Nuclear Imaging & Therapy Specialists in California
Data updated monthly · Last refresh October 2026
28 Nuclear Imaging & Therapy providers practice in California, including 2 (7%) offering telehealth. The largest concentration is in San Diego. 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.
28providers
2telehealth
San Diegotop city
Nuclear Imaging & Therapy by city in California
Choose a city to see providers there.
Where Nuclear Imaging & Therapy Specialists in California practice
From CMS Medicare enrollment records covering 8 of the 28 providers listed here (29%). Providers who do not bill Medicare are not included in these figures.
Largest practice groups
| Group (as registered with Medicare) | Nuclear Imaging & Therapy Specialists | All clinicians in group | Main city |
| Permanente Medical Group Inc. | 2 | 10,928 | Fresno |
| Sutter Valley Medical Foundation | 2 | 2,473 | Sacramento |
| Beverly Radiology Medical Group III | 2 | 327 | Apple Valley |
| Desert Advanced Imaging Medical Center | 2 | 209 | Palm Springs |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Nuclear Imaging & Therapy 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. Ahmed Zaza, M.D.Bakersfield, CA · No drug or device payments recorded (2025) ·
(661) 665-0090 Dr. Thomas Budinger, M.D.Berkeley, CA · No drug or device payments recorded (2025) ·
(510) 847-2158 Dr. Franco Policaro, M.D.El Segundo, CA · No drug or device payments recorded (2025) ·
(281) 766-0959 Dr. Evelyn Musni, M.D.Fremont, CA · No drug or device payments recorded (2025) ·
(510) 790-2202 Dr. Alex Heglin, DOFresno, CA · No drug or device payments recorded (2025) ·
(559) 447-2600 Dr. Daniel Patrick, MDFresno, CA · No drug or device payments recorded (2025) ·
(559) 450-3109 Dr. Daniel Stobbe, MD, FACNPFresno, CA · No drug or device payments recorded (2025) ·
(559) 449-2640 Dr. Ryan Reddy, M.D.Irvine, CA · $78 in drug and device payments (2025) · Telehealth ·
(877) 422-9477 Dr. John Linfoot, M. D.Lafayette, CA · No drug or device payments recorded (2025) ·
(925) 962-6988 Dr. Michael Siegel, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 756-2906 Dr. Sing-yung Wu, M.D.Long Beach, CA · No drug or device payments recorded (2025) ·
(562) 826-8000 Dr. Jeremie Calais, MDLos Angeles, CA · $39,012 in drug and device payments (2025) ·
(310) 794-1005 Dr. Jocelyn Espiritu, M.D.Modesto, CA · No drug or device payments recorded (2025) ·
(209) 576-3735 Dr. Maria Guevara, MDNorth Hollywood, CA · $695 in drug and device payments (2025) ·
(310) 386-4879 Dr. Shelby Miller, M.D.Oakland, CA · No drug or device payments recorded (2025) ·
(510) 437-4744 Dr. John White, M.D.Rancho Palos Verdes, CA · No drug or device payments recorded (2025) ·
(310) 833-3790 Dr. Fabio Almeida, M.D.Roseville, CA · No drug or device payments recorded (2025) ·
(916) 783-8900 Dr. Frederick Weiland, M.D.Roseville, CA · No drug or device payments recorded (2025) · Telehealth ·
(916) 781-1291 Dr. David Rossman, M.D.San Diego, CA · No drug or device payments recorded (2025) ·
(858) 569-7800 Dr. Eugene Silverman, MDSan Diego, CA · $20 in drug and device payments (2025) ·
(619) 532-6460 Dr. Richard Cole, M.D.San Diego, CA · No drug or device payments recorded (2025) ·
(619) 528-5141 Dr. Charles Moser, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 621-4369 Dr. Lazaro NunezSan Francisco, CA · No drug or device payments recorded (2025) ·
(305) 942-7139 Dr. Holly Marciniak Thompson, M.D.Santa Clara, CA · $304 in drug and device payments (2025) ·
(408) 851-5600 Dr. Francis Isidoro, M.D.Stockton, CA · $19 in drug and device payments (2025) ·
(209) 466-2000 Dr. Doina Tanasescu, MDSylmar, CA · No drug or device payments recorded (2025) ·
(818) 364-4094 Dr. Maral Mardiros, M.D.Woodland Hills, CA · No drug or device payments recorded (2025) ·
(818) 719-2922 Common questions
How many Nuclear Imaging & Therapy providers are in California?There are 28 Nuclear Imaging & Therapy providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Nuclear Imaging & Therapy providers in California offer telehealth?Yes. 2 of the 28 Nuclear Imaging & Therapy providers in California (about 7%) report offering telehealth services in CMS data.
Which cities in California have the most Nuclear Imaging & Therapy providers?San Diego (3), Fresno (3), San Francisco (2) have the highest concentration of Nuclear Imaging & Therapy providers in California.
How many Nuclear Imaging & Therapy providers in California received drug or device company payments?7 of 28 Nuclear Imaging & Therapy providers in California (25%) 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.
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