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Chemical Pathologists in California

Data updated monthly · Last refresh October 2026

5 Chemical Pathology providers practice in California. The largest concentration is in San Diego. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.

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San Diegotop city

Chemical Pathology by city in California

Choose a city to see providers there.

Chemical Pathology in San Diego3 providers
Chemical Pathology in San Francisco1 providers
Chemical Pathology in Los Angeles1 providers

Chemical Pathology providers in California

Listed by city, largest first. 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. Thomas Drake, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 794-8285
Dr. Amadeo Pesce, PHD
San Diego, CA · No drug or device payments recorded (2025) · (800) 635-6901
Dr. David Bailey, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6386
Dr. David Herold, M.D., PH.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 552-8585
Dr. Christine Nicoll, M.D.
San Francisco, CA · No drug or device payments recorded (2025) · (415) 750-2047

Common questions

How many Chemical Pathology providers are in California?

There are 5 Chemical Pathology providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Which cities in California have the most Chemical Pathology providers?

San Diego (3), San Francisco (1), Los Angeles (1) have the highest concentration of Chemical Pathology providers in California.

Where does this data come from?

Provider counts and profiles 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.

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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. Are you a Chemical Pathology in California? Get featured.