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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. Alexander Guo, M.D.
Placerville, CA · $54 in drug and device payments (2025) · (530) 626-1166
Dr. Algimantas Balciunas, MD
Placerville, CA · No drug or device payments recorded (2025) · (530) 622-1441
Dr. Anietie Okon, M.D.
Placerville, CA · $154 in drug and device payments (2025) · (530) 626-1166
Dr. Jerry Arnold, M.D.
Placerville, CA · No drug or device payments recorded (2025) · (530) 622-1441
Dr. Jonathan Fugitt, M.D.
Placerville, CA · No drug or device payments recorded (2025) · (530) 626-2774
Dr. Richard Budenz, PHD MD
Placerville, CA · No drug or device payments recorded (2025) · (530) 622-1441
Dr. Robert Houts, MD
Placerville, CA · No drug or device payments recorded (2025) · (530) 622-1441
Dr. Huy Tran, M.D.
Pleasant Hill, CA · No drug or device payments recorded (2025) · (215) 681-3835
Dr. Robert Liebig, MD
Pleasant Hill, CA · $22 in drug and device payments (2025) · (925) 685-1047
Dr. Stanley Sizeler, M.D.
Pleasant Hill, CA · No drug or device payments recorded (2025) · (925) 372-6422
Dr. Ashley Altman, MD
Pleasanton, CA · No drug or device payments recorded (2025) · (925) 416-3544
Dr. Brooke Caldwell, M.D.
Pleasanton, CA · No drug or device payments recorded (2025) · (925) 416-6789
Dr. Myrna Castelazo, M.D.
Pleasanton, CA · $130 in drug and device payments (2025) · (925) 416-6789
Dr. Priscilla Wong, MD
Pleasanton, CA · No drug or device payments recorded (2025) · (925) 416-3544
Dr. Ralph Ho, MD
Pleasanton, CA · $449 in drug and device payments (2025) · (925) 416-3540
Dr. Alexander Chien, MD
Pomona, CA · No drug or device payments recorded (2025) · (909) 865-9500
Dr. Bernie Goler, M.D.
Pomona, CA · No drug or device payments recorded (2025) · (909) 620-8180
Dr. Christina Benedict, M.D.
Pomona, CA · No drug or device payments recorded (2025) · (909) 865-9535
Dr. Constantina Lampropoulos, M.D.
Pomona, CA · No drug or device payments recorded (2025) · (909) 620-8180
Dr. Daniel Heitz, MD
Pomona, CA · $692 in drug and device payments (2025) · (909) 865-9535
Dr. Gary Jensen, MD
Pomona, CA · No drug or device payments recorded (2025) · (909) 450-0393
Dr. Harold Damuth, MD
Pomona, CA · No drug or device payments recorded (2025) · (909) 630-7480
Dr. Hrayr Kabakian, MD
Pomona, CA · No drug or device payments recorded (2025) · (909) 865-9500
Dr. Huma Qureshi, M.D.
Pomona, CA · No drug or device payments recorded (2025) · (909) 620-8180
Dr. James Warren, M.D.
Pomona, CA · $46 in drug and device payments (2025) · (714) 573-7647
Dr. Johnson Lightfoote, M.D.
Pomona, CA · No drug or device payments recorded (2025) · (909) 865-9535
Dr. Monish Laxpati, M.D.
Pomona, CA · No drug or device payments recorded (2025) · (909) 622-3166
Dr. Paul Reisch, MD
Pomona, CA · $184 in drug and device payments (2025) · (909) 865-9537
Dr. Robert Ring, MD
Pomona, CA · No drug or device payments recorded (2025) · (909) 865-9500
Dr. Robert Rippner
Pomona, CA · No drug or device payments recorded (2025) · (530) 895-0926
Dr. Samuel Salen, M.D.
Pomona, CA · No drug or device payments recorded (2025) · (909) 570-3108
Dr. Stephen To, M.D.
Pomona, CA · No drug or device payments recorded (2025) · (909) 865-9532
Dr. Warren Becker, M.D.
Pomona, CA · No drug or device payments recorded (2025) · (909) 620-8180
Dr. Wen Ze Niu
Pomona, CA · No drug or device payments recorded (2025) · (909) 623-6116
Dr. Yanle Zhao, MD
Pomona, CA · $2,759 in drug and device payments (2025) · (909) 865-9500
Dr. Chukwuemeka Okoro, MD
Porter Ranch, CA · No drug or device payments recorded (2025) · (310) 301-6800
Dr. Aninchana Sangkharat, D.O.
Porterville, CA · No drug or device payments recorded (2025) · (559) 784-1110
Dr. Gregory Mellor, M.D.
Porterville, CA · No drug or device payments recorded (2025) · (559) 782-1973
Dr. Prudence Smith, M.D.
Porterville, CA · No drug or device payments recorded (2025) · (559) 782-2222
Dr. Stuart Young, M.D.
Portola Valley, CA · No drug or device payments recorded (2025) · (650) 207-1987
Dr. Charles Lee, MD
Poway, CA · No drug or device payments recorded (2025) · (831) 206-8547
Dr. Michael Lin, M.D.
Poway, CA · No drug or device payments recorded (2025) · (858) 546-3800
Dr. Ronald Sokoloff, MD
Poway, CA · $32 in drug and device payments (2025) · (619) 379-8697
Dr. Alfonso Carrillo, M.D.
Rancho Cucamonga, CA · $20 in drug and device payments (2025) · (909) 620-8180
Dr. Alice Wang, M.D.
Rancho Cucamonga, CA · $35 in drug and device payments (2025) · (909) 620-8180
Dr. Fred Shu, MD
Rancho Cucamonga, CA · No drug or device payments recorded (2025) · (909) 620-8180
Dr. Ismail Khan, DO
Rancho Cucamonga, CA · No drug or device payments recorded (2025) · (800) 872-2273
Dr. Sherman Rhee, M.D.
Rancho Cucamonga, CA · No drug or device payments recorded (2025) · (909) 620-8180
Dr. Steven Cobb, M.D.
Rancho Cucamonga, CA · No drug or device payments recorded (2025) · (909) 620-8180
Dr. Stuart Berry, M.D.
Rancho Cucamonga, CA · $1,321 in drug and device payments (2025) · (909) 466-4231

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.