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 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. Wilson Wong, MDArcadia, CA · No drug or device payments recorded (2025) ·
(626) 898-8610 Dr. Wesley Root, MDArcata, CA · No drug or device payments recorded (2025) ·
(707) 825-4972 Dr. Edward Deleonardis, MDArroyo Grande, CA · No drug or device payments recorded (2025) ·
(805) 489-4261 Dr. Richard Lasiewski, D.O.Arroyo Grande, CA · No drug or device payments recorded (2025) ·
(805) 481-5356 Dr. Robert Kvalstad, MDArroyo Grande, CA · No drug or device payments recorded (2025) ·
(805) 473-7675 Dr. Ruth Pick, M. D.Arroyo Grande, CA · No drug or device payments recorded (2025) ·
(805) 489-0380 Dr. William Ashley, MDArroyo Grande, CA · No drug or device payments recorded (2025) ·
(805) 473-7676 Dr. Eric Smith, M.D.Atherton, CA · $294 in drug and device payments (2025) ·
(650) 364-3080 Dr. Jana Crain, M.D.Atherton, CA · No drug or device payments recorded (2025) ·
(650) 364-3080 Dr. Kenneth Krone, M.D.Avila Beach, CA · No drug or device payments recorded (2025) ·
(805) 627-1713 Dr. Ali Esmaili, MDAzusa, CA · No drug or device payments recorded (2025) ·
(805) 236-6623 Dr. Aida Karahmet, MDBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 325-6800 Dr. Alan Mortezaie, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 326-9600 Dr. Arsalan Siddiqui, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(951) 550-2516 Dr. Bahram Raofi, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 326-2218 Dr. Bernard Maristany, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 395-3272 Dr. David Schale, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 326-9600 Dr. David Suadi, DOBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 631-8000 Dr. David Yuan, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 326-9600 Dr. Donald Fitzgerald, MDBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 633-5000 Dr. Eugene Roos, DOBakersfield, CA · No drug or device payments recorded (2025) ·
(949) 326-2334 Dr. Gabriel Gelves, DOBakersfield, CA · $42 in drug and device payments (2025) ·
(661) 631-8000 Dr. Gino Tagoylo, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 326-9600 Dr. Girish Patel, MDBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 325-6800 Dr. Godofredo Miranda, MDBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 325-6800 Dr. Irene Dansby, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 633-5000 Dr. Isaac Bornstein, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 326-9600 Dr. James Ching, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 326-2532 Dr. James Cusator, M.DBakersfield, CA · $80 in drug and device payments (2025) ·
(661) 633-5000 Dr. James Nichols, MDBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 324-6588 Dr. Jamshid Jamshidian, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 326-2218 Dr. John Gundzik, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 326-9600 Dr. Johns Liu, M.D.Bakersfield, CA · $27 in drug and device payments (2025) ·
(661) 326-9600 Dr. Krishna Kylasa, MDBakersfield, CA · $165 in drug and device payments (2025) ·
(661) 633-5000 Dr. Leonard Tyminski, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 326-9600 Dr. Levi Dansby, M.D.Bakersfield, CA · $18 in drug and device payments (2025) ·
(661) 599-3169 Dr. Lisa Dabanian, D.O.Bakersfield, CA · $29 in drug and device payments (2025) ·
(661) 588-7866 Dr. Lorraine Ash, D.O.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 633-5000 Dr. Mark Williams, MDBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 325-6800 Dr. Martha Wiedman, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 325-6800 Dr. Michael Wells, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 326-9600 Dr. Mohammad Naheedy, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 326-2334 Dr. Nanci Mercer, MDBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 663-6429 Dr. Nicolas Andrews, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 633-5000 Dr. Parameshwari Baladandapani, MDBakersfield, CA · No drug or device payments recorded (2025) ·
(646) 470-6611 Dr. Rachel Brock, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 395-3272 Dr. Robert Port, MDBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 633-5000 Dr. Stephen Denaro, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 326-9600 Dr. Steven Wang, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(877) 524-7373 Dr. Tony Deeths, MDBakersfield, CA · No drug or device payments recorded (2025) ·
(661) 325-6800 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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