Diagnostic Radiologists in California
Data updated monthly · Last refresh October 2026
4,516 Diagnostic Radiology providers practice in California, including 50 (1%) 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.
4,516providers
50telehealth
Los Angelestop city
Diagnostic Radiology by city in California
Choose a city to see providers there.
Diagnostic Radiology 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. Robert Princenthal, MDThousand Oaks, CA · $1,742 in drug and device payments (2025) ·
(805) 778-1513 Dr. Robert Sitarz, MDThousand Oaks, CA · No drug or device payments recorded (2025) ·
(805) 778-1521 Dr. Roy Bryan, M.D.Thousand Oaks, CA · $198 in drug and device payments (2025) ·
(310) 301-6800 Dr. Roy Gottlieb, D.O.Thousand Oaks, CA · No drug or device payments recorded (2025) ·
(805) 778-1513 Dr. Ruth Polan, MDThousand Oaks, CA · $95 in drug and device payments (2025) ·
(805) 496-7755 Dr. Brian Gamble, M.D.Toluca Lake, CA · $539 in drug and device payments (2025) ·
(818) 985-1221 Dr. Adah Duncan, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 303-5750 Dr. Albert Grabb, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 517-4675 Dr. Alya SheikhTorrance, CA · No drug or device payments recorded (2025) ·
(310) 222-5026 Dr. Babak Kalantari, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 222-2847 Dr. Christina SnyderTorrance, CA · $34 in drug and device payments (2025) ·
(310) 540-7676 Dr. Dana Konecny, MDTorrance, CA · $75 in drug and device payments (2025) ·
(310) 222-2700 Dr. David Ruiz, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 222-2700 Dr. David Stone, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 517-4675 Dr. Elliot Azizollahi, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 222-2847 Dr. George So, M.D.Torrance, CA · $11,114 in drug and device payments (2025) ·
(310) 517-4675 Dr. Glenn Huettner, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 303-5750 Dr. Gregory Eckel, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(424) 306-4748 Dr. Hannah Nien, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(617) 818-2232 Dr. Hans Fischer, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 222-5163 Dr. Heidi Hoffman, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 517-4675 Dr. Hyunjean Hang, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 222-2345 Dr. Jamie Yoon, MDTorrance, CA · No drug or device payments recorded (2025) ·
(424) 306-4000 Dr. Janak Raval, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 540-7676 Dr. Jeffrey Phillips, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 222-5163 Dr. Jerome Gold, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 373-0000 Dr. John Cho, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 222-2345 Dr. John Jordan, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 303-5750 Dr. Jonathan Po, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 222-2808 Dr. Jose Lopez, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 222-2409 Dr. Julie Sim, MDTorrance, CA · $130 in drug and device payments (2025) ·
(310) 517-4709 Dr. Kara-lee Pool, MDTorrance, CA · $5,429 in drug and device payments (2025) ·
(310) 517-4709 Dr. Kurosh Majd, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 517-4675 Dr. Lucas Nishioka, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 303-5750 Dr. Madeleine Fisher, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 517-4675 Dr. Mahduri Inamdar, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 517-4675 Dr. Mariapia Altavilla, M.D.Torrance, CA · $16 in drug and device payments (2025) ·
(310) 222-2847 Dr. Marsha Guerrein, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 540-7676 Dr. Max Liu, MDTorrance, CA · No drug or device payments recorded (2025) ·
(424) 306-4000 Dr. Michael Noronha, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 968-2940 Dr. Michael Stein, MDTorrance, CA · $34 in drug and device payments (2025) ·
(310) 303-5750 Dr. Michelle Kim, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 501-0660 Dr. Minh-chau Vu, MDTorrance, CA · $523 in drug and device payments (2025) ·
(310) 222-2847 Dr. Mitchell Parver, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 517-4675 Dr. Mitchell Sklar, M.D.Torrance, CA · $17 in drug and device payments (2025) ·
(310) 517-4675 Dr. Mohammed FarukhiTorrance, CA · No drug or device payments recorded (2025) ·
(310) 222-2700 Dr. Mylien Pham, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 517-4675 Dr. Patricia Sacks, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 517-4675 Dr. Patrick Choi, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 222-2831 Dr. Paul Lee, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 222-2809 Common questions
How many Diagnostic Radiology providers are in California?There are 4,516 Diagnostic Radiology providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Diagnostic Radiology providers in California offer telehealth?Yes. 50 of the 4,516 Diagnostic Radiology providers in California (about 1%) report offering telehealth services in CMS data.
Which cities in California have the most Diagnostic Radiology providers?Los Angeles (594), San Diego (377), San Francisco (335) have the highest concentration of Diagnostic Radiology providers in California.
How many Diagnostic Radiology providers in California received drug or device company payments?917 of 4,516 Diagnostic Radiology 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 Diagnostic Radiologists in California work in independent practices or large health systems?Among 2,842 Diagnostic Radiologists in California enrolled in Medicare, 6% bill through a solo or small practice with fewer than 10 clinicians, 16% through a mid-size group of 10 to 99, and 78% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Diagnostic Radiologists in California work at?According to CMS facility affiliation records, the California hospitals where the most Diagnostic Radiologists hold privileges are UCSF Medical Center in San Francisco; UC San Diego Health Hillcrest - Hillcrest Med Ctr in San Diego; Uci Health-Orange in Orange.
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