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. Paulo Serapio, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-5720
Dr. Phien Tang
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 358-2100
Dr. Ryan Coleman, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 994-3672
Dr. Sean Hayes, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-4216
Dr. Stephanie Lee-felker, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Suzanne Palmer, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Tanya Tivorsak, M.D.
West Hollywood, CA · $96 in drug and device payments (2025) · Telehealth · (310) 423-6500
Dr. Theodore Hagens, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-3095
Dr. Thomas Learch, M.D.
West Hollywood, CA · $247 in drug and device payments (2025) · (310) 423-6500
Dr. Trevor Carle, MD
West Hollywood, CA · $465 in drug and device payments (2025) · Telehealth · (310) 423-6500
Dr. Vikram Wadhwa, MD
West Hollywood, CA · $823 in drug and device payments (2025) · (310) 423-6500
Dr. William Mallon, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Yuxuan Lin, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-6500
Dr. Zara Wadood, M.D.
West Hollywood, CA · $108 in drug and device payments (2025) · (310) 423-6500
Dr. Michael Edelstein, M.D.
Westlake Village, CA · No drug or device payments recorded (2025) · (818) 707-9778
Dr. Phillip Tirman, M.D.
Westlake Village, CA · No drug or device payments recorded (2025) · (310) 378-0547
Dr. Amish Patel, MD
Whittier, CA · $338 in drug and device payments (2025) · (562) 907-1755
Dr. Anuj Rajput, M.D.
Whittier, CA · No drug or device payments recorded (2025) · (562) 698-0811
Dr. Bay Ngo, M.D.
Whittier, CA · No drug or device payments recorded (2025) · (562) 907-1660
Dr. Brian Yue, M.D.
Whittier, CA · No drug or device payments recorded (2025) · (562) 698-0811
Dr. Charles Hughes, M.D.
Whittier, CA · $1,679 in drug and device payments (2025) · Telehealth · (562) 698-0811
Dr. Christina Lee, M.D.
Whittier, CA · No drug or device payments recorded (2025) · (562) 698-0811
Dr. Daniel Saket, MD
Whittier, CA · $112 in drug and device payments (2025) · (562) 698-0811
Dr. Dennis Boparai, MD
Whittier, CA · No drug or device payments recorded (2025) · (562) 698-0811
Dr. Jagdish Patel, MD
Whittier, CA · No drug or device payments recorded (2025) · (562) 698-0811
Dr. Joel Garris, MD
Whittier, CA · No drug or device payments recorded (2025) · (562) 698-0811
Dr. Joseph Park, MD
Whittier, CA · $169 in drug and device payments (2025) · Telehealth · (562) 698-0811
Dr. Linda Hwa, M.D.
Whittier, CA · No drug or device payments recorded (2025) · (562) 789-9770
Dr. Marvin Rice, MD
Whittier, CA · No drug or device payments recorded (2025) · (562) 464-4717
Dr. Maximino Basco, M.D.
Whittier, CA · No drug or device payments recorded (2025) · (562) 907-1660
Dr. Michael Da Rosa, MD
Whittier, CA · No drug or device payments recorded (2025) · (562) 698-0811
Dr. Paul O'connor, M.D.
Whittier, CA · $3,664 in drug and device payments (2025) · Telehealth · (562) 698-0811
Dr. Robert Kleinman, MD
Whittier, CA · No drug or device payments recorded (2025) · (562) 698-0811
Dr. William Shanahan, MD
Whittier, CA · No drug or device payments recorded (2025) · (562) 698-0811
Dr. Zareh Ounjian, MD
Whittier, CA · No drug or device payments recorded (2025) · (562) 698-0811
Dr. Brian Sims, MD
Wildomar, CA · No drug or device payments recorded (2025) · (951) 600-3811
Dr. Christopher Toensing, M.D.
Wildomar, CA · No drug or device payments recorded (2025) · (951) 677-1111
Dr. David Lawson, M.D.
Wildomar, CA · No drug or device payments recorded (2025) · (951) 600-3811
Dr. David Scafidi, MD
Wildomar, CA · No drug or device payments recorded (2025) · (951) 600-3811
Dr. James Stapakis, MD
Wildomar, CA · No drug or device payments recorded (2025) · (951) 600-3811
Dr. John Kim, MD
Wildomar, CA · $20 in drug and device payments (2025) · (951) 600-3811
Dr. Kenneth Chon, M.D.
Wildomar, CA · No drug or device payments recorded (2025) · (951) 600-3811
Dr. Philip Simmons, MD
Wildomar, CA · $107 in drug and device payments (2025) · (951) 600-3811
Dr. Jonathan Travis, M.D.
Willits, CA · No drug or device payments recorded (2025) · (707) 456-3093
Dr. Julie Moyers, MD
Willits, CA · No drug or device payments recorded (2025) · (707) 456-3093
Dr. Eric Mitchel, MD
Woodland, CA · No drug or device payments recorded (2025) · (530) 666-1631
Dr. Jeffrey Heffernon, MD
Woodland, CA · No drug or device payments recorded (2025) · (530) 669-2800
Dr. Faranak Sadri Tafazoli, M.D.
Woodland Hills, CA · No drug or device payments recorded (2025) · (208) 416-2932
Dr. Muhammad Ali, M.D.
Woodland Hills, CA · No drug or device payments recorded (2025) · (818) 719-3707
Dr. Joseph Willis, M.D.
Yorba Linda, CA · No drug or device payments recorded (2025) · (714) 701-9560

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.