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Emergency Medicine in Palo Alto, California

Data updated monthly · Last refresh September 2026

56 Emergency Medicine providers practice in Palo Alto, and 14% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Emergency Medicine providers in Palo Alto

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. Timothy Peck, M.D.
Palo Alto, CA · No drug or device payments recorded (2025) · (617) 317-8913
Dr. Tonia Fox, MD
Palo Alto, CA · No drug or device payments recorded (2025) · (650) 493-5000
Dr. Victor Sadauskas
Palo Alto, CA · No drug or device payments recorded (2025) · (650) 724-0853
Dr. William Johnston, M.D.
Palo Alto, CA · $43 in drug and device payments (2025) · (650) 493-5000
Dr. Yanika Wolfe, MD
Palo Alto, CA · $222 in drug and device payments (2025) · (610) 406-7176
Dr. Zina Semenovskaya, MD
Palo Alto, CA · No drug or device payments recorded (2025) · Telehealth · (718) 836-6600

Common questions

How many Emergency Medicine providers are in Palo Alto, California?

There are 56 Emergency Medicine providers with active NPI records practicing in Palo Alto, according to federal NPPES data refreshed monthly.

How many Emergency Medicine providers in Palo Alto received drug or device company payments?

8 of 56 (14%) 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.

All specialties in Palo Alto Emergency Medicine across California

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.