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, 1,451 to 1,500
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
1451	Unified Health AssociatesLancaster · 3 sites	-	9	14	Decision makers
1452	Ventura Cardiology ConsultantsVentura · 2 sites	-	9	14	Decision makers
1453	VITAS HealthcareCovina · 4 sites	Parent on file	9	14	Decision makers
1454	White Memorial Medical GroupLos Angeles · 1 site	Parent on file	9	14	Decision makers
1455	Cabrillo Cardiology Medical GroupOxnard · 2 sites	-	9	13	Decision makers
1456	Central Coast NephrologySalinas · 2 sites	-	9	13	Decision makers
1457	Elevate Health CenterSun Valley · 3 sites	Parent on file	9	13	Decision makers
1458	Gastroenterology Medical ClinicFolsom · 2 sites	-	9	13	Decision makers
1459	Kidney Disease Medical GroupGlendale · 2 sites	Parent on file	9	13	Decision makers
1460	Mercy Doctors Medical GroupSan Francisco · 1 site	-	9	13	Decision makers
1461	One Health Primary CareSan Jose · 2 sites	-	9	13	Decision makers
1462	Sierra Care PhysiciansGrass Valley · 2 sites	-	9	13	Decision makers
1463	Summit NephrologyRoseville · 2 sites	-	9	13	Decision makers
1464	Allergy Partners of California Central CoastSan Luis Obispo · 6 sites	Parent on file	9	12	Decision makers
1465	Altais Medical Group \| RiversideRiverside · 1 site	Parent on file	9	12	Decision makers
1466	Aria Vascular CenterStockton · 2 sites	-	9	12	Decision makers
1467	CEP AmericaEmeryville · 13 sites	Parent on file	9	12	Decision makers
1468	ENT Associates of San DiegoLa Mesa · 2 sites	-	9	12	Decision makers
1469	Haven Elite Urgent CareRancho Cucamonga · 1 site	-	9	12	Decision makers
1470	Integrated Critical Care and Pulmonary SpecialistsOrange · 2 sites	-	9	12	Decision makers
1471	Manzanita Medical ClinicCarmichael · 1 site	Parent on file	9	12	Decision makers
1472	Northridge Trauma SurgeonsNorthridge · 2 sites	-	9	12	Decision makers
1473	Paradise Valley Medical Group IncNational City · 4 sites	-	9	12	Decision makers
1474	Saddleback Pulmonary Associates (SPA)Laguna Hills · 2 sites	-	9	12	Decision makers
1475	Hilltop Medical ClinicRedding · 1 site	Parent on file	9	11	Decision makers
1476	MedBridge DevelopmentSanta Barbara · 3 sites	Parent on file	9	11	Decision makers
1477	Our Family Medical Group, Inc.Rancho Cucamonga · 4 sites	Parent on file	9	11	Decision makers
1478	Porterville Community PhysiciansPorterville · 3 sites	-	9	11	Decision makers
1479	Pro Care Medical GroupDanville · 2 sites	-	9	11	Decision makers
1480	Rodeo Drive Women's Health CenterBeverly Hills · 3 sites	-	9	11	Decision makers
1481	South Bay Eye InstituteRedondo Beach · 3 sites	-	9	11	Decision makers
1482	United Neuroscience InstituteBakersfield · 7 sites	-	9	11	Decision makers
1483	Anesthesia Associates of ChicoChico · 3 sites	Parent on file	9	10	Decision makers
1484	FHC Medical GroupModesto · 1 site	-	9	10	Decision makers
1485	Golden State Medical GroupMontclair · 2 sites	-	9	10	Decision makers
1486	Inland Physicians Medical GroupMontclair · 1 site	-	9	10	Decision makers
1487	Oaks Surgical SpecialistsNorthridge · 2 sites	-	9	10	Decision makers
1488	Pacific Sleep Disorders CenterStockton · 3 sites	-	9	10	Decision makers
1489	Pathology Associates of Southern CaliforniaBurbank · 4 sites	Parent on file	9	10	Decision makers
1490	Premier Hospitalists of BakersfieldBakersfield · 3 sites	-	9	10	Decision makers
1491	Pulmonary Disease SpecialistsStockton · 1 site	-	9	10	Decision makers
1492	Rehabilitation Associates Medical GroupLong Beach · 3 sites	-	9	10	Decision makers
1493	Reza Shahbaz, M.D., Inc.Orange · 7 sites	-	9	10	Decision makers
1494	The Heart GroupFresno · 1 site	-	9	10	Decision makers
1495	VituityEmeryville · 14 sites	Parent on file	9	10	Decision makers
1496	Whittier Internal Medicine & Nephrology Medical GroupWhittier · 1 site	Parent on file	9	10	Decision makers
1497	Advanced Radiology and Interventional Associates (ARIA), Inc.Modesto · 6 sites	-	9	9	Decision makers
1498	Central Coast Chest ConsultantsSan Luis Obispo · 5 sites	-	9	9	Decision makers
1499	Clear DermatologyTorrance · 3 sites	-	9	9	Decision makers
1500	Discover HealthNapa · 4 sites	Parent on file	9	9	Decision makers

Showing 1,451 to 1,500 of 10,378 medical groups in California

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

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