Molecular Genetic Pathologists (Pathology) in California
Data updated monthly · Last refresh October 2026
25 Molecular Genetic Pathology (Pathology) providers practice in California. 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.
25providers
Los Angelestop city
Molecular Genetic Pathology (Pathology) by city in California
Choose a city to see providers there.
Where Molecular Genetic Pathologists (Pathology) in California practice
From CMS Medicare enrollment records covering 4 of the 25 providers listed here (16%). Providers who do not bill Medicare are not included in these figures.
Largest practice groups
| Group (as registered with Medicare) | Molecular Genetic Pathologists (Pathology) | All clinicians in group | Main city |
| University of California San Francisco | 2 | 1,780 | San Francisco |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Molecular Genetic Pathologists (Pathology) affiliated |
| Santa Monica - UCLA Med Ctr & Orthopaedic Hospital | Santa Monica | Nonprofit | 5 of 5 | 2 |
| Ronald Reagan UCLA Medical Center | Los Angeles | Government | 4 of 5 | 2 |
| UCSF Medical Center | San Francisco | Nonprofit | 4 of 5 | 2 |
| UCSF Health St. Mary's Hospital | San Francisco | Nonprofit | 4 of 5 | 2 |
| UCLA West Valley Medical Center | West Hills | For-profit | 2 of 5 | 2 |
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.
Molecular Genetic Pathology (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. Jennifer Hummel, M.D.Aliso Viejo, CA · No drug or device payments recorded (2025) ·
(949) 445-7300 Dr. Petros Giannikopoulos, M.D.Berkeley, CA · $41 in drug and device payments (2025) ·
(415) 710-9444 Dr. Jacqueline Lekostaj, M.D., PH.D.Carlsbad, CA · No drug or device payments recorded (2025) ·
(760) 516-5113 Dr. Juan-sebastian Saldivar, MDDuarte, CA · No drug or device payments recorded (2025) ·
(626) 359-8111 Dr. Patricia Aoun, MDDuarte, CA · No drug or device payments recorded (2025) ·
(626) 359-8111 Dr. Jennifer Wei, M.D., PHDIrvine, CA · No drug or device payments recorded (2025) ·
(949) 540-6300 Dr. Saed Rahmat Sadeghi, MDIrvine, CA · $34,049 in drug and device payments (2025) ·
(310) 962-9523 Dr. Anamaria MunteanuLos Angeles, CA · $96 in drug and device payments (2025) ·
(310) 206-0944 Dr. Beatrice Knudsen, M.D., PH.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 248-8687 Dr. Matthew Hiemenz, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 361-4100 Dr. Robert Bookstein, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 423-3277 Dr. Wayne Grody, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 206-6581 Dr. Justin Odegaard, MD, PHDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 814-2311 Dr. Stuart Scott, PHDPalo Alto, CA · No drug or device payments recorded (2025) ·
(646) 706-2097 Dr. Lauren LawrenceRedwood City, CA · No drug or device payments recorded (2025) ·
(855) 698-8887 Dr. Jae ElkindSan Diego, CA · No drug or device payments recorded (2025) ·
(619) 543-8254 Dr. Linda Wasserman, M.D.San Diego, CA · No drug or device payments recorded (2025) ·
(858) 534-8955 Dr. Elliott Seeley, M.D., PH.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 514-0738 Dr. Jeffry Simko, MDSan Francisco, CA · $149 in drug and device payments (2025) ·
(415) 885-7304 Dr. Nancy Joseph, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-7359 Dr. Athanasios Tsiatis, MDSouth San Francisco, CA · No drug or device payments recorded (2025) ·
(650) 466-7125 Dr. Danica Wiredja, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 721-5755 Dr. Erik Nohr, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-5252 Dr. Franklin Mullins, M.D., PH.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 207-2940 Dr. Girish Putcha, MD, PHDStanford, CA · No drug or device payments recorded (2025) ·
(650) 862-6142 Common questions
How many Molecular Genetic Pathology (Pathology) providers are in California?There are 25 Molecular Genetic Pathology (Pathology) providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Which cities in California have the most Molecular Genetic Pathology (Pathology) providers?Los Angeles (5), Stanford (4), San Francisco (3) have the highest concentration of Molecular Genetic Pathology (Pathology) providers in California.
How many Molecular Genetic Pathology (Pathology) providers in California received drug or device company payments?4 of 25 Molecular Genetic Pathology (Pathology) providers in California (16%) 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.
Which hospitals do Molecular Genetic Pathologists (Pathology) in California work at?According to CMS facility affiliation records, the California hospitals where the most Molecular Genetic Pathologists (Pathology) hold privileges are Santa Monica - UCLA Med Ctr & Orthopaedic Hospital in Santa Monica; Ronald Reagan UCLA Medical Center in Los Angeles; UCSF Medical Center in San Francisco.
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