Pathologists (Anatomic & Clinical) in California
Data updated monthly · Last refresh October 2026
1,553 Anatomic Pathology & Clinical Pathology providers practice in California, including 5 (0%) offering telehealth. The largest concentration is in Los Angeles. 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.
1,553providers
5telehealth
Los Angelestop city
Anatomic Pathology & Clinical Pathology by city in California
Choose a city to see providers there.
Anatomic Pathology & Clinical 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. Carlos Munoz Zuluaga, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-7043 Dr. Charles Zaloudek, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-1633 Dr. Cheryl Mather, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 514-8214 Dr. Christine Miller, MD PHDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-2292 Dr. Constance Chen, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 476-1000 Dr. Dean Fong, DOSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 833-4188 Dr. Dianna Ng, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-7359 Dr. Enrique Terrazas, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-1375 Dr. Frederick Baehner, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-1163 Dr. Fredric Mendes, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 759-1979 Dr. Georgios Deftereos, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-7043 Dr. Gerald Schall, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-6339 Dr. Gillian Hale, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-7359 Dr. Grant EilersSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 476-1000 Dr. Hannah Lee, DOSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 476-1000 Dr. Helen Bailey, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-1343 Dr. Henry Sanchez, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 514-2068 Dr. Ian Jaffee, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(559) 455-4000 Dr. James Mathews, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 833-3870 Dr. Jason Yang, M.D., PH.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 345-8836 Dr. Jean Olson, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 476-2727 Dr. Jonee Taylor, MDSan Francisco, CA · $24 in drug and device payments (2025) ·
(415) 353-7359 Dr. Judith Doyle, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 600-2200 Dr. Judy MelinekSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 850-7056 Dr. Karthik Ganapathi, MD, PHDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 476-1000 Dr. Katharine BradySan Francisco, CA · $24 in drug and device payments (2025) ·
(415) 353-1672 Dr. Kent Truong, MDSan Francisco, CA · $62 in drug and device payments (2025) ·
(415) 476-9000 Dr. Kimberley Evason, MD, PHDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-7359 Dr. Kunwar Singh, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-1613 Dr. Laura Brown, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-1667 Dr. Linda Ferrell, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-1633 Dr. Lucy HanSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 600-2200 Dr. Luke Perkocha, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 885-7254 Dr. Mamatha Chivukula, MDSan Francisco, CA · $454 in drug and device payments (2025) ·
(415) 353-1613 Dr. Maria Serrano, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 833-4188 Dr. Marilda Chung, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-6338 Dr. Marta Margeta, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 476-5236 Dr. Michael Deftos, M.D.,PH.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 504-7422 Dr. Michael Nystrom, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 244-8459 Dr. Nafis Shafizadeh, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-1613 Dr. Nancy Ciau, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 206-8216 Dr. Neslihan Kayraklioglu, MD, PHDSan Francisco, CA · $19 in drug and device payments (2025) ·
(415) 353-7359 Dr. Nicholas Ladwig, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-7331 Dr. Nicholas Lau, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 476-1000 Dr. Poonam VohraSan Francisco, CA · No drug or device payments recorded (2025) ·
(628) 206-8230 Dr. Rafael Cisneros, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 476-1000 Dr. Rageshree RamachandranSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-1613 Dr. Rebecca Spies, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-1614 Dr. Roderick Snow, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(510) 964-0458 Dr. Ronald Balassanian, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 514-6642 Common questions
How many Anatomic Pathology & Clinical Pathology providers are in California?There are 1,553 Anatomic Pathology & Clinical Pathology providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Anatomic Pathology & Clinical Pathology providers in California offer telehealth?Yes. 5 of the 1,553 Anatomic Pathology & Clinical Pathology providers in California (about 0%) report offering telehealth services in CMS data.
Which cities in California have the most Anatomic Pathology & Clinical Pathology providers?Los Angeles (206), Stanford (115), San Diego (107) have the highest concentration of Anatomic Pathology & Clinical Pathology providers in California.
How many Anatomic Pathology & Clinical Pathology providers in California received drug or device company payments?313 of 1,553 Anatomic Pathology & Clinical Pathology providers in California (20%) 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 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.
Do most Pathologists (Anatomic & Clinical) in California work in independent practices or large health systems?Among 840 Pathologists (Anatomic & Clinical) in California enrolled in Medicare, 25% bill through a solo or small practice with fewer than 10 clinicians, 27% through a mid-size group of 10 to 99, and 48% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Pathologists (Anatomic & Clinical) in California work at?According to CMS facility affiliation records, the California hospitals where the most Pathologists (Anatomic & Clinical) hold privileges are Stanford Health Care in Stanford; Stanford Health Care Tri-Valley in Pleasanton; Cedars-Sinai Medical Center in Los Angeles.
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