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, 251 to 300
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
251	East Valley Community Health CenterWest Covina · 9 sites	Parent on file	36	95	Decision makers
252	Imperial Valley Family Care Medical GroupImperial · 22 sites	-	36	86	Decision makers
253	Comprehensive Community Health CentersGlendale · 6 sites	Parent on file	36	82	Decision makers
254	Gracelight Community HealthLos Angeles · 7 sites	Parent on file	36	78	Decision makers
255	Northeast Community ClinicsAlhambra · 9 sites	Parent on file	36	77	Decision makers
256	Primary Medical GroupVentura · 14 sites	Parent on file	36	62	Decision makers
257	California Cancer Associates for Research and Excellence (cCARE)Fresno · 13 sites	-	36	58	Decision makers
258	Enloe Health & Wellness Primary CareChico · 6 sites	Parent on file	36	51	Decision makers
259	Pioneer Medical GroupBellflower · 7 sites	Parent on file	36	47	Decision makers
260	Paloma Medical GroupSan Juan Capistrano · 6 sites	-	36	37	Decision makers
261	Bloomington Community Health CenterBloomington · 8 sites	Parent on file	35	96	Decision makers
262	Saban Community ClinicLos Angeles · 5 sites	Parent on file	35	78	Decision makers
263	Marque Urgent CareNewport Beach · 10 sites	Parent on file	35	72	Decision makers
264	Bakersfield Family Medical GroupBakersfield · 6 sites	Parent on file	35	63	Decision makers
265	Caduceus Medical GroupYorba Linda · 7 sites	-	35	61	Decision makers
266	The Nephrology Group, Inc.Fresno · 9 sites	-	35	60	Decision makers
267	Asian Pacific Health Care VentureLos Angeles · 5 sites	Parent on file	35	58	Decision makers
268	Serra Medical GroupSun Valley · 3 sites	-	35	58	Decision makers
269	Inpatient Consultants of CaliforniaBerkeley · 12 sites	-	35	45	Decision makers
270	Premier Valley Medical GroupBakersfield · 10 sites	-	34	60	Decision makers
271	Jaspreet Somal M.D., A.P.C.San Diego · 3 sites	-	34	36	Decision makers
272	North Pacific Cardiology MedicalArcata · 4 sites	-	34	35	Decision makers
273	CHA Hollywood Presbyterian Medical CenterLos Angeles · 3 sites	Parent on file	33	40	Decision makers
274	Pacific Cardiovascular Associates (PCA) Medical GroupCosta Mesa · 7 sites	-	33	39	Decision makers
275	Newport Diagnostic CenterNewport Beach · 4 sites	Parent on file	33	36	Decision makers
276	In-Patient Medical GroupEncinitas · 7 sites	Parent on file	32	49	Decision makers
277	East Bay Nephrology Medical GroupBerkeley · 7 sites	-	31	46	Decision makers
278	Corona Hospitalist Medical Group, Inc.Corona · 3 sites	-	31	41	Decision makers
279	SoCal HospitalistsNewport Coast · 2 sites	-	31	32	Decision makers
280	Lumira HealthcareLivingston · 15 sites	Parent on file	30	84	Decision makers
281	One MedicalSan Francisco · 45 sites	Parent on file	30	81	Decision makers
282	Peach Tree HealthMarysville · 17 sites	Parent on file	30	75	Decision makers
283	Riverside Community HospitalRiverside · 3 sites	Parent on file	30	40	Decision makers
284	Life Medical PractitionersSan Diego · 3 sites	-	30	31	Decision makers
285	ONclick HealthcareWestlake Village · 25 sites	Parent on file	29	110	Decision makers
286	Western Sierra Medical ClinicGrass Valley · 10 sites	Parent on file	29	101	Decision makers
287	Axis Community HealthPleasanton · 4 sites	Parent on file	29	62	Decision makers
288	T.H.E. (To Help Everyone) Health and Wellness CentersLos Angeles · 5 sites	Parent on file	29	54	Decision makers
289	Modoc Medical Center (MMC)Alturas · 5 sites	Parent on file	29	52	Decision makers
290	Taylor Farms Family Health & Wellness CenterGonzales · 9 sites	Parent on file	29	43	Decision makers
291	Hospitalist Corporation of Inland EmpirePomona · 6 sites	Parent on file	29	40	Decision makers
292	Wound MD PCPetaluma · 20 sites	-	29	37	Decision makers
293	Foothill Cardiology Medical GroupPasadena · 6 sites	-	28	46	Decision makers
294	Friends of Family Health CenterLa Habra · 7 sites	Parent on file	28	45	Decision makers
295	Valley Health TeamSan Joaquin · 16 sites	Parent on file	27	53	Decision makers
296	Horizon Multicare GroupLancaster · 6 sites	-	27	35	Decision makers
297	Santo Niño Health CenterPanorama City · 5 sites	Parent on file	27	34	Decision makers
298	Foothill Pulmonary and Critical Care Consultants Medical Group, Inc.Pasadena · 4 sites	-	27	32	Decision makers
299	Little Company Hospitalist Medical GroupEl Segundo · 2 sites	Parent on file	27	28	Decision makers
300	Farallon Inpatient Medical GroupLakeport · 2 sites	-	27	27	Decision makers

Showing 251 to 300 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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