Updated October 2026

Largest primary care groups in California

Medical group directory
California
Primary care

Groups: 3,969
Internal Medicine groups: 1,835
Family Medicine groups: 1,169
Internal medicine specialists: 22,438
Family physicians: 4,605

There are 3,969 primary care groups in California with a Medicare PAC ID: 1,835 internal medicine, 1,169 family medicine, 619 nurse practitioner, 207 physician assistant and 138 general practice. The Permanente Medical Group, Inc. is the largest internal medicine group, with 3,018 internal medicine specialists, and MemorialCare Medical Group the largest family medicine group, with 247 family physicians.

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The Permanente Medical Group, Inc. is the largest primary care 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. 119 California groups have 100 or more physicians.

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Primary care groups in California, ranked by physicians, 3,151 to 3,200
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
3151	Carmichael Medical ClinicCarmichael · 1 site	-	1	2	Decision makers
3152	Carrillo Medical GroupDaly City · 1 site	-	1	2	Decision makers
3153	Cedars Tower Medical GroupLos Angeles · 1 site	-	1	2	Decision makers
3154	Center for Endocrinology, Diabetes and Metabolic DisordersNewhall · 2 sites	Parent on file	1	2	Decision makers
3155	Central Coast Comprehensive Cardiovascular ImagingSanta Maria · 1 site	Parent on file	1	2	Decision makers
3156	Central Coast Endocrinology & DiabetesSanta Maria · 1 site	-	1	2	Decision makers
3157	Central Valley Hip and KneeTurlock · 1 site	-	1	2	Decision makers
3158	Central Valley Medical GroupBakersfield · 2 sites	-	1	2	Decision makers
3159	Centro Medico Del CarmenEscondido · 2 sites	-	1	2	Decision makers
3160	Century Wellness CenterLos Angeles · 1 site	-	1	2	Decision makers
3161	Cerritos Medical CenterCerritos · 1 site	-	1	2	Decision makers
3162	Cesar Palana MDLos Angeles · 1 site	-	1	2	Decision makers
3163	Chaewon Song MD INCGarden Grove · 1 site	Parent on file	1	2	Decision makers
3164	Chorbajian Medical CorpBurbank · 1 site	-	1	2	Decision makers
3165	Christopher Kassar DOSan Dimas · 1 site	-	1	2	Decision makers
3166	Christopher N Do, MDSan Jose · 1 site	-	1	2	Decision makers
3167	City Medical Clinic GroupLos Angeles · 1 site	Parent on file	1	2	Decision makers
3168	Claremont Medical CenterClaremont · 1 site	-	1	2	Decision makers
3169	Classic Urgent CareSanger · 1 site	-	1	2	Decision makers
3170	Claudio Zawitkowski, MD Inc.San Diego · 1 site	-	1	2	Decision makers
3171	Clinica Medica FamiliarCorona · 1 site	-	1	2	Decision makers
3172	Clinica Medica FamiliarPerris · 1 site	-	1	2	Decision makers
3173	Clinica Medica FamiliarCorona · 1 site	-	1	2	Decision makers
3174	Clinica Medica LatinaMoreno Valley · 1 site	-	1	2	Decision makers
3175	Clinica Medica Nuestra SenoraPasadena · 1 site	-	1	2	Decision makers
3176	Clinica Medica PacoimaPacoima · 1 site	-	1	2	Decision makers
3177	Clinique MolièreBrea · 1 site	-	1	2	Decision makers
3178	Coachella Valley CareLa Quinta · 2 sites	Parent on file	1	2	Decision makers
3179	Coalinga Valley Health ClinicsCoalinga · 2 sites	-	1	2	Decision makers
3180	Coastal SurgeonsCarlsbad · 1 site	-	1	2	Decision makers
3181	ComCare Primary Medical GroupGlendale · 1 site	-	1	2	Decision makers
3182	Community Access ClinicNational City · 1 site	-	1	2	Decision makers
3183	Community Pain ManagementEl Centro · 1 site	-	1	2	Decision makers
3184	Complete Care Community Health Center (CCCHC)Los Angeles · 1 site	Parent on file	1	2	Decision makers
3185	Complete Care Health SolutionsLong Beach · 1 site	-	1	2	Decision makers
3186	Comprehensive Hematology Oncology CentersGlendale · 1 site	-	1	2	Decision makers
3187	Comprehensive Pulmonary and Critical Care AssociatesBakersfield · 1 site	-	1	2	Decision makers
3188	Cong T. Phan M.D., Inc.Rancho Cucamonga · 1 site	-	1	2	Decision makers
3189	Contemporary Family PracticeHanford · 1 site	-	1	2	Decision makers
3190	Cooper DermatologySonora · 1 site	Parent on file	1	2	Decision makers
3191	Coral ClinicsSanta Monica · 1 site	-	1	2	Decision makers
3192	Core CardiologyMurrieta · 1 site	-	1	2	Decision makers
3193	Corona Family CareCorona · 2 sites	-	1	2	Decision makers
3194	Cottage Urology Clinic (formerly Urology Specialists of Santa Barbara)Santa Barbara · 2 sites	Parent on file	1	2	Decision makers
3195	Crenshaw Family Medical GroupGardena · 1 site	-	1	2	Decision makers
3196	Cricket HealthSan Francisco · 1 site	Parent on file	1	2	Decision makers
3197	Crossroads In HealthNewbury Park · 1 site	-	1	2	Decision makers
3198	Curall Medical & Mobile Group, Inc.Montclair · 1 site	-	1	2	Decision makers
3199	Cyrus Damirchi MD INCSan Bernardino · 1 site	Parent on file	1	2	Decision makers
3200	Daniel C Choo Cardiovascular Medical CorporationHacienda Heights · 1 site	-	1	2	Decision makers

Showing 3,151 to 3,200 of 3,969 primary care groups in California

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

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