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, 951 to 1,000
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
951	South County Crisis Response Program (Gail Steele Wellness and Recovery Center)Hayward · 13 sites	Parent on file	17	49	Decision makers
952	Share OurselvesCosta Mesa · 8 sites	Parent on file	17	47	Decision makers
953	Orthopaedic Specialists of North CountyOceanside · 3 sites	Parent on file	17	45	Decision makers
954	Sonoma County Indian Health Project, Inc.Santa Rosa · 2 sites	Parent on file	17	42	Decision makers
955	Clinica Medica FamiliarCorona · 6 sites	-	17	40	Decision makers
956	Allied Pain & Spine InstituteSan Jose · 5 sites	-	17	36	Decision makers
957	Ava Health PartnersWhittier · 12 sites	-	17	36	Decision makers
958	Spectrum Emergency Physicians GroupAnaheim · 5 sites	-	17	36	Decision makers
959	California Pacific OrthopaedicsSan Francisco · 2 sites	-	17	35	Decision makers
960	Olympic Anesthesia PartnershipBeverly Hills · 4 sites	-	17	35	Decision makers
961	Cardinal Emergency Providers Professional CorporationRedding · 4 sites	-	17	31	Decision makers
962	Fogg Remington EyeCareFresno · 6 sites	-	17	31	Decision makers
963	Pathways to Wellness Medication ClinicPleasanton · 5 sites	-	17	30	Decision makers
964	Eye Medical Center of FresnoFresno · 2 sites	-	17	29	Decision makers
965	Monterey Bay GI Consultants Medical GroupMonterey · 3 sites	-	17	28	Decision makers
966	Pacific Shores Medical GroupLong Beach · 9 sites	Parent on file	17	28	Decision makers
967	Luskin Orthopaedic Institute for ChildrenLos Angeles · 2 sites	Parent on file	17	27	Decision makers
968	Orchard HospitalGridley · 2 sites	Parent on file	17	27	Decision makers
969	The Oncology Institute of Hope and InnovationCerritos · 11 sites	Parent on file	17	27	Decision makers
970	Dao Medical GroupGarden Grove · 1 site	-	17	26	Decision makers
971	Emergency Medical Associates (EMA)Redding · 2 sites	Parent on file	17	26	Decision makers
972	CEP AmericaModesto · 112 sites	Parent on file	17	25	Decision makers
973	NeuroSpine InstitutePalmdale · 2 sites	-	17	24	Decision makers
974	Synergy Cardiothoracic (CT) Surgery PartnershipUpland · 3 sites	-	17	24	Decision makers
975	American Eye AssociatesChula Vista · 8 sites	-	17	23	Decision makers
976	CareMore Medical GroupCerritos · 13 sites	Parent on file	17	22	Decision makers
977	Merced Intensivist GroupMerced · 2 sites	-	17	21	Decision makers
978	Integrity Wound Physicians Inc.Modesto · 1 site	-	17	19	Decision makers
979	Providence Saint John's Health CenterSanta Monica · 4 sites	Parent on file	17	19	Decision makers
980	CCU IntensivistsLancaster · 3 sites	Parent on file	17	18	Decision makers
981	CoCoPath (Contra Costa Pathology Associates)Walnut Creek · 7 sites	Parent on file	17	18	Decision makers
982	United Inpatient ConsultantsSimi Valley · 1 site	-	17	18	Decision makers
983	OC Emergency PhysiciansTustin · 2 sites	-	17	17	Decision makers
984	Proton Doctors PCSan Diego · 4 sites	-	17	17	Decision makers
985	Los Angeles LGBT CenterLos Angeles · 3 sites	Parent on file	16	119	Decision makers
986	Del Sur HealthcareEl Cajon · 3 sites	-	16	78	Decision makers
987	Los Angeles Center for Ear, Nose, Throat and AllergyLos Angeles · 14 sites	-	16	56	Decision makers
988	Mend Urgent CareSherman Oaks · 5 sites	Parent on file	16	56	Decision makers
989	All For Health, Health For AllGlendale · 13 sites	Parent on file	16	52	Decision makers
990	Family Care Centers - IrvineIrvine · 4 sites	Parent on file	16	41	Decision makers
991	Clínica Médica FamiliarCorona · 6 sites	-	16	34	Decision makers
992	UCI Health, Fountain Valley Emergency DepartmentFountain Valley · 6 sites	Parent on file	16	34	Decision makers
993	Imperial Valley Rural Health ClinicBrawley · 4 sites	-	16	31	Decision makers
994	The Neuron ClinicTemecula · 8 sites	-	16	30	Decision makers
995	Jovive PsychiatryEmeryville · 7 sites	Parent on file	16	27	Decision makers
996	Gill Obstetrics & Gynecology Medical Group, Inc.Lodi · 3 sites	-	16	26	Decision makers
997	John C. Fremont Healthcare DistrictMariposa · 4 sites	Parent on file	16	26	Decision makers
998	USC Care Medical GroupLos Angeles · 6 sites	Parent on file	16	23	Decision makers
999	Anacapa Surgical AssociatesVentura · 4 sites	Parent on file	16	21	Decision makers
1000	Premier Orthopaedic & Trauma SpecialistsVictorville · 3 sites	-	16	21	Decision makers

Showing 951 to 1,000 of 10,378 medical groups in California

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

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