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, 6,851 to 6,900
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
6851	Loc Dac Bui, M.D.Westminster · 1 site	-	1	2	Decision makers
6852	Loida V. Guevarra, M.D., Inc.Victorville · 1 site	-	1	2	Decision makers
6853	Loma Linda Cardiology Medical GroupLos Angeles · 2 sites	-	1	2	Decision makers
6854	Lomita Family Medical GroupSan Diego · 1 site	Parent on file	1	2	Decision makers
6855	Long P Dang, MDWestminster · 1 site	-	1	2	Decision makers
6856	Los Alamitos HemodialysisLos Alamitos · 1 site	Parent on file	1	2	Decision makers
6857	Los Angeles BrainSanta Monica · 1 site	-	1	2	Decision makers
6858	Los Angeles Gastroenterology ClinicSanta Monica · 1 site	-	1	2	Decision makers
6859	Los Angeles Gastroenterology GroupLos Angeles · 2 sites	-	1	2	Decision makers
6860	LT Duong, MDSanta Ana · 2 sites	-	1	2	Decision makers
6861	Lucidity Sleep PsychiatryVista · 1 site	-	1	2	Decision makers
6862	Luis M Blando MD IncCarson · 1 site	-	1	2	Decision makers
6863	Luis Mario Marquez, MD, Inc.San Diego · 2 sites	Parent on file	1	2	Decision makers
6864	Luminary MDMission Viejo · 1 site	-	1	2	Decision makers
6865	LUMNS CaliforniaRancho Cucamonga · 2 sites	-	1	2	Decision makers
6866	Lux YouLong Beach · 1 site	-	1	2	Decision makers
6867	Maguire & Early OrthopedicsSanta Barbara · 1 site	-	1	2	Decision makers
6868	Maher A. A. Azer, Md, Inc.Los Alamitos · 1 site	Parent on file	1	2	Decision makers
6869	Makam MedicalAnaheim · 1 site	-	1	2	Decision makers
6870	Malaygiri Aparnath, Pulmonology & Critical Care MedicineFountain Valley · 1 site	-	1	2	Decision makers
6871	Malwa DoctorsGranite Bay · 1 site	-	1	2	Decision makers
6872	Manchester Urgent CareLos Angeles · 1 site	Parent on file	1	2	Decision makers
6873	Mann & Jones Medical GroupLong Beach · 1 site	Parent on file	1	2	Decision makers
6874	Manteca Urgent CareManteca · 2 sites	Parent on file	1	2	Decision makers
6875	Margaret Greenough, MDSan Luis Obispo · 2 sites	-	1	2	Decision makers
6876	Maria Geraldina Fuentes, MDChula Vista · 1 site	Parent on file	1	2	Decision makers
6877	Marin Pacific Medical GroupLos Angeles · 1 site	-	1	2	Decision makers
6878	Marina Kovalevsky, MDLos Angeles · 1 site	-	1	2	Decision makers
6879	Mark A Ward MD IncMorro Bay · 1 site	-	1	2	Decision makers
6880	Mark Barats, MDWest Hollywood · 1 site	-	1	2	Decision makers
6881	Masami Hattori, MDSan Francisco · 1 site	Parent on file	1	2	Decision makers
6882	McCray DermatologyValencia · 3 sites	-	1	2	Decision makers
6883	McLean Medical Group IncNorth Hollywood · 1 site	-	1	2	Decision makers
6884	MD Care ProvidersHemet · 1 site	-	1	2	Decision makers
6885	ME Medical GroupMoreno Valley · 1 site	-	1	2	Decision makers
6886	Med Center Medical ClinicCarmichael · 2 sites	-	1	2	Decision makers
6887	Medex Medical GroupSan Gabriel · 1 site	Parent on file	1	2	Decision makers
6888	Medi Mobile & Wound CareAgoura Hills · 1 site	-	1	2	Decision makers
6889	Medical Associates of BakersfieldBakersfield · 1 site	-	1	2	Decision makers
6890	Medlink Health ServicesLos Angeles · 1 site	-	1	2	Decision makers
6891	Medtriq Treatment ServicesDanville · 1 site	-	1	2	Decision makers
6892	Medxcel Medical GroupBurbank · 1 site	-	1	2	Decision makers
6893	Mehrdad Kevin Ariani, MDNorthridge · 1 site	Parent on file	1	2	Decision makers
6894	MemorialCare Medical GroupLong Beach · 1 site	Parent on file	1	2	Decision makers
6895	Mendocino Laboratory AssociatesUkiah · 1 site	-	1	2	Decision makers
6896	Mensa Family Clinic IncGlendale · 1 site	-	1	2	Decision makers
6897	Mental Health HookupValencia · 1 site	-	1	2	Decision makers
6898	Merced Gastroenterology Medical OfficeMerced · 1 site	-	1	2	Decision makers
6899	Metamedicine IncSan Diego · 1 site	-	1	2	Decision makers
6900	Metropolitan Comprehensive Medical CenterSan Diego · 1 site	-	1	2	Decision makers

Showing 6,851 to 6,900 of 10,378 medical groups in California

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

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