| # | Company | Employees |
|---|---|---|
| 1 |
Kaiser Permanentehealthy.kaiserpermanente.org
Leading not-for-profit health plan with a unique business model driving industry improvements, serving millions of members across multiple states and impacting communities positively |
137,397 |
| 2 |
Dignity Healthcommonspirit.careers
Providing accessible, compassionate healthcare through numerous hospitals and care centers across California, Arizona, and Nevada, offering a range of medical services and specialties |
32,260 |
| 3 |
Sutter Healthsutterhealth.org
Not-for-profit healthcare system providing comprehensive, affordable care through hospitals, clinics, telehealth, and community partnerships across California. |
26,442 |
| 4 |
Molina Healthcaremolinahealthcare.com
Provides government-sponsored health care plans for families and individuals, contracting with states to offer Medicaid and Medicare services. |
17,919 |
| 5 |
UCLA Healthuclahealth.org
Comprehensive healthcare system with top-ranked hospitals, advanced medical technology, expert physicians, and pioneering biomedical research across multiple specialties. |
17,812 |
| 6 |
Cedars-Sinaicareers.cshs.org
Comprehensive healthcare provider excelling in patient care, pioneering research, advanced medical education, and community health improvement in Los Angeles. |
16,865 |
| 7 |
Adventist Healthadventisthealth.org
Faith-inspired nonprofit integrated health system in West Coast and Hawaii, providing care in various settings with a focus on whole-person healing |
16,088 |
| 8 |
Stanford Health Carestanfordhealthcare.org
Providing advanced, coordinated care in multiple specialties including cancer, neurosciences, cardiovascular, surgery, and organ transplant with innovative research and compassionate treatment. |
15,318 |
| 9 |
Caja Costarricense de Seguro Social (CCSS)ccss.sa.cr
A Costa Rican organization that provides comprehensive healthcare services and social protection to the population, as mandated by current legislation |
13,662 |
| 10 |
City of Hopecityofhope.org
Comprehensive cancer research, treatment, and innovation with a national network, focusing on breakthrough medicines and patient care integration. |
12,442 |
| 11 |
Scripps Healthcareers.scripps.org
Non-profit healthcare system providing acute hospitals, outpatient centers, home health, hospice, and advanced clinical research in San Diego. |
11,885 |
| 12 |
Sharp HealthCarecareers.sharp.com
Not-for-profit healthcare system offering acute, specialty hospitals, medical groups, and health plan with advanced, compassionate patient care services. |
11,594 |
| 13 |
UCSF Healthucsfhealth.org
Integrated health care network with top-ranked hospitals, specializing in innovative patient care, advanced technology, and pioneering research in various medical specialties |
11,461 |
| 14 |
UC San Diego Healthemployment.ucsd.edu
A leading academic health system in San Diego region, offering outstanding patient care, cutting-edge research, medical education, and community health programs |
10,962 |
| 15 |
VSP Visionvspvision.com
A global company dedicated to improving vision and providing healthcare solutions through innovative products, programs, and services, with a focus on diversity and charitable giving |
10,506 |
| 16 |
UC Davis Healthhealth.ucdavis.edu
Academic health system with top medical school, hospital, research centers, nursing school, and community partnerships advancing patient care and health innovation. |
9,647 |
| 17 |
Loma Linda University Medical Center Murrietallumcmurrieta.org
Healthcare provider in Murrieta, California offering state-of-the-art medical services, advanced technology, and high-touch care in a healing environment |
8,194 |
| 18 |
Home Care Assistancehomecareassistanceservices.com
Home Care Assistance provides comprehensive, concierge-based care for successful aging at home, prioritizing dignity, safety, and independence for clients |
8,042 |
| 19 |
Prime Healthcareprimehealthcare.com
Operates 51 hospitals and 360 outpatient locations across 14 states, delivering high-quality patient care with recognized safety and excellence. |
7,325 |
| 20 |
MemorialCarecareers.memorialcare.org
A leading nonprofit health system providing high-quality care in Orange County and Los Angeles County through hospitals, medical groups, and more |
6,956 |
| 21 |
Children's Hospital Los Angeles (CHLA)jobs.chla.org
Dedicated to providing high-quality, compassionate care to children, empowering staff to create special moments free from pain and suffering |
6,900 |
| 22 |
Homegoodshomegoods.com
A home-decor chain offering a wide range of furnishings, bedding, kitchenware, holiday items, and more for customers |
5,798 |
| 23 |
UCI Healthlinktr.ee
A leading healthcare provider in Orange County offering high-quality medical care through top physicians, surgeons, and clinical staff |
5,789 |
| 24 |
RadNetradnet.com
A leading provider of diagnostic imaging services with 370+ locations in core markets like California, offering services through a network of 9,000 employees |
5,667 |
| 25 |
Hoag Health Systemhoag.org
A non-profit healthcare network in Orange County, CA, offering specialized services in cancer, heart, neurosciences, women's health, and orthopedics |
5,547 |
| 26 |
Infinxinfinx.com
Innovative healthcare company offering scalable prior authorization and revenue cycle management solutions, using AI-driven software and billing specialists to optimize revenue capture |
5,195 |
| 27 |
Stanford Medicine Children's Healthstanfordchildrens.org
Largest Bay Area pediatric and obstetric health system providing comprehensive clinical services, including rare condition treatments and well-child care. |
5,172 |
| 28 |
Keck Medicine of USCkeckmedicine.org
Leading medical enterprise in Southern California, providing specialized care with world-class research, top-ranked hospitals, and over 100 clinics in the region |
5,099 |
| 29 |
PIH Healthpihhealth.org
A nonprofit healthcare network serving millions in Los Angeles, Orange County, and San Gabriel Valley with hospitals, medical offices, and specialized medical services |
5,065 |
| 30 |
Loma Linda University Medical Centerlluh.org
A leading medical center with over 900 beds, specialized in neonatal care, infant heart transplantation, proton treatments for cancer, and trauma care |
4,922 |
| 31 |
CHOC Children'schoc.org
Pediatric healthcare system with premier facilities, advanced programs, research, and training dedicated to children's health and recovery. |
4,876 |
| 32 |
Rady Children's Hospital-San Diegorchsd.org
Leading pediatric health care system with a 511-bed hospital, 40+ locations, and a focus on serving San Diego and surrounding counties Nonprofit organization relying on donations |
4,856 |
| 33 |
Vituityvituity.com
A physician-led multispecialty partnership providing care for millions of patients annually, with a focus on clinical excellence and workforce diversity |
4,238 |
| 34 |
John Muir Healthjohnmuirhealth.com
Not-for-profit healthcare organization providing primary, specialty, trauma, behavioral health, and collaborative patient-centered medical services in multiple California counties. |
4,207 |
| 35 |
Good Samaritan Hospital
A hospital that provides medical care, support, and compassion to the community, aimed at helping individuals in times of need |
4,005 |
| 36 |
Ensign Servicesensignservices.net
Providing skilled nursing and assisted living services for individuals in need of specialized care and support |
4,002 |
| 37 |
Santa Clara Valley Medical Centerscvh.org
A public healthcare provider in Santa Clara County offering quality care, research, teaching, and innovation while focusing on a positive patient experience |
3,547 |
| 38 |
Smile Brands Inc.smilebrands.com
Building a rewarding culture around happiness, leading to happier doctors, team members, and patients, resulting in high employee satisfaction and patient recommendations. |
3,525 |
| 39 |
One Medicalonemedical.com
Primary care provider team using technology and people-centered design to deliver affordable, accessible, and high-quality healthcare for better outcomes. |
3,341 |
| 40 |
El Camino Healthelcaminohealth.org
This company provides personalized healthcare at hospitals and clinics in Santa Clara County, offering advanced technology and nationally recognized medical specialties |
3,337 |
| 41 |
Ascension Wisconsinascension.org
Nonprofit Catholic health system operating hospitals and facilities in Wisconsin, providing compassionate, personalized care with focus on vulnerable populations. |
3,220 |
| 42 |
UC Davis Medical Centerucdavis.edu
A leading academic medical center with expertise in cancer, trauma care, neurodevelopmental disorders, and pediatric health, serving a large area through telemedicine |
3,060 |
| 43 |
Eisenhower Healthcareers.eisenhowerhealth.org
Award-winning medical facilities delivering high-quality, compassionate care with top rankings, safety, inclusivity, and a supportive work environment. |
2,887 |
| 44 |
Loma Linda University Healthlluh.org
A leading health system in Southern California with professional schools, hospitals, and faculty physicians providing education, research, and clinical care |
2,878 |
| 45 |
Palomar Healthpalomarhealth.org
Provider of comprehensive healthcare services in North San Diego County with two medical centers and over 900 affiliated providers, offering various medical specialties and recognized for excellence in multiple areas |
2,861 |
| 46 |
UCSF Benioff Children's Hospitalsucsfbenioffchildrens.org
