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, 3,451 to 3,500
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
3451	Palm Springs UrologyPalm Springs · 2 sites	-	1	2	Decision makers
3452	Palmore Med Primary CareFresno · 1 site	-	1	2	Decision makers
3453	Panach MD (Kamaldeep Panach M.D., Inc.)Menifee · 2 sites	-	1	2	Decision makers
3454	Paramount Surgical Medical CenterParamount · 1 site	-	1	2	Decision makers
3455	Parra Medical ClinicSan Jose · 1 site	Parent on file	1	2	Decision makers
3456	Parvaneh Bahmani, MDLos Angeles · 1 site	Parent on file	1	2	Decision makers
3457	Peachwood Medical GroupClovis · 1 site	-	1	2	Decision makers
3458	Pearson Medical ClinicPorterville · 1 site	-	1	2	Decision makers
3459	Pen Hong Lee, MDMonterey Park · 1 site	-	1	2	Decision makers
3460	People Care Medical GroupRancho Cordova · 1 site	-	1	2	Decision makers
3461	Perris Valley Clinica Medica FamiliarPerris · 1 site	-	1	2	Decision makers
3462	Perris Valley Medical GroupPerris · 1 site	Parent on file	1	2	Decision makers
3463	Peter Alan Krause Medical CorporationSanta Maria · 1 site	-	1	2	Decision makers
3464	Peter Stoops, DO (Heritage Victor Valley Medical Group)Oak Hills · 1 site	Parent on file	1	2	Decision makers
3465	Phyto Heart CenterLos Angeles · 2 sites	-	1	2	Decision makers
3466	Plastic Surgery Associates of Orange CountyMission Viejo · 1 site	-	1	2	Decision makers
3467	Popular Medical ClinicSanta Ana · 1 site	-	1	2	Decision makers
3468	Pranit Shrestha, MDTorrance · 1 site	-	1	2	Decision makers
3469	Precision Wound CliniciansApple Valley · 1 site	-	1	2	Decision makers
3470	Premier Parth Medical Group, Inc.Apple Valley · 1 site	-	1	2	Decision makers
3471	Premier Senior Health IncLos Alamitos · 1 site	-	1	2	Decision makers
3472	Premier SurgicalBakersfield · 1 site	-	1	2	Decision makers
3473	Premier Wound Care of Southern CaliforniaColton · 1 site	-	1	2	Decision makers
3474	Premium Care ClinicCorona · 1 site	-	1	2	Decision makers
3475	Prestige Pulmonary ConsultantsMonterey Park · 1 site	-	1	2	Decision makers
3476	Prestige Pulmonary ConsultantsMonterey Park · 1 site	-	1	2	Decision makers
3477	Prestige Pulmonary ConsultantsMonterey Park · 1 site	-	1	2	Decision makers
3478	Prestige Pulmonary Consultants Inc.Monterey Park · 1 site	-	1	2	Decision makers
3479	Primary Care and IVLa Palma · 1 site	-	1	2	Decision makers
3480	Primary Health PartnersOceanside · 1 site	-	1	2	Decision makers
3481	Prime Care PhysiciansSherman Oaks · 1 site	-	1	2	Decision makers
3482	ProHealth Internal MedicineSherman Oaks · 1 site	-	1	2	Decision makers
3483	ProHealth Partners A Medical Group, Inc.Lakewood · 1 site	Parent on file	1	2	Decision makers
3484	Prosperite HealthPlacentia · 1 site	-	1	2	Decision makers
3485	Providence Palliative Care SonomaSanta Rosa · 2 sites	Parent on file	1	2	Decision makers
3486	PsychiatryOCNewport Beach · 1 site	-	1	2	Decision makers
3487	Pulmonary Medical CorporationTarzana · 1 site	-	1	2	Decision makers
3488	Pulmonary Medicine & Infectious Disease Medical GroupSan Diego · 1 site	Parent on file	1	2	Decision makers
3489	Pulmonary ProfessionalsTarzana · 1 site	-	1	2	Decision makers
3490	Raef M. Elsanadi, MDMission Viejo · 1 site	-	1	2	Decision makers
3491	Raincross Medical GroupRiverside · 1 site	-	1	2	Decision makers
3492	Rajneet K. Sekhon MD, Inc.Folsom · 2 sites	-	1	2	Decision makers
3493	Raksha Health IncSan Ramon · 1 site	-	1	2	Decision makers
3494	Ramin Mehdian, MDNewbury Park · 1 site	-	1	2	Decision makers
3495	Rancho Clinica Medica FamiliarOntario · 1 site	-	1	2	Decision makers
3496	Rancho Medical ClinicMoreno Valley · 2 sites	-	1	2	Decision makers
3497	Ranjana Saxena MD IncSan Leandro · 1 site	-	1	2	Decision makers
3498	Rapha APMCAnaheim · 1 site	-	1	2	Decision makers
3499	Redlands Surgical Associates (RSA Surgery)Redlands · 1 site	-	1	2	Decision makers
3500	Redlands-Yucaipa Medical GroupRedlands · 1 site	-	1	2	Decision makers

Showing 3,451 to 3,500 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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