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, 901 to 950
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
901	Pomona Valley Imaging Medical GroupPomona · 17 sites	Parent on file	19	20	Decision makers
902	Salinas Valley RadiologistsSalinas · 9 sites	Parent on file	19	20	Decision makers
903	Tower UrologyLos Angeles · 2 sites	-	19	20	Decision makers
904	Anesthesia Medical Group of Santa BarbaraSanta Barbara · 3 sites	-	19	19	Decision makers
905	Compassionate Critical CareWoodland Hills · 1 site	Parent on file	19	19	Decision makers
906	Glendora Radiological AssociatesCovina · 3 sites	-	19	19	Decision makers
907	Jason L Hwang MD IncSonora · 52 sites	-	19	19	Decision makers
908	North County Radiology AssociatesEscondido · 4 sites	Parent on file	19	19	Decision makers
909	Silver Creek RadiologySan Jose · 12 sites	Parent on file	19	19	Decision makers
910	South Coast RadiologyLaguna Hills · 4 sites	Parent on file	19	19	Decision makers
911	West Coast AnesthesiaIrvine · 3 sites	-	19	19	Decision makers
912	AACI (Asian Americans for Community Involvement)San Jose · 3 sites	Parent on file	18	74	Decision makers
913	Sacramento Community ClinicSacramento · 7 sites	Parent on file	18	60	Decision makers
914	Inland Empire Anesthesia Medical Group, Inc.Colton · 1 site	-	18	49	Decision makers
915	NVISION Eye CentersNewport Beach · 13 sites	Parent on file	18	49	Decision makers
916	Island DermatologyNewport Beach · 8 sites	Parent on file	18	44	Decision makers
917	Los Angeles Orthopedic Surgery SpecialistsLos Angeles · 5 sites	-	18	43	Decision makers
918	Golden State Orthopedics & SpineLos Gatos · 4 sites	-	18	35	Decision makers
919	Capital OB/GYNSacramento · 3 sites	-	18	30	Decision makers
920	OC Surgeons (South Orange County Surgical)Laguna Hills · 5 sites	-	18	29	Decision makers
921	Allergy & Asthma Medical Group of the Bay AreaWalnut Creek · 6 sites	-	18	25	Decision makers
922	Cardiovascular Institute of San DiegoChula Vista · 4 sites	-	18	25	Decision makers
923	SharpCare Medical GroupCoronado · 7 sites	Parent on file	18	25	Decision makers
924	Paloma Medical GroupSan Juan Capistrano · 4 sites	-	18	24	Decision makers
925	Caduceus Medical GroupYorba Linda · 3 sites	-	18	23	Decision makers
926	Elevate Emergency MedicineBig Bear Lake · 2 sites	Parent on file	18	23	Decision makers
927	Michael Bain MDNewport Beach · 6 sites	-	18	23	Decision makers
928	Urologic InstituteApple Valley · 7 sites	-	18	23	Decision makers
929	Alameda Inpatient Medical, Inc.Alameda · 2 sites	Parent on file	18	22	Decision makers
930	AnesthesiaWorksEl Segundo · 4 sites	Parent on file	18	21	Decision makers
931	California Kidney SpecialistsSan Dimas · 7 sites	-	18	21	Decision makers
932	Allure Medical GroupNewbury Park · 3 sites	-	18	20	Decision makers
933	Cancer & Blood Specialty ClinicLos Alamitos · 10 sites	-	18	20	Decision makers
934	Heart And Vascular Centers of AmericaSan Diego · 5 sites	-	18	20	Decision makers
935	PathMD LabsDuarte · 1 site	Parent on file	18	20	Decision makers
936	ProHealth Advanced ImagingNorth Hollywood · 5 sites	Parent on file	18	20	Decision makers
937	Mission Surgical ClinicRiverside · 4 sites	-	18	19	Decision makers
938	Scripps Clinic Medical GroupLa Jolla · 4 sites	Parent on file	18	19	Decision makers
939	Southern California Pulmonary Lung CenterGlendale · 3 sites	-	18	19	Decision makers
940	Century Anesthesia Medical GroupEncino · 4 sites	Parent on file	18	18	Decision makers
941	Motherlode Diagnostic Imaging Medical Group, Inc.Jackson · 3 sites	-	18	18	Decision makers
942	Peninsula PathologistsSouth San Francisco · 9 sites	-	18	18	Decision makers
943	SV Hospitalist Medical GroupSonoma · 2 sites	-	18	18	Decision makers
944	United Hospitalist IncRancho Cucamonga · 2 sites	-	18	18	Decision makers
945	Whittier Pulmonary & Critical Care Medical GroupWhittier · 4 sites	Parent on file	18	18	Decision makers
946	Wishon Radiological Medical GroupFresno · 6 sites	Parent on file	18	18	Decision makers
947	Tip Top AnesthesiaBeverly Hills · 13 sites	Parent on file	17	82	Decision makers
948	Marin County Behavioral Health and Recovery Services (BHRS)San Rafael · 10 sites	Parent on file	17	63	Decision makers
949	Shasta Orthopaedics & Sports MedicineRedding · 4 sites	-	17	52	Decision makers
950	Excelle Anesthesia ServicesBakersfield · 6 sites	Parent on file	17	50	Decision makers

Showing 901 to 950 of 10,378 medical groups in California

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

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