A top-rated children's hospital with campuses in Oakland and San Francisco, providing care and support to families in Northern California |
2,850 |
| 47 |
St. Joseph Healthprovidence.org
Healthcare organization undergoing a transition to the Providence name Stay connected for workplace culture, caregiver stories, and hiring information |
2,747 |
| 48 |
Kaweah Healthkaweahhealth.org
A progressive healthcare provider in Central Valley offering a wide range of medical services, including cardiac, orthopedic, and surgical care |
2,698 |
| 49 |
AIDS Healthcare Foundationaidshealth.org
The company provides HIV/AIDS care, treatment, advocacy, and mass testing globally, regardless of ability to pay, saving lives through innovative programs |
2,675 |
| 50 |
Daughters of Charity Health Systemtriumphnewspapers.com
A regional health care system with six hospitals and two nursing colleges serving communities along the California coast |
2,643 |
| 51 |
California Department of State Hospitalsdsh.ca.gov
Manage California state hospitals providing mental health services, ensuring effective treatment in safe environments, meeting regulatory standards for care delivery |
2,636 |
| 52 |
Community Health Systemcommunityhealthsystem.org
Nonprofit health system with 11,000 employees, 2,500 affiliated physicians, serving Central Valley residents regardless of payment ability. |
2,624 |
| 53 |
Torrance Memorialtorrancememorial.org
A nonprofit medical center offering quality healthcare services with advanced technology, compassionate care, and recognition for nursing excellence |
2,610 |
| 54 |
Huntington Healthhuntingtonhealth.org
Affiliated with Cedars-Sinai, Huntington Health provides a wide range of healthcare services, including emergency care, surgery, cancer treatment, and maternity services |
2,581 |
| 55 |
Cottage Healthcottagehealth.org
A not-for-profit healthcare organization providing superior healthcare and improving community health through excellence, integrity, and compassion for over 125 years |
2,570 |
| 56 |
MemorialCare Long Beach Medical Centermemorialcare.org
A respected regional provider of medical and surgical services, consistently praised for quality care with state-of-the-art technology and a focus on patient safety |
2,514 |
| 57 |
The Permanente Medical Group, Inc.northerncalifornia.permanente.org
A California-based medical group located in Oakland, providing healthcare services through a network of physicians and medical professionals |
2,446 |
| 58 |
LA Health Servicesdhs.lacounty.gov
A leading municipal hospital system in Los Angeles County with a large budget, operating teaching hospitals, a rehabilitation hospital, and outpatient clinics |
2,445 |
| 59 |
St. Francis Medical Centerstfrancismedicalcenter.com
The company operates a hospital, health clinics, and trauma center in Los Angeles, providing a wide range of healthcare services and community initiatives |
2,342 |
| 60 |
Valley Children's Healthcarevalleychildrens.org
Central California's leading provider of specialized healthcare exclusively for children, offering comprehensive medical and surgical services, top-quality care, and pediatric training programs |
2,247 |
| 61 |
Amada Senior Careamadaseniorcare.com
Empowering pharma and medical device sales reps to start their own businesses in senior care, offering support, financial independence, and community impact |
2,177 |
| 62 |
Riverside University Health Systemruhealth.org
Riverside University Health System provides healthcare services, focusing on medical treatment, wellness initiatives, and community health education in Riverside, California |
2,133 |
| 63 |
San Francisco Department of Public Healthsf.gov
The company's mission is to protect and promote the health of all San Franciscans through comprehensive healthcare services and public health initiatives |
2,118 |
| 64 |
Western Dental & Orthodonticscareers-sonrava.icims.com
Provides accessible, affordable general and specialty dental care to over a million individuals annually across multiple states, including Medi-Cal beneficiaries. |
2,099 |
| 65 |
SCANthescangroup.org
A leading not-for-profit Medicare Advantage plan offering senior care services, community programs, education, and support for members, seniors, and caregivers |
2,098 |
| 66 | 2,054 | |
| 67 |
NorthBay Healthnorthbayhealthinfo.org
A nonprofit health care organization providing comprehensive services including hospitals, specialty care, cancer center, fitness center, and primary care facilities since 1960 |
1,991 |
| 68 |
MedImpact Healthcare Systems, Inc.medimpact.com
An independent pharmacy benefit manager focusing on promoting Lower Cost and Better Care through effective management of client pharmacy benefits |
1,973 |
| 69 |
