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. Richard Fulton, MDSanta Barbara, CA · No drug or device payments recorded (2025) ·
(805) 682-7984 Dr. Robert Krause, MDSanta Barbara, CA · No drug or device payments recorded (2025) ·
(805) 682-7984 Dr. Robert Maciel, M.D.Santa Barbara, CA · No drug or device payments recorded (2025) ·
(951) 310-7272 Dr. Ryan ChanSanta Barbara, CA · No drug or device payments recorded (2025) ·
(805) 682-7111 Dr. Sean Novak, M.D.Santa Barbara, CA · No drug or device payments recorded (2025) ·
(805) 682-7744 Dr. Spencer Price, MDSanta Barbara, CA · No drug or device payments recorded (2025) ·
(805) 682-7111 Dr. Steven Berrett, MDSanta Barbara, CA · No drug or device payments recorded (2025) ·
(805) 582-7984 Dr. Steven Hartzman, M.D.Santa Barbara, CA · No drug or device payments recorded (2025) ·
(805) 569-7279 Dr. Thomas Daughters, M.D.Santa Barbara, CA · No drug or device payments recorded (2025) ·
(805) 569-7279 Dr. Thu Le, M.D.Santa Barbara, CA · No drug or device payments recorded (2025) ·
(805) 453-0870 Dr. Ulrike Hayward, MDSanta Barbara, CA · No drug or device payments recorded (2025) ·
(805) 682-7984 Dr. William Deruso, MDSanta Barbara, CA · No drug or device payments recorded (2025) ·
(805) 682-7744 Dr. William Theurer, MDSanta Barbara, CA · No drug or device payments recorded (2025) ·
(805) 682-7984 Dr. Winifred Leung, M.D.Santa Barbara, CA · No drug or device payments recorded (2025) ·
(805) 682-7744 Dr. David Tuttle, MDSanta Brabara, CA · No drug or device payments recorded (2025) ·
(805) 682-7744 Dr. Archana Rao, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-4930 Dr. Brian Baker, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Brian KimSanta Clara, CA · No drug or device payments recorded (2025) ·
(650) 400-0531 Dr. Charles Tandler, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 851-4164 Dr. Christopher NguyenSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 769-8928 Dr. Daniel Kanada, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 851-1000 Dr. Eda Dou, M.D.Santa Clara, CA · No drug or device payments recorded (2025) ·
(408) 851-1000 Dr. Glenn Nakazawa, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Grant Stanley, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Ilan Benador-shen, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 554-5020 Dr. Jonathan Mates, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 851-1000 Dr. Kathleen Marini, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Kent Smith, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Kerry Shiraki, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Laura O'donohue, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 851-1000 Dr. Lawnie-lyn Lau, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Michael Reiter, MDSanta Clara, CA · $157 in drug and device payments (2025) ·
(408) 851-1000 Dr. Nitin Athavale, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Olegario Lara, DOSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 851-5067 Dr. Rita Patel Joshi, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Robert Laroque, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Ross Lulu, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Simrunn Girn, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 851-1000 Dr. Sunhee Lee, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. Virginia Weiss, MDSanta Clara, CA · No drug or device payments recorded (2025) ·
(408) 236-6400 Dr. William Mccullough, M.D.Santa Clara, CA · No drug or device payments recorded (2025) ·
(408) 851-5062 Dr. Albert Lu, MDSanta Cruz, CA · No drug or device payments recorded (2025) ·
(831) 458-5521 Dr. Dustin Newell, MDSanta Cruz, CA · $696 in drug and device payments (2025) ·
(831) 476-7711 Dr. Edward Menges, MDSanta Cruz, CA · No drug or device payments recorded (2025) ·
(831) 476-7711 Dr. Eric Wang, MDSanta Cruz, CA · $1,289 in drug and device payments (2025) ·
(831) 476-7711 Dr. Evan Sirc, MDSanta Cruz, CA · $40 in drug and device payments (2025) ·
(831) 476-7711 Dr. Hoang Anh Vo, M.D.Santa Cruz, CA · $419 in drug and device payments (2025) ·
(831) 476-7711 Dr. Howard Nelson, MDSanta Cruz, CA · No drug or device payments recorded (2025) ·
(831) 476-1542 Dr. Jennifer Lin, M.D.Santa Cruz, CA · $32 in drug and device payments (2025) ·
(831) 476-1542 Dr. John Pestaner, MDSanta Cruz, CA · No drug or device payments recorded (2025) ·
(831) 458-5521 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
