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. Ammar Matloob, MDCorona, CA · No drug or device payments recorded (2025) ·
(951) 937-4343 Dr. Boris Shlopov, M.D., PH.D.Corona, CA · No drug or device payments recorded (2025) ·
(951) 737-4343 Dr. Calvin Marantz, M.D.Corona, CA · No drug or device payments recorded (2025) ·
(951) 736-6383 Dr. Mai Gu, MDCorona, CA · No drug or device payments recorded (2025) ·
(951) 808-8863 Dr. Nawar Matti, M.D.Corona, CA · No drug or device payments recorded (2025) ·
(951) 736-6383 Dr. Stephan Grigorian, M.D.Corona, CA · No drug or device payments recorded (2025) ·
(858) 877-0267 Dr. Mark Colombo, MDCorte Madera, CA · No drug or device payments recorded (2025) ·
(415) 924-2040 Dr. Ruben Gamez, M.D.Costa Mesa, CA · No drug or device payments recorded (2025) ·
(949) 771-8346 Dr. David Chun, MDCovina, CA · No drug or device payments recorded (2025) ·
(626) 915-6252 Dr. Kenneth Frankel, MDCovina, CA · No drug or device payments recorded (2025) ·
(626) 915-6252 Dr. Cyrus Oster, M.D.Culver City, CA · No drug or device payments recorded (2025) ·
(310) 532-4200 Dr. Kenneth Clark, M.D.Culver City, CA · No drug or device payments recorded (2025) ·
(310) 889-6080 Dr. Don Jacobs, M.D.Daly City, CA · No drug or device payments recorded (2025) ·
(650) 991-6587 Dr. Hava Liberman, M.D.Daly City, CA · No drug or device payments recorded (2025) ·
(650) 991-6585 Dr. Holly Dasghaib, MDDel Mar, CA · No drug or device payments recorded (2025) ·
(626) 695-2426 Dr. Gayle Lucas, M.D.Diamond Bar, CA · No drug or device payments recorded (2025) ·
(909) 612-4407 Dr. Allison Zemek, MDDowney, CA · No drug or device payments recorded (2025) ·
(562) 657-7500 Dr. Heshmat Cook, M.D.Downey, CA · No drug or device payments recorded (2025) ·
(562) 904-5000 Dr. Lindsay Zamis Dellamaggiora, M.D.Downey, CA · No drug or device payments recorded (2025) ·
(562) 904-5301 Dr. Abul Ala Syed Rifat Mannan, MDDuarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Christina Wei, M.D.Duarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Daniel Schmolze, M.D. Dr. David Cantu Duran, M.D.Duarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Dennis Weisenburger, M.D.Duarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Fang Fan, MD, PHDDuarte, CA · $2,190 in drug and device payments (2025) ·
(626) 256-4673 Dr. Fei Fei, M.D.Duarte, CA · No drug or device payments recorded (2025) ·
(800) 826-4673 Dr. Hui PanDuarte, CA · No drug or device payments recorded (2025) ·
(415) 601-9234 Dr. Javier Arias-stella, M.D.Duarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Jerry Wong, M.D.Duarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Jing Zhai, MD PHDDuarte, CA · No drug or device payments recorded (2025) ·
(626) 359-8111 Dr. Karen Chang, MDDuarte, CA · No drug or device payments recorded (2025) ·
(626) 359-8111 Dr. Leonidas Arvanitis, M.D.Duarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Maryam Ameri, MDDuarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Nina Rahimi, M.D.Duarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Parastou Tizro, M.D.Duarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Peiguo Chu, MDDuarte, CA · No drug or device payments recorded (2025) ·
(626) 359-8111 Dr. Qin Huang, MDDuarte, CA · No drug or device payments recorded (2025) ·
(626) 359-8111 Dr. Rania Bakkar, MDDuarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Rashmi Batra, M.D.Duarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Stanley Hamilton, M.D.Duarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Sun Wing Tong, M.D.Duarte, CA · No drug or device payments recorded (2025) ·
(347) 749-0423 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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