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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 in Los Angeles594 providers
Diagnostic Radiology in San Diego377 providers
Diagnostic Radiology in San Francisco335 providers
Diagnostic Radiology in Stanford235 providers
Diagnostic Radiology in Sacramento233 providers
Diagnostic Radiology in Orange120 providers
Diagnostic Radiology in Walnut Creek99 providers
Diagnostic Radiology in Loma Linda74 providers
Diagnostic Radiology in Santa Barbara74 providers
Diagnostic Radiology in Palo Alto69 providers
Diagnostic Radiology in La Jolla69 providers
Diagnostic Radiology in San Jose69 providers
Diagnostic Radiology in Oakland68 providers
Diagnostic Radiology in Long Beach64 providers
Diagnostic Radiology in Torrance64 providers
Diagnostic Radiology in Modesto60 providers
Diagnostic Radiology in Fresno58 providers
Diagnostic Radiology in Santa Monica55 providers
Diagnostic Radiology in El Segundo50 providers
Diagnostic Radiology in West Hollywood45 providers
Diagnostic Radiology in Santa Rosa45 providers
Diagnostic Radiology in Newport Beach43 providers
Diagnostic Radiology in Bakersfield41 providers
Diagnostic Radiology in Beverly Hills37 providers

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. Vivian Wing, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 296-7156
Dr. William Hoddick, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 296-7150
Dr. Ying Fung, M.D.
Walnut Creek, CA · No drug or device payments recorded (2025) · (925) 296-7150
Dr. Adil Mazhar, MD
West Covina, CA · No drug or device payments recorded (2025) · (626) 814-2473
Dr. Danica Holt, M.D.
West Covina, CA · $30 in drug and device payments (2025) · (626) 698-7266
Dr. Gerald Grossman, M.D.
West Covina, CA · No drug or device payments recorded (2025) · (323) 932-5301
Dr. Gi-hyung Lee, M.D.
West Covina, CA · No drug or device payments recorded (2025) · (626) 813-9988
Dr. Ivan Rosen, M.D.
West Covina, CA · No drug or device payments recorded (2025) · (626) 814-2540
Dr. Katharine Tansavatdi, M.D.
West Covina, CA · No drug or device payments recorded (2025) · (626) 814-2473
Dr. Pi-lieh Chow, M.D.
West Covina, CA · No drug or device payments recorded (2025) · (626) 814-2473
Dr. Scott Kwok, M.D.
West Covina, CA · $16,822 in drug and device payments (2025) · (626) 813-9988
Dr. Truc Truong, M.D.
West Covina, CA · No drug or device payments recorded (2025) · (626) 813-9988
Dr. Bruce Shragg, M.D.
West Hills, CA · No drug or device payments recorded (2025) · (818) 676-4100
Dr. Joseph Yuhan, M.D.
West Hills, CA · No drug or device payments recorded (2025) · (818) 676-4100
Dr. Martin Cohen, M.D.
West Hills, CA · $119 in drug and device payments (2025) · (818) 676-4100
Dr. Michael Kupfer, M.D.
West Hills, CA · No drug or device payments recorded (2025) · (818) 676-4100
Dr. Payam Kashfian, M.D.
West Hills, CA · No drug or device payments recorded (2025) · (818) 710-6011
Dr. Philip Luu, M.D.
West Hills, CA · $136 in drug and device payments (2025) · (818) 676-4100
Dr. Robert Howard, M.D.
West Hills, CA · No drug or device payments recorded (2025) · (818) 676-4100
Dr. Aida Moeini, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Alexander Grimm, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (323) 687-0096
Dr. Ali Gholamrezanezhad, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Andrew Nguyen
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Charlotte Lansky, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Christine Kim, M.D.
West Hollywood, CA · $124 in drug and device payments (2025) · (310) 423-6500
Dr. Christopher Lee, MD
West Hollywood, CA · No drug or device payments recorded (2025) · Telehealth · (310) 423-6500
Dr. Christopher Slowik, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-3277
Dr. Christopher Watterson, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Cynthia Litwer, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Daniel Berman, MD
West Hollywood, CA · $283 in drug and device payments (2025) · (310) 423-4224
Dr. Emmanuil Smorodinsky, M.D.
West Hollywood, CA · $94 in drug and device payments (2025) · Telehealth · (310) 423-6500
Dr. Evan Norris, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. George Matcuk, M.D.
West Hollywood, CA · $5,025 in drug and device payments (2025) · Telehealth · (310) 423-6500
Dr. Hamidou Drammeh
West Hollywood, CA · $238 in drug and device payments (2025) · (310) 358-2100
Dr. Hayet Amalou, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Humza Haque, MD
West Hollywood, CA · $765 in drug and device payments (2025) · (310) 248-8868
Dr. John Friedman, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Joseph Giaconi, M.D.
West Hollywood, CA · $70 in drug and device payments (2025) · Telehealth · (310) 423-6500
Dr. Justin Shafa, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Lawrence Cohen, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Mariam Thomas, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Mauricio De La Lama, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Meng Geng, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 302-7658
Dr. Michael David, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-3095
Dr. Michelle Melany, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-5055
Dr. Min Kong, MD
West Hollywood, CA · $38 in drug and device payments (2025) · (310) 423-6500
Dr. Mitchell Komaiko, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-8000
Dr. Navid Mehrpoo, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Navid Mostaghni, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 248-8868
Dr. Nikolas Parisis, DO
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500

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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Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Diagnostic Radiology in California? Get featured.