Pomona Valley Hospital Medical Centerpvhmc.org
A nationally recognized not-for-profit hospital providing a wide range of specialized medical services, including oncology, cardiac care, women's services, and more |
1,919 |
| 70 |
L.A. Care Health Planlacare.org
provides health coverage plans for low-income communities in Los Angeles County, focusing on quality, access, and inclusion |
1,916 |
| 71 |
QTC Management, Inc.qtcm.com
Provider of disability and occupational health exams for Veterans and Service Members, offering automated processes and extensive employee benefits. |
1,914 |
| 72 |
Montage Healthmontagehealth.org
A nonprofit organization offering diverse healthcare services including preventive, restorative, palliative care, mental healthcare, and wellness programs with a shared vision of optimal health |
1,851 |
| 73 |
Arrowhead Regional Medical Centerarrowheadregional.org
A hospital in Colton, California, providing medical services to patients in the United States at 400 N Pepper Avenue |
1,830 |
| 74 |
Oakmont Senior Livingoakmontseniorliving.com
A leader in managing senior living communities, offering advancement opportunities, a close-knit community, and excellent care for seniors in California and Nevada |
1,825 |
| 75 |
MarinHealthmymarinhealth.org
Comprehensive healthcare provider in North Bay offering high-quality services from education to treatment, with award-winning hospital, medical network, and expert clinicians |
1,788 |
| 76 |
Always Best Care Senior Servicesalwaysbestcare.com
Providing non-medical in-home care and assisted living placement services since 1996, with a focus on exceptional care for seniors nationwide |
1,775 |
| 77 |
Included Healthincludedhealth.com
Integrated virtual care and navigation company breaking down barriers to provide high-quality healthcare for all, offering personalized care guidance and access |
1,732 |
| 78 |
Innovaccerinnovaccer.com
A leading data platform for value-based care, unifying patient data to improve clinical, financial, and operational outcomes for healthcare organizations |
1,731 |
| 79 |
California Correctional Health Care Servicescchcs.ca.gov
Provider of constitutionally appropriate healthcare in adult prisons in California, ensuring timely access to medical, dental, and mental health services through dedicated clinicians and support staff |
1,731 |
| 80 |
Host Healthcare, Inc.hosthealthcare.com
Travel healthcare staffing agency specializing in nursing, allied, and therapy jobs Award-winning team with top ratings and recognized as a top employer |
1,701 |
| 81 |
Harbor-UCLA Medical Centerdhs.lacounty.gov
A level one trauma center and academic teaching hospital serving over 700,000 residents in the South Bay area of Los Angeles County |
1,694 |
| 82 |
San Antonio Regional Hospitalsarh.org
A Not for Profit hospital in Upland, California with 363 beds, offering a wide range of healthcare services including nursing, laboratory, radiology, and rehabilitation |
1,627 |
| 83 |
FFF Enterprisesfffenterprises.com
Distributes specialty pharmaceuticals and biologics to healthcare systems, pharmacies, and alternate care sites. Provides infusion pharmacy services and inventory management programs. |
1,581 |
| 84 |
Saint Agnes Medical Centersamc.com
A leading 436-bed hospital in a Catholic healthcare system, providing high-quality, compassionate care with advanced medical technology and expert physicians |
1,566 |
| 85 |
Silveradosilverado.com
Providing memory care centers and hospice care nationwide, Silverado's founders prioritize the same high standard of care for all families |
1,516 |
| 86 |
Family Health Centers of San Diegofhcsd.org
Delivering comprehensive behavioral health and primary care services to diverse, underserved populations in San Diego County for over 50 years |
1,474 |
| 87 |
Corticacorticacare.com
Innovative healthcare company specializing in treating neurodevelopmental conditions by combining medical, therapeutic, and behavioral approaches for comprehensive care and family empowerment |
1,462 |
| 88 |
Sutter Health - Bay Areacliniciancareers.sutterhealth.org
A network of affiliated medical groups in the San Francisco Bay Area, recognized nationally for excellence in quality care and innovation |
1,448 |
| 89 |
Washington Hospital Healthcare Systemwashingtonhealth.com
A healthcare district providing patient services, research, and community programs through a 341-bed hospital, critical care pavilion, neuroscience institute, and various outpatient centers |
1,432 |
| 90 |
Antelope Valley Medical Centeravmc.org
A 420-bed acute care hospital serving nearly 1 million residents in Southern California, offering trauma, stroke, cancer, neonatal care, and more |
1,404 |
| 91 |
Tri-City Medical Centertricitymed.org
