50 leading Medical Practices companies in California (2026 list)

These California-based medical practices range from large, established healthcare systems to specialized clinics. Companies like Sutter Health - Palo Alto Medical Foundation provide comprehensive care across Northern California, while Sharp Rees-Stealy Medical Group offers primary and specialty services in San Diego. LaserAway specializes in aesthetic dermatology, and Landmark Health delivers in-home medical care for adults with chronic illnesses. SkinSpirit focuses on medical aesthetics, and The Oncology Institute provides advanced oncology care. Most of these organizations are well-established, with many founded before 2000.

A notable pattern among these companies is their diverse geographic distribution across California, from Southern California cities like San Diego, Beverly Hills, and Huntington Beach, to Northern California locations such as Palo Alto and Emeryville. This indicates a broad presence of medical practices throughout the state, catering to various healthcare needs across different regions.

#	Company	Industry	Headquarters	Employees	Founded
1	Sutter Health - Palo Alto Medical Foundation jobs.sutterhealthclinicians.org A not-for-profit healthcare organization providing operational support and advanced technology for physicians to deliver exceptional patient care in Northern California	Medical Practices	🇺🇸 Mountain View	4,394	1930
2	LaserAway laseraway.com Aesthetic dermatology leader offering state-of-the-art treatments for skin rejuvenation, hair removal, body contouring, and injectables with a focus on professional growth and flexibility	Medical Practices	🇺🇸 Beverly Hills	1,624	2006
3	Landmark Health business.optum.com Mobile provider group bringing medical care to homes of adults with chronic illnesses, helping reach health goals, reducing hospital stays, admissions, mortality rates, and costs	Medical Practices	🇺🇸 Huntington Beach	821	2013
4	Sharp Rees-Stealy Medical Group sharp.com A leading medical group in San Diego County with 19 locations offering primary, specialty care, therapy, radiology, pharmacy, and urgent care services since 1923	Medical Practices	🇺🇸 San Diego	820	1923
5	Sansum Clinic sutterhealth.org A non-profit organization in Santa Barbara County with 250 physicians providing a full range of healthcare services to over 150,000 patients yearly	Medical Practices	🇺🇸 Santa Barbara	769	1921
6	SHARP MEMORIAL HOSPITAL A medical practice company located in San Diego, California, specializing in providing healthcare services at Sharp Memorial Hospital	Medical Practices	🇺🇸 San Diego	768	1955
7	SkinSpirit skinspirit.com A premier destination for medical aesthetics and skincare, providing safe and effective treatments with highly trained experts for optimal results	Medical Practices	🇺🇸 Palo Alto	656	2003
8	Riverside Medical Clinic riversidemedicalclinic.com Providing comprehensive multi-specialty medical services in Riverside region, focusing on qualitatively excellent, accessible, and affordable healthcare for individuals, businesses, and industries	Medical Practices	🇺🇸 Riverside	652	1935
9	CEP America vituity.com A leading acute care expert formed from the unification of subsidiaries, focused on transforming acute care and improving patient lives	Medical Practices	🇺🇸 Emeryville	560	1975
10	Los Alamitos Medical Center ucihealth.org A healthcare provider in Orange County offering high-quality care through top physicians, surgeons, and clinical staff, now a part of UCI Health	Medical Practices	🇺🇸 Los Alamitos	526	n/a
11	SAN Providing top-notch healthcare services to the community without regard to socioeconomic status is our primary goal at SAN	Medical Practices	🇺🇸 Chula Vista	506	1982
12	Northeast Valley Health Corporation nevhc.org A nonprofit community health center in Los Angeles County providing quality healthcare to medically underserved residents with sensitivity to diverse needs	Medical Practices	🇺🇸 San Fernando	502	1973
13	The Oncology Institute theoncologyinstitute.com Advanced oncology care provider offering evidence-based treatment, clinical trials, and specialized care in a community setting, impacting over 17 million patients	Medical Practices	🇺🇸 Cerritos	493	2007
14	St. Jude Medical Center providence.org A highly esteemed non-profit hospital in Southern California known for its advanced technology and exceptional care services	Medical Practices	🇺🇸 Fullerton	478	1957
