- Adventist Health
 - Beverly Hospital
- Montebello - A 212-bed nonprofit community hospital affiliated with the Southern California Health Care System.
- BHC Alhambra Hospital
- Rosemead - 85 bed, acute care facility serving as a resource for behavioural health and substance abuse treatment.
- California Hospital Medical Center (CHMC)
- Los Angeles - Includes information on medical and community services and programs. Provides an online health library.
- Cedars-Sinai Medical Center@
- Los Angeles
- Children's Hospital of Orange County
- Orange - Pediatric health care institution, provides inpatient/outpatient care, clinical services, emergency care, national research and educational programs.
- Childrens Hospital Los Angeles@
- Los Angeles
- Citrus Valley Medical Center
- Covina - Hospital serving the East San Gabriel Valley.
- Community Hospital of Gardena
- Gardena - Offering laser eye surgery, laser hair removal, bone density tests, mammography tests, and chronic pain relief.
- Community Medical Group
- Riverside - Multi-specialty group dedicated to providing medical, industrial and orthopaedic care to Riverside and surrounding areas.
- Community Memorial Hospital
- Ventura County - Online Heart Test determines your Cardiac Risk Factor within moments.
- Corona Regional Medical Center
- Corona
- Fountain Valley Regional Hospital and Medical Center
- Fountain Valley - Full-service acute care facility.
- Glendale Adventist Medical Center
- Glendale
- Glendale Memorial Hospital & Health Center
- Glendale - Nonprofit hospital, provides tertiary care and critical care.
- Global Care Medical Group
- Tarzana - Family practice and multispecialty managed care provider for all ages and cultures.
- Good Samaritan Hospital
- Los Angeles - Cardio-thoracic/coronary specialities and bloodless surgery.
- Harbor-UCLA Medical Center@
- Torrance
- Hoag Memorial Hospital Presbyterian
- Newport Beach - An acute care, nonprofit hospital County providing advanced medical programs in orthopaedics and neurology.
- Huntington Memorial Hospital
- Pasadena
- Inland Valley Regional Medical Center
- Wildomar - Providing inpatient, outpatient, emergency, and community health services.
- Irvine Multi-Specialty Surgical Care (IMSC)
- Irvine - Ambulatory surgery centre specializing in podiatry, pain management, orthopaedics, plastic surgery, infertility, and ob/gyn outpatient procedures.
- Irvine Regional Hospital and Medical Center
- Irvine
- Loma Linda University Medical Center@
- Long Beach Memorial Medical Center@
- Long Beach
- Los Robles Regional Medical Center@
- Thousand Oaks
- Methodist Hospital
- Arcadia - Provider of healthcare services to the central San Gabriel Valley.
- Mission Hospital
- Mission Viejo - Hospital in south Orange County that includes a trauma centre, heart centre, maternity centre, the Children's Hospital of Orange County (CHOC), and other services.
- Northern Inyo Hospital, Bishop, CA
- Bishop - Rural, acute care hospital offering a variety of medical services.
- Northridge Hospital Medical Center - Sherman Way Campus
- Van Nuys - Nonprofit, community-based organization that serves the San Fernando Valley.
- Orange Coast Memorial Medical Center@
- Fountain Valley
- Orthopaedic Hospital
- Los Angeles - Provides orthopaedic care in community environment.
- Pomona Valley Hospital Medical Center@
- Pomona
- Presbyterian Intercommunity Hospital
- Whittier - Includes information on employment, community health, charities, and more.
- Primary Critical Care Medical Group
- North Hollywood - Hospitalist medical group specializing in the care of inpatients.
- Redlands Community Hospital
- Redlands
- Riverside Community Hospital
- Riverside - Services include emergency/trauma, labour and delivery, cardiac care, orthopaedics, and transplant.
- Riverside County Regional Medical Center
- Moreno Valley - Includes pharmacy, trauma centre, heliport, specialty clinics, community clinics, and other services.
- Robert F. Kennedy Medical Center
- Hawthorne - Located in Centinela Valley and has been providing emergency, women, senior, and behavioural healthcare for over 75 years.
- Saint John's Health Center@
- Santa Monica
- San Antonio Community Hospital
- Upland - General information about the hospital and health related topics, a physician search, calendar of events and a health risk appraisal.
- San Clemente Hospital and Medical Center
- San Clemente - Acute care hospital. Site includes services, a list of physicians, and preadmittance form.
- San Gabriel Valley Medical Center
- San Gabriel
- Simi Valley Hospital
- Simi Valley
- South Coast Medical Center
- Laguna Beach
- Southern Sierra Medical Clinic
- Ridgecrest - Specializing in family health care, telemedicine, cardiology, and dermatology.
- St. Francis Medical Center
- Lynwood - Programs and services, community information, and more.
- St. John's Well Child Center
- Los Angeles - Includes safety and health tips and links.
- St. Joseph Hospital Nasal and Sinus Center
- Orange - Solves problems related to nasal and sinus disorders.
- St. Jude Medical Center
- Fullerton - Full-service hospital serving North Orange County and the surrounding communities.
- St. Mary Medical Center
- Long Beach - Offering detailed physician information, women's & men's services, family health programs, and older adult services.
- St. Vincent Medical Center
- Los Angeles - Specializing in heart disease, organ care and transplants as well as cancer treatment and general medicine.
- Torrance Memorial Medical Center
- Torrance - Locally governed community, nonprofit medical cente.
- UCI Medical Center
- Orange - Healthcare information, physician directory and job listings.
- University of California at Los Angeles Medical Center@
- Los Angeles
- USC University Hospital@
- Los Angeles
- USC/Norris Comprehensive Cancer Center
- Los Angeles
- Valley Presbyterian Hospital
- Van Nuys - Site features health and wellness programs, tips, and a calendar of events. Register online for seminars and classes.
- Verdugo Hills Hospital
- Glendale
- Verdugo Hills Medical Associates
- Glendale - Includes information on staff, services, and location.
- White Memorial Medical Center
- East Los Angeles
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