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, 1,201 to 1,250
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
1201	Clarkian MedicalDaly City · 1 site	-	12	18	Decision makers
1202	Head & Neck Associates of Orange CountyMission Viejo · 5 sites	-	12	18	Decision makers
1203	Modena Allergy + AsthmaLa Jolla · 7 sites	Parent on file	12	18	Decision makers
1204	Associated Pathology Medical GroupLos Gatos · 4 sites	Parent on file	12	17	Decision makers
1205	DLR Family Medicine Medical GroupSan Clemente · 3 sites	-	12	17	Decision makers
1206	East Bay Center for Digestive HealthOakland · 1 site	-	12	17	Decision makers
1207	Progressive Anesthesia Consultants of CaliforniaLakeport · 3 sites	-	12	17	Decision makers
1208	West Coast Pulmonary & Sleep Disorders CenterOxnard · 3 sites	-	12	17	Decision makers
1209	Camellia Women's HealthCarmichael · 4 sites	-	12	16	Decision makers
1210	Garfield Anesthesia Medical GroupAlhambra · 5 sites	Parent on file	12	16	Decision makers
1211	Medical Imaging Center of Southern CaliforniaSanta Monica · 4 sites	Parent on file	12	16	Decision makers
1212	Cancer Therapy Medical GroupAlamo · 4 sites	Parent on file	12	15	Decision makers
1213	Renal Consultants Medical GroupNewhall · 5 sites	-	12	15	Decision makers
1214	Southern California GI & Liver CentersCoronado · 3 sites	-	12	15	Decision makers
1215	A Center for VisionCareBurbank · 3 sites	-	12	14	Decision makers
1216	Comprehensive Cardiovascular SpecialistsAlhambra · 5 sites	-	12	14	Decision makers
1217	Pacific Oaks Medical GroupBeverly Hills · 2 sites	-	12	14	Decision makers
1218	B&B Medical GroupBellflower · 1 site	-	12	13	Decision makers
1219	Cardiology Specialists Medical GroupRiverside · 8 sites	-	12	13	Decision makers
1220	Delta Comprehensive Medical TeamStockton · 2 sites	Parent on file	12	13	Decision makers
1221	IGO Medical GroupSan Diego · 1 site	-	12	13	Decision makers
1222	Montage Orthopedics and Sports MedicineMonterey · 2 sites	Parent on file	12	13	Decision makers
1223	Regeneration PsychiatryRedondo Beach · 3 sites	-	12	13	Decision makers
1224	San Antonio Regional HospitalUpland · 2 sites	Parent on file	12	13	Decision makers
1225	Advanced Surgical AssociatesSan Jose · 1 site	-	12	12	Decision makers
1226	Centinela Radiology Medical GroupInglewood · 2 sites	-	12	12	Decision makers
1227	Century Anesthesia Medical GroupTorrance · 2 sites	Parent on file	12	12	Decision makers
1228	Diablo Pulmonary Medical GroupConcord · 2 sites	-	12	12	Decision makers
1229	GenieMD Medical GroupPleasanton · 5 sites	-	12	12	Decision makers
1230	Institute of Trauma and Acute Care (ITAC)Pomona · 2 sites	-	12	12	Decision makers
1231	Intensive Care Medical Group, INCNorthridge · 1 site	Parent on file	12	12	Decision makers
1232	Marin Medical LaboratoriesNovato · 6 sites	Parent on file	12	12	Decision makers
1233	North County Trauma AssociatesEscondido · 2 sites	Parent on file	12	12	Decision makers
1234	Oxnard Camarillo Anesthesiology Medical GroupCamarillo · 3 sites	Parent on file	12	12	Decision makers
1235	Southbay Critical CareTorrance · 3 sites	-	12	12	Decision makers
1236	KCS Health CenterAnaheim · 5 sites	Parent on file	11	42	Decision makers
1237	Empire Anesthesia IncSan Ramon · 11 sites	-	11	37	Decision makers
1238	AFC Urgent Care of Santa ClaritaSanta Clarita · 2 sites	Parent on file	11	36	Decision makers
1239	Berman Skin InstituteLos Altos · 11 sites	Parent on file	11	35	Decision makers
1240	Tri-City Mental Health AuthorityPomona · 2 sites	Parent on file	11	35	Decision makers
1241	Health Atlast West LALos Angeles · 3 sites	Parent on file	11	34	Decision makers
1242	Wound DocsAliso Viejo · 1 site	-	11	34	Decision makers
1243	Rolling Hills ClinicRed Bluff · 7 sites	Parent on file	11	32	Decision makers
1244	Circle MedicalSan Francisco · 6 sites	Parent on file	11	29	Decision makers
1245	Harbor Community Health CentersSan Pedro · 2 sites	Parent on file	11	29	Decision makers
1246	Round Valley Indian Health CenterCovelo · 1 site	Parent on file	11	28	Decision makers
1247	Western Institute of Critical Care MedicineIrvine · 5 sites	-	11	28	Decision makers
1248	Adventist Health Clear LakeClearlake · 2 sites	Parent on file	11	27	Decision makers
1249	Central Valley Emergency MedicinePorterville · 1 site	-	11	27	Decision makers
1250	One MedicalSan Francisco · 9 sites	Parent on file	11	26	Decision makers

Showing 1,201 to 1,250 of 10,378 medical groups in California

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

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