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.
Where Pathologists (Anatomic & Clinical) in California practice
From CMS Medicare enrollment records covering 840 of the 1,553 providers listed here (54%). Providers who do not bill Medicare are not included in these figures.
25%solo or small practice (under 10 clinicians)
27%mid-size group (10 to 99)
48%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Pathologists (Anatomic & Clinical) | All clinicians in group | Main city |
| Southern California Permanente Medical Group | 76 | 11,250 | Anaheim |
| Stanford Health Care | 54 | 3,152 | Stanford |
| Permanente Medical Group Inc. | 50 | 10,928 | Santa Clara |
| Cedars-Sinai Medical Care Foundation | 43 | 1,684 | West Hollywood |
| UCLA Pathology and Laboratory Medicine Group | 34 | 68 | Los Angeles |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Pathologists (Anatomic & Clinical) affiliated |
| Stanford Health Care | Stanford | Nonprofit | 5 of 5 | 63 |
| Stanford Health Care Tri-Valley | Pleasanton | Nonprofit | 5 of 5 | 49 |
| Cedars-Sinai Medical Center | Los Angeles | Nonprofit | 5 of 5 | 42 |
| Ronald Reagan UCLA Medical Center | Los Angeles | Government | 4 of 5 | 32 |
| UCSF Medical Center | San Francisco | Nonprofit | 4 of 5 | 31 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
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. Theodore Findley, MDAlameda, CA · No drug or device payments recorded (2025) ·
(510) 814-4305 Dr. Kenneth Hirsch, MDAlamo, CA · No drug or device payments recorded (2025) ·
(925) 820-2093 Dr. Edward Lai, MDAlhambra, CA · No drug or device payments recorded (2025) ·
(626) 458-4750 Dr. George Csathy, M.D.Aliso Viejo, CA · No drug or device payments recorded (2025) ·
(949) 643-7445 Dr. Jian-feng WangAliso Viejo, CA · $78 in drug and device payments (2025) ·
(949) 425-5842 Dr. Renuka Agrawal, M.D.Aliso Viejo, CA · No drug or device payments recorded (2025) ·
(949) 643-7460 Dr. Ted Farzaneh, M.D.Aliso Viejo, CA · No drug or device payments recorded (2025) ·
(949) 445-7300 Dr. Ali Ali, M.D.Anaheim, CA · No drug or device payments recorded (2025) ·
(714) 220-4526 Dr. Asma Quddusi, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. David Huebner-chan, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Greg Marganian, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Jaklyn Mcclendon, M.D.Anaheim, CA · No drug or device payments recorded (2025) ·
(714) 999-6075 Dr. Jana Pindur, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Jason Scapa, M.D.Anaheim, CA · No drug or device payments recorded (2025) ·
(183) 357-4227 Dr. Lei Zhang, M.D.Anaheim, CA · No drug or device payments recorded (2025) ·
(714) 774-1450 Dr. Mark Janssen, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(888) 988-2800 Dr. Stephen Koh, M.D., PH.D.Anaheim, CA · No drug or device payments recorded (2025) ·
(714) 644-6160 Dr. Steven Lum, M.D.Anaheim, CA · No drug or device payments recorded (2025) ·
(714) 999-6075 Dr. Terry Welsh, MDAnaheim, CA · No drug or device payments recorded (2025) ·
(714) 999-6075 Dr. Visesh RavikumarAnaheim, CA · No drug or device payments recorded (2025) ·
(877) 608-0044 Dr. Suhji Kim, MDAntioch, CA · No drug or device payments recorded (2025) ·
(925) 779-7211 Dr. Melinda Labuguen, MDApple Valley, CA · No drug or device payments recorded (2025) ·
(760) 946-8873 Dr. Regina Imelda De Luna, M.D.Apple Valley, CA · $15 in drug and device payments (2025) ·
(760) 946-8873 Dr. Loren Ayres, M.D.Arcadia, CA · No drug or device payments recorded (2025) ·
(626) 445-4441 Dr. Roger Der, M.D.Arcadia, CA · No drug or device payments recorded (2025) ·
(626) 574-3488 Dr. William Bishop, D.O.Arcadia, CA · No drug or device payments recorded (2025) ·
(626) 574-3488 Dr. Philip Vogelsang, M.D., PH.D.Arcata, CA · No drug or device payments recorded (2025) ·
(707) 822-3621 Dr. Adam Lang, M.D.Bakersfield, CA · $17 in drug and device payments (2025) ·
(661) 324-4737 Dr. Agnes Wu, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 325-2640 Dr. Elizabeth Akiyama, M.D.Bakersfield, CA · $146 in drug and device payments (2025) ·
(661) 336-0622 Dr. Ellen Bunyi-teopengco, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 336-0622 Dr. Fangluo Liu, M.D.Bakersfield, CA · $41 in drug and device payments (2025) ·
(661) 322-2206 Dr. Gian Yakoub, DOBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 872-3311 Dr. Jacques Dorce, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 336-0622 Dr. Jiafan Liu, MDBakersfield, CA · No drug or device payments recorded (2025) ·
(613) 274-6476 Dr. Lilibeth Guinto-miranda, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 336-0622 Dr. Linda Veneman, MDBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 325-0744 Dr. Philip DuttBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 326-2000 Dr. Phillip Chen, M.D.Bakersfield, CA · $1,344 in drug and device payments (2025) ·
(916) 580-9462 Dr. Savita ShertukdeBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 623-2000 Dr. Steve Hwang, MDBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 325-2640 Dr. William Stull, MDBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 326-2000 Dr. Judy Ko, MDBaldwin Park, CA · No drug or device payments recorded (2025) ·
(626) 851-1011 Dr. Randi Burke, MDBaldwin Park, CA · No drug or device payments recorded (2025) ·
(626) 851-1011 Dr. Robert Zuch, MDBaldwin Park, CA · No drug or device payments recorded (2025) ·
(626) 851-1011 Dr. Sajjad Syed, MDBaldwin Park, CA · No drug or device payments recorded (2025) ·
(626) 851-1011 Dr. Tosha Brown, M.D.Baldwin Park, CA · No drug or device payments recorded (2025) ·
(626) 337-0676 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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