HealthcareDiscovery.AI / Doctors / California / Rancho Cucamonga

Doctors in Rancho Cucamonga, California

Data updated monthly · Last refresh September 2026

311 licensed providers practice in Rancho Cucamonga across 61 specialties, and 37% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

311providers
61specialties
37%with industry payments

Specialties in Rancho Cucamonga

Common questions

How many doctors practice in Rancho Cucamonga, California?

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

How many doctors in Rancho Cucamonga received drug or device company payments?

115 of 311 providers in Rancho Cucamonga (37%) 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

All California specialties Ask Zach for help choosing

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.