Emergency Medicine in Pleasanton, California
Data updated monthly · Last refresh September 2026
27 Emergency Medicine providers practice in Pleasanton, and 15% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.
Emergency Medicine providers in Pleasanton
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. Alan Ly, DOPleasanton, CA · No drug or device payments recorded (2025) ·
(415) 990-3017 Dr. Andreas Tjoe, M.D.Pleasanton, CA · No drug or device payments recorded (2025) ·
(925) 416-6585 Dr. Candice Mcneil, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(800) 617-7717 Dr. Christopher Severson, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Colleen Johnson, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Cynthia Penn-duecker, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Dennis Alfaro, M.D.Pleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Douglas Yoshida, MDPleasanton, CA · $225 in drug and device payments (2025) ·
(209) 342-2300 Dr. Dyke Edwards, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(925) 847-5000 Dr. Edward Kan, MDPleasanton, CA · $225 in drug and device payments (2025) ·
(209) 342-2300 Dr. Gerald Nazareno, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Helen Tam, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Herschel Fischer, M.D.Pleasanton, CA · No drug or device payments recorded (2025) ·
(925) 846-6685 Dr. Howard Yoshioka, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. James Burgess, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(925) 847-5000 Dr. Jeremy EstradaPleasanton, CA · $255 in drug and device payments (2025) ·
(925) 416-6585 Dr. Letitia Li, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(844) 301-0805 Dr. Michael Costello, MDPleasanton, CA · $55,090 in drug and device payments (2025) ·
(209) 342-2300 Dr. Nicholas Prewitt, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(844) 301-0805 Dr. Paul Chasin, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Richard Carvolth, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(925) 924-1600 Dr. Robert Kwak, M.D.Pleasanton, CA · No drug or device payments recorded (2025) ·
(650) 799-6666 Dr. Robert MandibergPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Scott Seidman, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Stephanie Nguyen, DOPleasanton, CA · No drug or device payments recorded (2025) ·
(925) 847-3000 Dr. Tony Shiu, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Yen-hua Yu, D.O.Pleasanton, CA · No drug or device payments recorded (2025) ·
(925) 416-6585 Common questions
How many Emergency Medicine providers are in Pleasanton, California?There are 27 Emergency Medicine providers with active NPI records practicing in Pleasanton, according to federal NPPES data refreshed monthly.
How many Emergency Medicine providers in Pleasanton received drug or device company payments?4 of 27 (15%) 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 Pleasanton Emergency Medicine across California
