HealthcareDiscovery.AI / Doctors / California / Diagnostic Radiology

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. Vignathi Atluri, M.D.,
Millbrae, CA · No drug or device payments recorded (2025) · (650) 888-8319
Dr. Michael Gothelf, MD
Mill Valley, CA · No drug or device payments recorded (2025) · (415) 383-8947
Dr. Kiarash Vahidi, M.D.
Mission Hills, CA · No drug or device payments recorded (2025) · (818) 898-4530
Dr. Lily Yang, MD
Mission Hills, CA · No drug or device payments recorded (2025) · (818) 898-4530
Dr. Martin Applebaum, M.D.
Mission Hills, CA · No drug or device payments recorded (2025) · (818) 898-4530
Dr. Raja Anne, M.D.
Mission Hills, CA · No drug or device payments recorded (2025) · (818) 496-4530
Dr. Timothy Sprague, M.D.
Mission Hills, CA · No drug or device payments recorded (2025) · (818) 898-4530
Dr. Vikash Singh, M.D.
Mission Hills, CA · $234 in drug and device payments (2025) · (818) 496-4530
Dr. Andrew Breiterman, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 212-6526
Dr. Brian Tzung, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-7744
Dr. Charlyne Wu, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-1400
Dr. David Gedeon, MD
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-1400
Dr. Dawn Tanner, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-7744
Dr. Elliot Sacks, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 263-8620
Dr. Farhad Khorashadi, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-7744
Dr. Jackson Penry, MD
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-7744
Dr. Joseph England, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (610) 742-8043
Dr. Joseph Konstantarakis, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-7744
Dr. Kathryn Yung, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-7744
Dr. Khwaja Ahmed, M.D.
Mission Viejo, CA · $200 in drug and device payments (2025) · (949) 900-6246
Dr. Madhavan Krishnan, MD
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 462-3999
Dr. Navid Jahed, M.D.
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-7744
Dr. Sahar Shiraj, MD
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-1400
Dr. Stephen Simon, MD
Mission Viejo, CA · No drug or device payments recorded (2025) · (949) 364-7744
Dr. Talal Beydoun, MD
Mission Viejo, CA · $149 in drug and device payments (2025) · (949) 367-1010
Dr. Ajay Sood, MD
Modesto, CA · No drug or device payments recorded (2025) · (209) 735-5000
Dr. Ajit Nijjar, M.D.
Modesto, CA · No drug or device payments recorded (2025) · (209) 577-4444
Dr. Ali Mozayan, MD
Modesto, CA · No drug or device payments recorded (2025) · (209) 550-4755
Dr. Arka Dutta, MD
Modesto, CA · No drug or device payments recorded (2025) · (209) 550-4755
Dr. Arturo Macasinag, M.D
Modesto, CA · No drug or device payments recorded (2025) · (209) 521-6097
Dr. Avik Patel, D.O.
Modesto, CA · $19 in drug and device payments (2025) · (916) 708-8038
Dr. Brian Haas, M.D.
Modesto, CA · No drug or device payments recorded (2025) · (209) 715-1401
Dr. Brian Wistow, M.D.
Modesto, CA · No drug or device payments recorded (2025) · (209) 524-1211
Dr. Cesar Tumakay, D.O.
Modesto, CA · No drug or device payments recorded (2025) · (209) 524-1211
Dr. David Li, D.O.
Modesto, CA · No drug or device payments recorded (2025) · (209) 524-1211
Dr. Dennis Alsofrom, M.D.
Modesto, CA · No drug or device payments recorded (2025) · (209) 577-4444
Dr. Dushyant Thakur, MD
Modesto, CA · No drug or device payments recorded (2025) · (209) 550-4755
Dr. Gordon Onaka, MD
Modesto, CA · No drug or device payments recorded (2025) · (209) 524-1211
Dr. Herbert Helbig, M.D.
Modesto, CA · No drug or device payments recorded (2025) · (209) 577-4444
Dr. James Mulrooney, M.D.
Modesto, CA · No drug or device payments recorded (2025) · (209) 577-4444
Dr. James Summers, M.D.
Modesto, CA · No drug or device payments recorded (2025) · (209) 524-1211
Dr. Jasmine Branchcomb, M.D.
Modesto, CA · No drug or device payments recorded (2025) · (209) 550-4755
Dr. Jason Yu
Modesto, CA · No drug or device payments recorded (2025) · (209) 550-4755
Dr. Jenny Lu, MD
Modesto, CA · $63 in drug and device payments (2025) · (209) 550-4755
Dr. Jerry Grigoropoulos, M.D.
Modesto, CA · No drug or device payments recorded (2025) · (209) 571-6622
Dr. John Martin, M.D.
Modesto, CA · No drug or device payments recorded (2025) · (209) 577-4444
Dr. Joseph Higgins, M.D.
Modesto, CA · No drug or device payments recorded (2025) · (209) 577-4444
Dr. Kevin Whang, M.D.
Modesto, CA · No drug or device payments recorded (2025) · (209) 577-4444
Dr. Kirk Simon, MD
Modesto, CA · No drug or device payments recorded (2025) · (209) 557-1000
Dr. Kirsten Gaarder, MD
Modesto, CA · No drug or device payments recorded (2025) · (209) 342-5920

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

Related

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
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.