Nuclear Medicine Doctors in California
Data updated monthly · Last refresh October 2026
150 Nuclear Medicine providers practice in California, including 13 (9%) 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.
150providers
13telehealth
Los Angelestop city
Nuclear Medicine by city in California
Choose a city to see providers there.
Nuclear Medicine 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. Jon Umlauf, MDSan Diego, CA · No drug or device payments recorded (2025) ·
(206) 616-5781 Dr. Kousha Zarnegar, M.D.San Diego, CA · No drug or device payments recorded (2025) ·
(800) 926-8273 Dr. Michael Starsiak, MDSan Diego, CA · $134 in drug and device payments (2025) ·
(619) 532-8775 Dr. Ryan Pham, M.D.San Diego, CA · No drug or device payments recorded (2025) ·
(800) 926-8273 Dr. Samuel Halpern, M.D.San Diego, CA · No drug or device payments recorded (2025) ·
(619) 543-6680 Dr. Suzan ParhizgarSan Diego, CA · $100 in drug and device payments (2025) ·
(800) 926-8273 Dr. Xueren Zhao, MDSan Diego, CA · No drug or device payments recorded (2025) ·
(800) 926-8273 Dr. Eugene Morita, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 885-7280 Dr. Michael Dae, M.D.San Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-1521 Dr. Nai Chen, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 833-2000 Dr. Rahman Akinlusi, MDSan Francisco, CA · $37 in drug and device payments (2025) · Telehealth ·
(415) 353-1457 Dr. Surekha Yadav, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 342-8354 Dr. Susan Tang, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 833-2000 Dr. Erlinda Dizon, MDSan Jose, CA · No drug or device payments recorded (2025) ·
(408) 972-7000 Dr. Powen Tu, MD PHDSan Jose, CA · No drug or device payments recorded (2025) ·
(408) 972-7000 Dr. Daniel Rimkus, M.D.Santa Barbara, CA · No drug or device payments recorded (2025) ·
(805) 455-6283 Dr. David Carlson, M.D.Santa Barbara, CA · $57 in drug and device payments (2025) ·
(805) 563-5870 Dr. Christine Keeling, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Edison Chiu, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Kenneth Nielsen, MDSanta Clara, CA · $35 in drug and device payments (2025) ·
(408) 236-6400 Dr. Margaret Maclean, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Ryan Niederkohr, M.D.Santa Clara, CA · No drug or device payments recorded (2025) ·
(408) 851-5600 Dr. Fereshteh Hajsadeghi, MDSanta Clarita, CA · No drug or device payments recorded (2025) ·
(562) 852-0099 Dr. Ali Salavati, M.D., M.P.H.Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 319-5022 Dr. Edwin Glass, M.D.Santa Monica, CA · No drug or device payments recorded (2025) ·
(310) 829-9788 Dr. George Edwards, M.D.Santa Monica, CA · No drug or device payments recorded (2025) ·
(310) 829-8229 Dr. Stephen Meisel, M.D.Santa Monica, CA · No drug or device payments recorded (2025) ·
(800) 398-8999 Dr. Seyed Ali Khonsary, M.D.South Gate, CA · No drug or device payments recorded (2025) ·
(323) 249-6162 Dr. Hung Tsang, MDSouth San Francisco, CA · No drug or device payments recorded (2025) ·
(650) 742-2000 Dr. Jason Cohen, MDStanford, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 723-4000 Dr. Matteo Novello, MDStanford, CA · $108 in drug and device payments (2025) · Telehealth ·
(650) 723-4000 Dr. Michael Goris, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Myo Han, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Ray Zhang, MD, PHDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Carol Chang, D.O.Sylmar, CA · No drug or device payments recorded (2025) ·
(818) 364-3031 Dr. Manju Gan, MDSylmar, CA · No drug or device payments recorded (2025) ·
(818) 364-4034 Dr. Randy Yeh, M.D.Sylmar, CA · $3,981 in drug and device payments (2025) · Telehealth ·
(818) 364-3566 Dr. Cynthia Mayer, DOTorrance, CA · $31 in drug and device payments (2025) ·
(310) 303-5764 Dr. Lalitha Ramanna, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 303-5750 Dr. Robbie Sooriash, M.D.Valencia, CA · No drug or device payments recorded (2025) ·
(310) 625-0010 Dr. Sabir Khan, MDVallejo, CA · No drug or device payments recorded (2025) ·
(707) 651-1000 Dr. Purnima Shah, M.D.Van Nuys, CA · No drug or device payments recorded (2025) ·
(818) 782-6110 Dr. John Seder, MDVentura, CA · No drug or device payments recorded (2025) ·
(805) 682-7744 Dr. John Stauffer, MDVentura, CA · No drug or device payments recorded (2025) ·
(805) 652-6100 Dr. David Evans, M.D.Vista, CA · No drug or device payments recorded (2025) ·
(760) 806-4355 Dr. Arden Kwan, MDWalnut Creek, CA · No drug or device payments recorded (2025) ·
(925) 295-4000 Dr. Juanita Yun, MDWalnut Creek, CA · No drug or device payments recorded (2025) ·
(925) 295-4000 Dr. Mohan Ramaswamy, MDWalnut Creek, CA · No drug or device payments recorded (2025) ·
(925) 295-4000 Dr. Raul Jay Idea, MDWoodland Hills, CA · No drug or device payments recorded (2025) ·
(818) 719-2000 Dr. Wei Chen, MDWoodland Hills, CA · $125 in drug and device payments (2025) ·
(818) 719-2000 Common questions
How many Nuclear Medicine providers are in California?There are 150 Nuclear Medicine providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Nuclear Medicine providers in California offer telehealth?Yes. 13 of the 150 Nuclear Medicine providers in California (about 9%) report offering telehealth services in CMS data.
Which cities in California have the most Nuclear Medicine providers?Los Angeles (23), Sacramento (15), San Diego (12) have the highest concentration of Nuclear Medicine providers in California.
How many Nuclear Medicine providers in California received drug or device company payments?33 of 150 Nuclear Medicine providers in California (22%) 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 Nuclear Medicine Doctors in California work in independent practices or large health systems?Among 67 Nuclear Medicine Doctors in California enrolled in Medicare, 12% bill through a solo or small practice with fewer than 10 clinicians, 6% through a mid-size group of 10 to 99, and 82% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Nuclear Medicine Doctors in California work at?According to CMS facility affiliation records, the California hospitals where the most Nuclear Medicine Doctors hold privileges are Ronald Reagan UCLA Medical Center in Los Angeles; UCLA West Valley Medical Center in West Hills; Sutter Roseville Medical Center in Roseville.
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