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. Mohammad Madani, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Muhammad Manzoor, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Myles Nightingale, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Negaur Iranpour, MDStanford, CA · $75 in drug and device payments (2025) · Telehealth ·
(650) 723-4000 Dr. Nelly Salem, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Nicholas Bates, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4527 Dr. Nita Nayak, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Ok Kyu Song, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Pamela Yan, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Paraag Bhatt, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 725-6344 Dr. Patrick Barnes, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Payam Massaband, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-6661 Dr. Pejman Ghanouni, M.D., PH.D.Stanford, CA · $13,997 in drug and device payments (2025) · Telehealth ·
(650) 723-4000 Dr. Peter Kane, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Peter Moskowitz, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Phyllis Yang, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-8462 Dr. Ping Quach, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 725-2181 Dr. Pranay Kothari, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(520) 324-5095 Dr. Preeti Sukerkar, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Priyanka Garg, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Qiqing Ge, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 725-8018 Dr. Quazi Al-tariq, M.D.Stanford, CA · $76 in drug and device payments (2025) ·
(650) 723-4000 Dr. Rachel Taghvaei, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Rafik Zarifa, M.D.Stanford, CA · $24 in drug and device payments (2025) ·
(650) 723-4000 Dr. Ragu Nathan, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Richard Graf, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Richard Hallett, M.D.Stanford, CA · $4,185 in drug and device payments (2025) ·
(650) 723-4000 Dr. Richard Lee, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Richard Wang, MDStanford, CA · $46 in drug and device payments (2025) ·
(650) 723-4000 Dr. Robert Boutin, MDStanford, CA · $107 in drug and device payments (2025) ·
(650) 723-4000 Dr. Rohit Anand, MDStanford, CA · $149 in drug and device payments (2025) ·
(650) 723-4000 Dr. Roi Bittane, M.D.Stanford, CA · $47 in drug and device payments (2025) ·
(650) 723-4000 Dr. Russell Stewart, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Ryan Brunsing, MD, PHDStanford, CA · $463 in drug and device payments (2025) · Telehealth ·
(650) 723-4000 Dr. Sabrina Ward, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Sachin Malik, MDStanford, CA · $17 in drug and device payments (2025) ·
(650) 723-4000 Dr. Sagar Wagle, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Saif Baig, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Sandip Biswal, MDStanford, CA · $54 in drug and device payments (2025) ·
(650) 723-4000 Dr. Sarah Miller, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Sarah Pittman, MDStanford, CA · $847 in drug and device payments (2025) ·
(650) 723-4000 Dr. Sariya Siddiqui, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Scott Atlas, MDStanford, CA · $607 in drug and device payments (2025) ·
(650) 723-4000 Dr. Scott Francis Refugio, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 725-6344 Dr. Se-young Yoon, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Shan Hansra, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Shannon Gaffney, DOStanford, CA · $15 in drug and device payments (2025) ·
(650) 723-4000 Dr. Shawn Sun, MDStanford, CA · $177 in drug and device payments (2025) ·
(650) 723-4000 Dr. Sheila Enamandram, MDStanford, CA · $700 in drug and device payments (2025) ·
(650) 723-4000 Dr. Stacey Keel, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-6661 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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