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. David ZlotnickPleasant Hill, CA · No drug or device payments recorded (2025) ·
(925) 270-3575 Dr. Javi Hartenstine, D.O.Pleasanton, CA · No drug or device payments recorded (2025) ·
(925) 847-3000 Dr. Khaingsoe Win, M.D.Pleasanton, CA · No drug or device payments recorded (2025) ·
(925) 416-3404 Dr. Robert Luo, M.D.Pleasanton, CA · No drug or device payments recorded (2025) ·
(925) 730-8200 Dr. Catherine Chang-suen, D.O. Dr. David Nasca, M.D.Pomona, CA · No drug or device payments recorded (2025) ·
(949) 643-3345 Dr. Hao Nguyen, MDPomona, CA · No drug or device payments recorded (2025) ·
(909) 595-1221 Dr. Philip Strassle, MDPomona, CA · No drug or device payments recorded (2025) ·
(909) 357-9484 Dr. Victor Santiago, MDPomona, CA · No drug or device payments recorded (2025) ·
(909) 865-9500 Dr. Debra Hanks, MDPorterville, CA · No drug or device payments recorded (2025) ·
(559) 781-5174 Dr. Yao Schmidt, M.D.Porterville, CA · No drug or device payments recorded (2025) ·
(559) 781-5174 Dr. Adam StellingRancho Dominguez, CA · No drug or device payments recorded (2025) ·
(310) 225-3244 Dr. Alessandro De Vito, M.D.Rancho Dominguez, CA · $27 in drug and device payments (2025) ·
(310) 225-3244 Dr. Christopher Ake, D.O.Rancho Dominguez, CA · No drug or device payments recorded (2025) ·
(310) 225-3221 Dr. Daniel Real, MDRancho Dominguez, CA · No drug or device payments recorded (2025) ·
(310) 225-3244 Dr. Eric Glassy, M.D.Rancho Dominguez, CA · $7,692 in drug and device payments (2025) ·
(310) 225-3244 Dr. Georgia Tunstill, M.D.Rancho Dominguez, CA · No drug or device payments recorded (2025) ·
(310) 225-3244 Dr. Jeffrey Virgin, M.D., PH.D.Rancho Dominguez, CA · No drug or device payments recorded (2025) ·
(310) 225-3244 Dr. Jennifer O'dell, MDRancho Dominguez, CA · $379 in drug and device payments (2025) ·
(310) 225-3244 Dr. Miriam Velazquez, DORancho Dominguez, CA · No drug or device payments recorded (2025) ·
(310) 225-3221 Dr. Nicholas Harding-jackson, MDRancho Dominguez, CA · No drug or device payments recorded (2025) ·
(310) 225-3244 Dr. Nicolas Gallegos, M.D.Rancho Dominguez, CA · No drug or device payments recorded (2025) ·
(310) 225-3244 Dr. Rasam Hajiannasab, MDRancho Dominguez, CA · No drug or device payments recorded (2025) ·
(310) 225-3221 Dr. Sanja Krajisnik, MDRancho Dominguez, CA · No drug or device payments recorded (2025) ·
(310) 225-3244 Dr. Stacy Arnold, M.D.Rancho Dominguez, CA · No drug or device payments recorded (2025) ·
(310) 225-3221 Dr. Steven Ohsie, M.D.Rancho Dominguez, CA · No drug or device payments recorded (2025) ·
(310) 225-3244 Dr. Wamda Goreal, M.D.Rancho Dominguez, CA · No drug or device payments recorded (2025) ·
(310) 225-3221 Dr. Barbara Comess, MDRancho Mirage, CA · No drug or device payments recorded (2025) ·
(760) 340-3911 Dr. Daniel Schwartz, M.D.Rancho Mirage, CA · No drug or device payments recorded (2025) ·
(760) 340-3911 Dr. Dennis Frisman, MDRancho Mirage, CA · No drug or device payments recorded (2025) ·
(760) 340-3911 Dr. Gabriel Giannini, M.D.Rancho Mirage, CA · No drug or device payments recorded (2025) ·
(760) 340-3911 Dr. Koushan Siami-namini, MDRancho Mirage, CA · No drug or device payments recorded (2025) ·
(760) 340-3911 Dr. Masoud Movassaghi, MDRancho Mirage, CA · No drug or device payments recorded (2025) ·
(760) 340-3911 Dr. Patti Richardson, MDRancho Mirage, CA · $20 in drug and device payments (2025) ·
(800) 288-8325 Dr. Robin Rawson, M.D.Rancho Mirage, CA · No drug or device payments recorded (2025) ·
(760) 340-9111 Dr. Scott Allen, MDRancho Mirage, CA · $78 in drug and device payments (2025) ·
(760) 340-3911 Dr. Thong Nguyen, DORancho Mirage, CA · $31 in drug and device payments (2025) ·
(760) 340-3911 Dr. Michael Samoszuk, M.D.Rancho Santa Margarita, CA · No drug or device payments recorded (2025) ·
(949) 303-8011 Dr. Allen Mendez, M.D.Redding, CA · No drug or device payments recorded (2025) ·
(530) 255-1000 Dr. Allen Morris, M.D.Redding, CA · No drug or device payments recorded (2025) ·
(530) 255-1000 Dr. Don Stanton, M.D.Redding, CA · No drug or device payments recorded (2025) ·
(530) 255-1000 Dr. John Greaves, M.D.Redding, CA · No drug or device payments recorded (2025) ·
(530) 244-1299 Dr. Julia Mooney, MDRedding, CA · No drug or device payments recorded (2025) ·
(530) 255-1000 Dr. Mark Ramus, M.D.Redding, CA · No drug or device payments recorded (2025) ·
(530) 255-1000 Dr. Matthew Kilpatrick, MD Dr. Ronald England, D.O.Redding, CA · No drug or device payments recorded (2025) ·
(530) 243-7030 Dr. Sean Pitman, M.D.Redding, CA · No drug or device payments recorded (2025) ·
(530) 255-1000 Dr. Tikoes Blankenberg, M.D. Dr. William Ruess, M.D.Redding, CA · No drug or device payments recorded (2025) ·
(530) 255-1000 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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