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Doctors in Lancaster, California

Data updated monthly · Last refresh September 2026

436 licensed providers practice in Lancaster across 75 specialties, and 28% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

436providers

75specialties

28%with industry payments

Specialties in Lancaster

Internal Medicine in Lancaster (54) · 30% received drug or device payments
Family Medicine in Lancaster (40) · 30% received drug or device payments
Chiropractor in Lancaster (33) · 0% received drug or device payments
Pediatrics in Lancaster (28) · 25% received drug or device payments
Emergency Medicine in Lancaster (26) · 4% received drug or device payments
Anesthesiology in Lancaster (23)
Registered Dietitian in Lancaster (19)
Psychiatry in Lancaster (14)
Obstetrics & Gynecology in Lancaster (14)
Gastroenterology in Lancaster (13)
Surgery in Lancaster (12)
Diagnostic Radiology in Lancaster (12)
Nephrology in Lancaster (11)
Orthopaedic Surgery in Lancaster (8)
Hematology & Oncology in Lancaster (7)
Ophthalmology in Lancaster (7)
Neurology in Lancaster (7)
Hospitalist in Lancaster (7)
Physical Medicine & Rehabilitation in Lancaster (6)
Urology in Lancaster (5)
Surgical Oncology in Lancaster (4)
Acupuncturist in Lancaster (4)
Geriatric Medicine (Internal Medicine) in Lancaster (4)
Radiation Oncology in Lancaster (3)
Cardiovascular Disease in Lancaster (3)
Otolaryngology/Facial Plastic Surgery in Lancaster (3)
Occupational Medicine in Lancaster (3)
Dermatology in Lancaster (3)
Neurological Surgery in Lancaster (3)
Anatomic Pathology & Clinical Pathology in Lancaster (3)
Nutritionist in Lancaster (2)
Otolaryngology in Lancaster (2)
Infectious Disease in Lancaster (2)
Allergy & Immunology in Lancaster (2)
General Practice in Lancaster (2)
Sports Physician Chiropractor in Lancaster (2)
Neonatal-Perinatal Medicine in Lancaster (2)
Pulmonary Disease in Lancaster (2)
Orthopedic Chiropractor in Lancaster (2)
Adult Medicine in Lancaster (2)
Nuclear Medicine in Lancaster (2)
Rheumatology in Lancaster (2)
Diagnostic Ultrasound in Lancaster (1)
Hospice and Palliative Medicine (Emergency Medicine) in Lancaster (1)
Trauma Surgery in Lancaster (1)
Urogynecology and Reconstructive Pelvic Surgery (Urology) in Lancaster (1)
Gynecology in Lancaster (1)
Plastic Surgery in Lancaster (1)
Pediatric Hematology & Oncology in Lancaster (1)
Hospice and Palliative Medicine (Family Medicine) in Lancaster (1)
Pediatric Radiology in Lancaster (1)
Occupational Health Chiropractor in Lancaster (1)
Adult Reconstructive Orthopaedic Surgery in Lancaster (1)
Vascular & Interventional Radiology in Lancaster (1)
Neuromusculoskeletal Medicine & OMM in Lancaster (1)
Nutrition Education Nutritionist in Lancaster (1)
Retina Specialist (Ophthalmology) in Lancaster (1)
Pediatric Infectious Diseases in Lancaster (1)
Colon & Rectal Surgery in Lancaster (1)
Interventional Cardiology in Lancaster (1)
Plastic and Reconstructive Surgery in Lancaster (1)
Glaucoma Specialist (Ophthalmology) in Lancaster (1)
Rehabilitation Chiropractor in Lancaster (1)
Orthopaedic Trauma in Lancaster (1)
Obstetrics in Lancaster (1)
Pain Medicine (Anesthesiology) in Lancaster (1)
Allergy in Lancaster (1)
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Lancaster (1)
Pain Medicine (Physical Medicine & Rehabilitation) in Lancaster (1)
Endocrinology, Diabetes & Metabolism in Lancaster (1)
Nutrition Chiropractor in Lancaster (1)
Maternal & Fetal Medicine in Lancaster (1)
Vascular Surgery in Lancaster (1)
Geriatric Medicine (Family Medicine) in Lancaster (1)
Pediatric Adolescent Medicine in Lancaster (1)

Common questions

How many doctors practice in Lancaster, California?

436 licensed providers with active NPI records list a practice address in Lancaster, according to federal NPPES data refreshed monthly.

How many doctors in Lancaster received drug or device company payments?

122 of 436 providers in Lancaster (28%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

Where does this data come from?

Provider records come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

Other cities in California

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Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory.