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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. David Jackson, M.D.
Chino Hills, CA · No drug or device payments recorded (2025) · (626) 821-5903
Dr. Yuming Yin, MD
Chino Hills, CA · No drug or device payments recorded (2025) · (361) 876-3054
Dr. John Yasmer, D.O.
Claremont, CA · No drug or device payments recorded (2025) · (909) 293-9327
Dr. Bonna Rogers-neufeld, M.D.
Clovis, CA · No drug or device payments recorded (2025) · (559) 297-0300
Dr. Felix Wang, M.D.
Clovis, CA · No drug or device payments recorded (2025) · (559) 297-0300
Dr. Glenn Hananouchi, M.D.
Clovis, CA · No drug or device payments recorded (2025) · (559) 297-0300
Dr. Harjot Dulai, MD
Clovis, CA · No drug or device payments recorded (2025) · (412) 223-2529
Dr. Larry De St. Jeor, M.D.
Clovis, CA · No drug or device payments recorded (2025) · (559) 297-0300
Dr. Mark Alson, M.D.
Clovis, CA · No drug or device payments recorded (2025) · (559) 297-0300
Dr. Sadri Akin, M.D.
Clovis, CA · No drug or device payments recorded (2025) · (559) 297-0300
Dr. Andrew Lopez, RRA
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1000
Dr. Andrew Song, M.D.
Colton, CA · $156 in drug and device payments (2025) · (909) 580-1520
Dr. Chandler Shyu, MD
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1520
Dr. Chul Chae, M.D.
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1520
Dr. Donald Dennis, MD
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1000
Dr. Frederick Orr, M.D.
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1520
Dr. Ha Le, M.D.
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1520
Dr. James Kim, M.D.
Colton, CA · $29 in drug and device payments (2025) · (909) 580-1520
Dr. James Park, MD
Colton, CA · $69 in drug and device payments (2025) · (909) 580-2178
Dr. John Sohn, M.D.
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1520
Dr. Michael Gentry, MD
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1520
Dr. Sylvia Ortiz, M.D.
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1520
Dr. Thuan Dang, M.D.
Colton, CA · No drug or device payments recorded (2025) · (909) 580-1520
Dr. Tung Huynh, M.D.
Colton, CA · $242 in drug and device payments (2025) · (909) 580-1520
Dr. Chadwick Morgan, M.D.
Colusa, CA · No drug or device payments recorded (2025) · (530) 458-5821
Dr. John Dalle, D.O.
Corona, CA · No drug or device payments recorded (2025) · (951) 238-6071
Dr. George Unger, MD
Coronado, CA · No drug or device payments recorded (2025) · (480) 385-9880
Dr. Freddie Combs, M.D.
Costa Mesa, CA · No drug or device payments recorded (2025) · (949) 515-3544
Dr. Lynda Frye, M.D.
Costa Mesa, CA · No drug or device payments recorded (2025) · (877) 378-0401
Dr. David Underwood, M.D
Covina, CA · $41 in drug and device payments (2025) · (626) 915-5181
Dr. Ghada Assassa-solh, M.D
Covina, CA · No drug or device payments recorded (2025) · (626) 915-6281
Dr. Ilyas Khan, M.D.
Covina, CA · No drug or device payments recorded (2025) · (626) 915-5181
Dr. Jae Yoon, M.D
Covina, CA · $15 in drug and device payments (2025) · (626) 915-5181
Dr. Jaime Schvartzman, M.D
Covina, CA · No drug or device payments recorded (2025) · (626) 915-5181
Dr. Michael Christie
Covina, CA · No drug or device payments recorded (2025) · (760) 242-7777
Dr. Michael Grossman, M.D.
Covina, CA · No drug or device payments recorded (2025) · (626) 915-5181
Dr. William Pfisterer, M.D.
Covina, CA · No drug or device payments recorded (2025) · (626) 915-5181
Dr. Dennis Son, M.D.
Culver City, CA · No drug or device payments recorded (2025) · (310) 713-9601
Dr. Frederick Grossman, MD
Culver City, CA · No drug or device payments recorded (2025) · (310) 836-1574
Dr. Imtiaz Qureshi, MD
Cupertino, CA · No drug or device payments recorded (2025) · (650) 940-7173
Dr. Mamta Gupta, M.D.
Cupertino, CA · No drug or device payments recorded (2025) · (952) 595-1100
Dr. Ramesh Gopi, MD
Cupertino, CA · $173 in drug and device payments (2025) · (650) 940-7218
Dr. Michael Lai, M.D.
Daly City, CA · $18 in drug and device payments (2025) · (650) 991-6503
Dr. Stephen Abedon, M.D.
Daly City, CA · No drug or device payments recorded (2025) · (650) 691-6503
Dr. Kunal Sidhar, M.D.
Dana Point, CA · $768 in drug and device payments (2025) · (949) 374-4312
Dr. Lewis Bruggeman, M.D.
Dana Point, CA · No drug or device payments recorded (2025) · (949) 489-7659
Dr. Navid Zenooz, M.D.
Danville, CA · No drug or device payments recorded (2025) · (310) 383-1109
Dr. Diane Lovell, MD
Davis, CA · No drug or device payments recorded (2025) · (530) 756-1450
Dr. John Ling, MD
Davis, CA · $70 in drug and device payments (2025) · (530) 756-5807
Dr. Kiran Jain, M.D.
Davis, CA · No drug or device payments recorded (2025) · (952) 595-1100

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

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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.