An acute-care hospital in Oceanside, offering advanced clinical services in 60 specialties, with a focus on robotics and minimally invasive technologies |
1,393 |
| 92 |
Doctor On Demandincludedhealth.com
Integrated virtual care and navigation to raise healthcare standards, providing high-quality, personalized care for all health needs and journey stages |
1,389 |
| 93 |
Salinas Valley Healthsalinasvalleyhealth.com
A healthcare system with a 266-bed hospital and specialized care services, offering compassionate and culturally sensitive patient care in the community |
1,363 |
| 94 |
Kern Medicalkernmedical.com
An academic teaching hospital offering a range of specialized medical services, training programs, and integrated outpatient clinics, focused on compassionate care |
1,357 |
| 95 |
Medelymedely.com
Medely is a healthcare labor marketplace connecting professionals with high-paying jobs and providing facilities with workforce management tools Join the team revolutionizing healthcare |
1,344 |
| 96 |
COMMUNITY REGIONAL MEDICAL CENTER-FRESNO
A hospital & health care facility located in Fresno, California, providing medical services to the community in the region |
1,322 |
| 97 |
Community Hospital of the Monterey Peninsulamontagehealth.org
Nonprofit healthcare provider offering a continuum of care from birth to end of life, serving the Monterey Peninsula and surrounding communities |
1,304 |
| 98 |
Advantmedadvantmed.com
A healthcare information management company offering solutions to optimize revenue and quality outcomes for health plans and Managed Care Organizations |
1,294 |
| 99 |
Zuckerberg San Francisco General Hospital and Trauma Centerzuckerbergsanfranciscogeneral.org
A San Francisco hospital offering inpatient, outpatient, emergency, diagnostic, and psychiatric services for adults and children |
1,293 |
| 100 |
Diversicare Healthcare Services, LLCdvcr.com
Provider of post-acute care in the Southeast and Midwest with 44 centers Focus on high-quality healthcare, service excellence, and fulfilling mission Visit website for more information |
1,264 |
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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 Oct 24, 2026.
More company lists in California
- The largest companies in California 12,813
- SaaS companies in California 1,617
- Software Development companies in California 1,386
- Venture capital and private equity firms in California 786
- IT Services and IT Consulting companies in California 730
- Venture Capital and Private Equity Principals companies in California 645
- AI companies in California 606
- AI-native companies in California 552
- Retail chains in California 527
- Financial Services companies in California 513
- Financial services firms in California 503
- Education providers in California 498
- IT services companies in California 428
- Manufacturers in California 417
- Technology, Information and Internet companies in California 413
- Higher Education companies in California 376
- Public sector organisations in California 337
- Hardware manufacturers in California 335
- Critical infrastructure operators in California 293
- Government Administration companies in California 279
- Healthcare providers in California 277
- Education Administration Programs companies in California 277
- Real Estate companies in California 275
- Food and Beverage Services companies in California 273
The same list elsewhere in United States
- Hospitals and Health Care companies in the United States 5,419
- Hospitals and Health Care companies in Texas 410
- Hospitals and Health Care companies in New York State 392
- Hospitals and Health Care companies in Florida 346
- Hospitals and Health Care companies in Illinois 274
- Hospitals and Health Care companies in Pennsylvania 238
- Hospitals and Health Care companies in Massachusetts 193
- Hospitals and Health Care companies in Tennessee 189
- Hospitals and Health Care companies in Ohio 180
- Hospitals and Health Care companies in North Carolina 156
- Hospitals and Health Care companies in New Jersey 143
- Hospitals and Health Care companies in Georgia 142
- Hospitals and Health Care companies in Michigan 142
- Hospitals and Health Care companies in Virginia 120
- Hospitals and Health Care companies in Missouri 118
- Hospitals and Health Care companies in Minnesota 117
- Hospitals and Health Care companies in Indiana 116
- Hospitals and Health Care companies in Maryland 113
- Hospitals and Health Care companies in Colorado 111
- Hospitals and Health Care companies in Arizona 105
- Hospitals and Health Care companies in Washington State 104
- Hospitals and Health Care companies in Wisconsin 94
- Hospitals and Health Care companies in New York 119
- Hospitals and Health Care companies in Chicago 96