46	58	Decision makers
485	Conejo Los Robles Anesthesiology Medical Group (CLRAMG)Thousand Oaks · 5 sites	Parent on file	46	50	Decision makers
486	San Diego Imaging Medical GroupChula Vista · 3 sites	-	46	46	Decision makers
487	Premier Family Medicine AssociatesPomona · 5 sites	Parent on file	45	70	Decision makers
488	Emergency Specialist Physicians Medical Associates (ESPMA)Torrance · 5 sites	-	45	68	Decision makers
489	SoHum Health - Jerold Phelps Community HospitalGarberville · 3 sites	Parent on file	45	59	Decision makers
490	Oak Creek Anesthesia Services, Inc.Visalia · 12 sites	Parent on file	44	110	Decision makers
491	Fresno County Department of Behavioral HealthFresno · 12 sites	Parent on file	44	92	Decision makers
492	Hp Anesthesia IncLos Angeles · 8 sites	-	44	78	Decision makers
493	UCI Department of Psychiatry & Human BehaviorOrange · 5 sites	Parent on file	44	58	Decision makers
494	Contra Costa OncologyWalnut Creek · 4 sites	-	44	53	Decision makers
495	UCLA Medical Group (UCLA Health)Los Angeles · 5 sites	Parent on file	44	50	Decision makers
496	Radiology Medical GroupLos Angeles · 22 sites	Parent on file	44	47	Decision makers
497	California Cardiovascular Consultants and Medical AssociatesFremont · 10 sites	-	44	46	Decision makers
498	RadX Imaging PartnersHollister · 54 sites	Parent on file	44	44	Decision makers
499	Vista Community ClinicVista · 6 sites	Parent on file	43	119	Decision makers
500	Bartz-Altadonna Community Health CenterLancaster · 4 sites	Parent on file	43	83	Decision makers

Showing 451 to 500 of 10,378 medical groups in California

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

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