HealthcareDiscovery.AI / Doctors / California / Upland / Surgery

Surgery in Upland, California

Data updated monthly · Last refresh September 2026

9 Surgery providers practice in Upland. Listings are drawn from federal public records and are not endorsements.

Surgery providers in Upland

Listed alphabetically. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Adam Sugihara, M.D.
Upland, CA · $50 in drug and device payments (2025) · (909) 870-3033
Dr. Bryce Beseth, M.D.
Upland, CA · $297 in drug and device payments (2025) · (909) 920-0525
Dr. Donald Alpiner, DO
Upland, CA · $50 in drug and device payments (2025) · (909) 239-1621
Dr. Donna Dudziak, M.D.
Upland, CA · No drug or device payments recorded (2025) · (909) 946-6221
Dr. Irene Houari, MD
Upland, CA · No drug or device payments recorded (2025) · (909) 946-6221
Dr. Kenneth Baik, MD
Upland, CA · No drug or device payments recorded (2025) · (909) 920-3753
Dr. Louis Watson, MD
Upland, CA · No drug or device payments recorded (2025) · (909) 931-1800
Dr. Nabil Koudsi, MD
Upland, CA · No drug or device payments recorded (2025) · (909) 981-3411
Dr. Stanley Saul, D.O.
Upland, CA · No drug or device payments recorded (2025) · (909) 985-2112

Common questions

How many Surgery providers are in Upland, California?

There are 9 Surgery providers with active NPI records practicing in Upland, according to federal NPPES data refreshed monthly.

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.

All specialties in Upland Surgery across California

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
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.