15	SAN FRANCISCO VA MEDICAL CENTER A medical practice company located in Suisun City, California, providing services at the SAN FRANCISCO VA MEDICAL CENTER in United States	Medical Practices	🇺🇸 Suisun City	472	n/a
16	Alta Bates Summit Medical Center, Inc.sutterhealth.org A not-for-profit hospital in Oakland and Berkeley, part of the Sutter Health network, providing healthcare services to patients	Medical Practices	🇺🇸 Berkeley	463	1936
17	Prenuvo prenuvo.com A health tech company specializing in whole body MRI screening for early detection of cancer and other diseases using cutting-edge technology and AI analysis	Medical Practices	🇺🇸 Redwood City	462	n/a
18	Hoag Medical Group hoagmedicalgroup.com Healthcare organization offering a wide range of specialties, personalized care, same-day appointments, convenient locations, and acceptance of various insurance plans	Medical Practices	🇺🇸 Newport Beach	453	2012
19	Olive View - UCLA Medical Center uclaoliveview.org Training compassionate physicians in internal medicine, our residency program emphasizes clinical excellence and serving the underserved population in Los Angeles County	Medical Practices	🇺🇸 Sylmar	442	1987
20	USC Verdugo Hills Hospital keckmedicine.org Providing personalized healthcare in Southern California, USC Verdugo Hills Hospital is affiliated with USC and part of Keck Medicine of USC	Medical Practices	🇺🇸 Glendale	429	1947
21	NVISION Eye Centers nvisioncenters.com Leader in LASIK and cataract surgery across the US, offering top technology and experienced surgeons for the best patient experience in eye care	Medical Practices	🇺🇸 Aliso Viejo	428	1999
22	Wesley Health Centers - JWCH Institute, Inc.jwchinstitute.org A leading healthcare provider in Los Angeles, offering comprehensive services to underserved populations including the homeless, regardless of ability to pay	Medical Practices	🇺🇸 Los Angeles	418	1960
23	Santa Barbara Cottage Hospital A medical practice company located in Santa Barbara, California, providing healthcare services at 400 W PUEBLO ST	Medical Practices	🇺🇸 Santa Barbara	413	1888
24	Asian Health Services asianhealthservices.org Healthcare organization providing comprehensive services in multiple languages, including medical, dental, mental health, nutrition, and advocacy for diverse communities regardless of status	Medical Practices	🇺🇸 Oakland	402	1974
25	BASS Medical Group bassmedicalgroup.com Physician-owned and patient-centered organization providing high quality, cost-effective healthcare services with a focus on community-based independent physician practices in California	Medical Practices	🇺🇸 Walnut Creek	400	2006
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26	Open Door Community Health Centers opendoorhealth.com A FQHC system in Humboldt and Del Norte counties providing quality healthcare to all, recognized as a National Quality Leader	Medical Practices	🇺🇸 Arcata	374	1971
27	The Center for Connection thecenterforconnection.org A medical practice company based in Pasadena, CA, focused on enhancing human connection and well-being through personalized healthcare services	Medical Practices	🇺🇸 Pasadena	352	n/a
28	CALIFORNIA DEPARTMENT OF CORRECTION/ REHABILITATION A medical practice company located in Tehachapi, California, specializing in correctional and rehabilitation services for individuals involved with the criminal justice system	Medical Practices	🇺🇸 Tehachapi	348	n/a
29	MAINTENANCE maintenancela.com Helping individuals maintain their desired appearance through personalized maintenance plans post-treatment or surgery, promoting aging gracefully with specialized services	Medical Practices	🇺🇸 Beverly Hills	332	2017
30	Radiology Associates rasloimaging.com Radiology Associates provides advanced diagnostic imaging services on the Central Coast, offering fast and effective care with state-of-the-art technology and compassionate staff	Medical Practices	🇺🇸 Atascadero	332	1959
31	Spine & Sport Physical Therapy spineandsport.com Empowering individuals to reach their full potential through personalized physical therapy treatments focusing on pain management, mobility, function, and wellness	Medical Practices	🇺🇸 San Diego	328	n/a
32	Access Health myaccesshealth.com Access Health offers primary and urgent healthcare services in the Bay Area, including treatment for chronic conditions, physical exams, vaccinations, and urgent care for injuries and illnesses	Medical Practices	🇺🇸 San Mateo	327	2010
33	CALIFORNIA DEPARTMENT OF CORRECTIONS A medical practice company located in Clovis, California, specializing in corrections-related healthcare services	Medical Practices	🇺🇸 Clovis	327	n/a
34	BUENA PARK SCHOOL DISTRICT bpsd.k12.ca.us A school district in Buena Park, CA, providing education to students from Kindergarten to 8th grade	Medical Practices	🇺🇸 West Sacramento	255	n/a
35	Northern Valley Indian Health nvih.org Provider of health services for American Indians and the general public in various counties through medical, dental, and behavioral health clinics	Medical Practices	🇺🇸 Willows	222	1971
36	NakedMD nakedmd.com Personalized beauty treatments as an art form, enhancing natural beauty for confident, radiant skin Empowering individuals to feel their best	Medical Practices	🇺🇸 Newport Beach	196	2022
37	HRC Fertility Management havingbabies.com A Managed Services Organization in the fertility industry providing administrative services to medical practices, including clinics, labs, genetics lab, and surgery centers	Medical Practices	🇺🇸 Pasadena	185	1988
38	Unio Health Partners uniohp.com A multi-specialty physician practice management company focused on urology, gastroenterology, and radiation oncology offering management services and supporting ancillary service lines	Medical Practices	🇺🇸 Southern California	184	2021
39	Medical Board Of California mbc.ca.gov State agency in California that licenses and disciplines physicians and healthcare professionals, provides public information on licensed physicians, and investigates complaints	Medical Practices	🇺🇸 Sacramento	176	1876
40	Mercy Medical Group dignityhealth.org Mercy Medical Group focuses on ensuring the happiness, health, and well-being of individuals through comprehensive medical care and services	Medical Practices	🇺🇸 Sacramento	172	2004
41	MCHC Health Centers mchcinc.org Community-based healthcare provider offering medical, dental, and behavioral care in Mendocino and Lake Counties, dedicated to providing high-quality healthcare for all	Medical Practices	🇺🇸 Ukiah	167	1992
42	Rancho Physical Therapy ranchopt.com A Medicare certified group offering physical, occupational, hand, cardiopulmonary, and speech therapies with a focus on home exercises and patient education	Medical Practices	🇺🇸 Lake Elsinore	165	1984
43	Children's Dental FunZone!childrensdentalfunzone.com Pediatric dental practice in Southern California focused on providing a fun and positive experience for children while promoting good oral health	Medical Practices	🇺🇸 West Covina	162	2002
44	El Proyecto del Barrio, Inc.elproyecto.us A nonprofit organization in Arleta, CA providing health and human services to underserved communities in the United States	Medical Practices	🇺🇸 Arleta	161	1971
45	VA HOSPITAL LOMA LINDA A medical practice located in Hemet, California offering services at the VA Hospital Loma Linda	Medical Practices	🇺🇸 Hemet	158	n/a
46	LONG BEACH MEMORIAL MEDICAL CENTER/MEMORIAL CHILDREN'S HOSPITAL A medical practice company located in Long Beach, California, specializing in providing services at Long Beach Memorial Medical Center and Memorial Children's Hospital	Medical Practices	🇺🇸 Long Beach	157	n/a
47	Sierra Pacific Orthopedics spoc-ortho.com The company specializes in various areas of orthopedic medicine, including sports medicine, hand and upper extremity care, and nonoperative pain management	Medical Practices	🇺🇸 Fresno	155	2002
48	Retinal Consultants Medical Group, Inc.retinalmd.com Specializing in diagnosing and treating diseases of the retina and vitreous, this Northern California group has multiple Retina Centers serving various cities	Medical Practices	🇺🇸 Sacramento	153	1977
49	Coury & Buehler Physical Therapy cbphysicaltherapy.com Dedicated to providing high quality physical therapy care, focusing on relieving pain, retraining movement, restoring function, and empowering patients through education	Medical Practices	🇺🇸 Brea	148	2004
50	Agile Physical Therapy, Inc.agilept.com Private outpatient physical therapy centers in California, offering sport rehabilitation and employer-based care Emphasis on professional advancement, evidence-based practice, and career-long learning	Medical Practices	🇺🇸 Palo Alto	146	2002

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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 13, 2026.

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50 leading Medical Practices companies in California

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