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, 501 to 550
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
501	Capital Hospitalist Medical GroupLos Angeles · 7 sites	-	43	67	Decision makers
502	Napa Valley Emergency Medical GroupNapa · 6 sites	Parent on file	43	61	Decision makers
503	Shasta Regional Medical GroupRedding · 6 sites	Parent on file	43	60	Decision makers
504	Mayers Memorial Healthcare DistrictFall River Mills · 4 sites	Parent on file	43	55	Decision makers
505	Bel Air Critical Care Medical GroupLos Angeles · 4 sites	-	43	54	Decision makers
506	Vibra HealthcareFresno · 15 sites	Parent on file	43	46	Decision makers
507	AnesthesiaWorksEl Segundo · 6 sites	Parent on file	43	43	Decision makers
508	Chula Vista Emergency Room PhysiciansChula Vista · 5 sites	Parent on file	43	43	Decision makers
509	Mountain View Urgent CareFontana · 12 sites	Parent on file	42	126	Decision makers
510	Complete Care Community Health CenterLos Angeles · 17 sites	Parent on file	42	110	Decision makers
511	San Manuel Indian Health ClinicGrand Terrace · 18 sites	Parent on file	42	105	Decision makers
512	Adventist Health Community Care-HanfordHanford · 5 sites	Parent on file	42	87	Decision makers
513	OrthoWestLaguna Woods · 10 sites	-	42	79	Decision makers
514	Burbank Emergency Medical GroupBurbank · 6 sites	Parent on file	42	77	Decision makers
515	East Valley Emergency Medical AssociatesWhittier · 4 sites	Parent on file	42	76	Decision makers
516	Seaside Emergency AssociatesVentura · 5 sites	Parent on file	42	59	Decision makers
517	Coastline Emergency Physicians Medical GroupEncinitas · 5 sites	-	42	53	Decision makers
518	Pacific Eye InstituteUpland · 18 sites	Parent on file	42	53	Decision makers
519	Monterey Bay Observation MedicineMonterey · 5 sites	Parent on file	42	51	Decision makers
520	Premier Health PartnersBlythe · 3 sites	Parent on file	42	49	Decision makers
521	Samaritan Anesthesiology Medical GroupLos Angeles · 4 sites	Parent on file	42	46	Decision makers
522	Berkeley Emergency Medical Group (BEMG)Oakland · 4 sites	-	42	45	Decision makers
523	Metropolitan Anesthesia ConsultantsCarmichael · 7 sites	Parent on file	42	44	Decision makers
524	Pediatric Anesthesia Associates Medical GroupMadera · 3 sites	-	42	43	Decision makers
525	Coast Plaza Emergency PhysiciansNorwalk · 3 sites	Parent on file	42	42	Decision makers
526	One Community HealthSacramento · 9 sites	Parent on file	41	100	Decision makers
527	Advantage Surgical and Wound CareEl Segundo · 121 sites	Parent on file	41	88	Decision makers
528	HealthpointeLa Mirada · 18 sites	Parent on file	41	86	Decision makers
529	Planned Parenthood Northern CaliforniaConcord · 22 sites	Parent on file	41	67	Decision makers
530	East Campus Hospitalist Medical Group, Inc.El Segundo · 5 sites	-	41	47	Decision makers
531	Chest Medicine & Critical CareSan Diego · 10 sites	-	41	46	Decision makers
532	Anesthesia Medical Group of Santa CruzSanta Cruz · 4 sites	Parent on file	41	43	Decision makers
533	Mills Peninsula Emergency Medical AssociatesBurlingame · 6 sites	Parent on file	41	43	Decision makers
534	St. Joseph Hospitalist Medical GroupBurbank · 10 sites	Parent on file	41	43	Decision makers
535	Citrus Valley Anesthesia Medical GroupWest Covina · 7 sites	-	41	41	Decision makers
536	OC Health Care AgencySanta Ana · 27 sites	Parent on file	40	157	Decision makers
537	Mission City Community Network North Hills ClinicNorth Hills · 17 sites	Parent on file	40	155	Decision makers
538	Glendale Adventist Emergency PhysiciansGlendale · 8 sites	Parent on file	40	93	Decision makers
539	Trinity Emergency PhysiciansRedding · 7 sites	Parent on file	40	77	Decision makers
540	UCI Health Orthopaedic Surgery ServicesOrange · 3 sites	Parent on file	40	70	Decision makers
541	Culver Emergency Medical GroupCulver City · 4 sites	-	40	66	Decision makers
542	Orthopaedic Specialty InstituteOrange · 7 sites	-	40	65	Decision makers
543	Humboldt County Public HealthEureka · 2 sites	Parent on file	40	61	Decision makers
544	Redondo Emergency PhysiciansGardena · 1 site	Parent on file	40	54	Decision makers
545	Alertive Healthcare Medical GroupRiverside · 4 sites	Parent on file	40	50	Decision makers
546	Arya Medical GroupFresno · 8 sites	-	40	47	Decision makers
547	South Bay Anesthesia Medical GroupTorrance · 7 sites	-	40	46	Decision makers
548	Anesthesia Medical Group of Santa BarbaraSanta Barbara · 3 sites	-	40	42	Decision makers
549	Advanced Imaging of South BayTorrance · 6 sites	-	40	40	Decision makers
550	Consultants For Anesthesia & Management of PainGlendale · 5 sites	Parent on file	40	40	Decision makers

Showing 501 to 550 of 10,378 medical groups in California

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

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