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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. Hemlata Lepkowski, MD
Tustin, CA · No drug or device payments recorded (2025) · (714) 543-7643
Dr. Huy Le, M.D.
Tustin, CA · No drug or device payments recorded (2025) · (714) 665-9890
Dr. Khanh Vu, MD
Tustin, CA · $21 in drug and device payments (2025) · (714) 665-9890
Dr. Reza Dehdari, M.D.
Tustin, CA · No drug or device payments recorded (2025) · (714) 456-7890
Dr. Siu-ming Tam, M.D.
Tustin, CA · No drug or device payments recorded (2025) · (714) 665-6901
Dr. Thanh Phung, M.D.
Tustin, CA · No drug or device payments recorded (2025) · (714) 665-9890
Dr. Brandon Dugar, D.O.
Twentynine Palms, CA · No drug or device payments recorded (2025) · (619) 796-2855
Dr. John Vigilante, M.D.
Twentynine Palms, CA · No drug or device payments recorded (2025) · (760) 830-2190
Dr. Gary Ballard, MD
Ukiah, CA · No drug or device payments recorded (2025) · (707) 462-9028
Dr. Jade L'heureux, MD
Ukiah, CA · No drug or device payments recorded (2025) · (707) 462-3111
Dr. Laura Winkle, M.D.
Ukiah, CA · No drug or device payments recorded (2025) · (707) 463-7342
Dr. Philip Tamanaha, M.D.
Ukiah, CA · No drug or device payments recorded (2025) · (707) 463-7626
Dr. Bartholomew Palenchar, M.D.
Upland, CA · No drug or device payments recorded (2025) · (909) 466-4231
Dr. Carl Schultz, M.D.
Upland, CA · No drug or device payments recorded (2025) · (909) 466-4231
Dr. David Berry, M.D.
Upland, CA · No drug or device payments recorded (2025) · (909) 466-4231
Dr. David Dang, M.D.
Upland, CA · No drug or device payments recorded (2025) · (909) 920-4710
Dr. James Akamine, M.D.
Upland, CA · No drug or device payments recorded (2025) · (909) 466-4231
Dr. Patrick Bryan, M.D.
Upland, CA · No drug or device payments recorded (2025) · (909) 466-4231
Dr. Peter Yoo, M.D.
Upland, CA · $153 in drug and device payments (2025) · (909) 985-2811
Dr. Saba El Yousef, M.D.
Upland, CA · No drug or device payments recorded (2025) · (909) 466-4231
Dr. Sangku Kang, M.D.
Upland, CA · No drug or device payments recorded (2025) · (909) 466-4231
Dr. Yoon Chang, MD
Upland, CA · No drug or device payments recorded (2025) · (909) 985-2811
Dr. Marc Brown
Vacaville, CA · No drug or device payments recorded (2025) · (510) 685-9527
Dr. Brian Ng, MD
Valencia, CA · $168 in drug and device payments (2025) · (310) 301-6800
Dr. Joshua Hanelin, M.D.
Valencia, CA · $139 in drug and device payments (2025) · (323) 549-3030
Dr. Rolf Arndt, MD
Valencia, CA · No drug or device payments recorded (2025) · (661) 253-8705
Dr. Samuel Moses, MD
Valencia, CA · No drug or device payments recorded (2025) · (661) 253-2231
Dr. Srinivas Peddi, MD
Valencia, CA · No drug or device payments recorded (2025) · (323) 549-3030
Dr. Anthony Ronco, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Christopher Kagan, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Dean Genes, M.D.
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Eugene Ong, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Hillary Ryan, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1400
Dr. Jerry Lee, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Jessica Bowman
Vallejo, CA · No drug or device payments recorded (2025) · (707) 638-5200
Dr. Jill Spadia, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Lee Shratter, M.D.
Vallejo, CA · No drug or device payments recorded (2025) · (925) 296-7156
Dr. Michael Brodsky, M.D.
Vallejo, CA · No drug or device payments recorded (2025) · (925) 296-7156
Dr. Patricia Silver, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Peter Chuang, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1825
Dr. Richard Placone, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Robert Wong, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Susan Hattori-oyama, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Susan Hermanson, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Viktor Naiman, M.D.
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1315
Dr. Andre Sanii, M.D.
Van Nuys, CA · $21 in drug and device payments (2025) · (818) 909-7111
Dr. Ashutosh Shelat
Van Nuys, CA · No drug or device payments recorded (2025) · (818) 901-6600
Dr. Brianna Abadie, M.D.
Van Nuys, CA · No drug or device payments recorded (2025) · (818) 901-6600
Dr. Eric Wong, MD
Van Nuys, CA · No drug or device payments recorded (2025) · (818) 901-6600
Dr. Farrokh Zandpour, M.D.
Van Nuys, CA · No drug or device payments recorded (2025) · (818) 909-7111

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.

Related reading on HealthcareDiscovery.AI

Diagnostic Radiology in all 50 states Search all 4,516 in the directory Ask Zach for help choosing

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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.