Diagnostic Neuroimaging Specialists (Radiology) in California
Data updated monthly · Last refresh October 2026
49 Diagnostic Neuroimaging (Radiology) providers practice in California, including 1 (2%) offering telehealth. The largest concentration is in Stanford. 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.
49providers
1telehealth
Stanfordtop city
Diagnostic Neuroimaging (Radiology) by city in California
Choose a city to see providers there.
Where Diagnostic Neuroimaging Specialists (Radiology) in California practice
From CMS Medicare enrollment records covering 43 of the 49 providers listed here (88%). Providers who do not bill Medicare are not included in these figures.
2%solo or small practice (under 10 clinicians)
0%mid-size group (10 to 99)
98%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Diagnostic Neuroimaging Specialists (Radiology) | All clinicians in group | Main city |
| Stanford Health Care | 21 | 3,152 | Stanford |
| Sutter Valley Medical Foundation | 6 | 2,473 | Sacramento |
| Permanente Medical Group Inc. | 5 | 10,928 | Sacramento |
| Cedars-Sinai Medical Care Foundation | 3 | 1,684 | Santa Monica |
| Beverly Radiology Medical Group III | 3 | 327 | Toluca Lake |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Diagnostic Neuroimaging Specialists (Radiology) affiliated |
| Stanford Health Care | Stanford | Nonprofit | 5 of 5 | 20 |
| Stanford Health Care Tri-Valley | Pleasanton | Nonprofit | 5 of 5 | 17 |
| Sutter Roseville Medical Center | Roseville | Nonprofit | 5 of 5 | 6 |
| Sutter Medical Center, Sacramento | Sacramento | Nonprofit | 4 of 5 | 4 |
| El Camino Health | Mountain View | Government | 4 of 5 | 4 |
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.
Diagnostic Neuroimaging (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. Ryan Murtagh, MDEl Segundo, CA · $155 in drug and device payments (2025) ·
(813) 253-2721 Dr. Adina Achiriloaie, MDLoma Linda, CA · No drug or device payments recorded (2025) ·
(909) 558-1000 Dr. Farima AzamianLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 825-9111 Dr. Ronald Homer, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 301-6800 Dr. Frank Mangano, M.D.Murrieta, CA · No drug or device payments recorded (2025) ·
(951) 894-4418 Dr. Afshin Karimi, MDOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-8068 Dr. Daniel Chow, MDOrange, CA · $4,080 in drug and device payments (2025) ·
(714) 456-7002 Dr. Li-chang Lien, MDOrange, CA · No drug or device payments recorded (2025) ·
(714) 456-8068 Dr. William Kelly, M.D.Palm Desert, CA · $133 in drug and device payments (2025) ·
(760) 776-8001 Dr. William Wortman, MDPasadena, CA · No drug or device payments recorded (2025) ·
(516) 384-0557 Dr. Harold Keyserling, M.D.Sacramento, CA · No drug or device payments recorded (2025) ·
(916) 878-3495 Dr. Amanda Murphy, M.D.San Diego, CA · No drug or device payments recorded (2025) ·
(858) 554-2669 Dr. Vineet Gorolay, MDSan Francisco, CA · No drug or device payments recorded (2025) ·
(415) 353-2573 Dr. Brij Kapadia, M.D.San Leandro, CA · No drug or device payments recorded (2025) ·
(510) 454-7300 Dr. Kai-yin See, MDSan Leandro, CA · No drug or device payments recorded (2025) ·
(510) 454-1000 Dr. Bernard Gero, M.D.Santa Monica, CA · No drug or device payments recorded (2025) ·
(310) 315-1000 Dr. Bonnie Flannigan, MDSanta Monica, CA · No drug or device payments recorded (2025) ·
(310) 315-1000 Dr. Derek Mcallister, DOSanta Monica, CA · No drug or device payments recorded (2025) ·
(310) 315-1000 Dr. James Murphy, M.D.Santa Monica, CA · $118 in drug and device payments (2025) ·
(310) 315-1000 Dr. Seyed Shahrokni, M.D.Santa Monica, CA · No drug or device payments recorded (2025) ·
(310) 315-1000 Dr. Imelda Ho, MDSouth San Francisco, CA · No drug or device payments recorded (2025) ·
(650) 742-3881 Dr. Abdelkader Mahammedi, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Abhi Jain, DOStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Andrew Chiu, MDStanford, CA · $149 in drug and device payments (2025) ·
(650) 723-4000 Dr. Austin Trinh, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Bryan Lanzman, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Conway Lien, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Dale Jamison, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Eric Tranvinh, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Frank Kuo, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Ghiam Yamin, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Gregory Zaharchuck, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Jeremy Heit, MD, PHDStanford, CA · $50,573 in drug and device payments (2025) · Telehealth ·
(650) 723-4000 Dr. Johannes Decker, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Kimberly Seifert, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Lex Mitchell, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Lotfi Hacein-bey, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Madhavi Duvvuri, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Michael Iv, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Michael Zeineh, MD, PHDStanford, CA · $30 in drug and device payments (2025) ·
(650) 723-4000 Dr. Nancy Fischbein, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Nancy Pham, M.D.Stanford, CA · $70,000 in drug and device payments (2025) ·
(650) 723-4000 Dr. Raag Airan, MDStanford, CA · $30 in drug and device payments (2025) ·
(650) 723-4000 Dr. Ruchir Chaudhari, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Seena Dehkharghani, MDStanford, CA · $3,107 in drug and device payments (2025) ·
(650) 723-4000 Dr. Shweta Kumar, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Syed Hashmi, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Tarik Massoud, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 724-7026 Dr. Wilson Chwang, MD, PHDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Common questions
How many Diagnostic Neuroimaging (Radiology) providers are in California?There are 49 Diagnostic Neuroimaging (Radiology) providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Diagnostic Neuroimaging (Radiology) providers in California offer telehealth?Yes. 1 of the 49 Diagnostic Neuroimaging (Radiology) providers in California (about 2%) report offering telehealth services in CMS data.
Which cities in California have the most Diagnostic Neuroimaging (Radiology) providers?Stanford (28), Santa Monica (5), Orange (3) have the highest concentration of Diagnostic Neuroimaging (Radiology) providers in California.
How many Diagnostic Neuroimaging (Radiology) providers in California received drug or device company payments?10 of 49 Diagnostic Neuroimaging (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 Neuroimaging Specialists (Radiology) in California work in independent practices or large health systems?Among 43 Diagnostic Neuroimaging Specialists (Radiology) in California enrolled in Medicare, 2% bill through a solo or small practice with fewer than 10 clinicians, 0% through a mid-size group of 10 to 99, and 98% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Diagnostic Neuroimaging Specialists (Radiology) in California work at?According to CMS facility affiliation records, the California hospitals where the most Diagnostic Neuroimaging Specialists (Radiology) hold privileges are Stanford Health Care in Stanford; Stanford Health Care Tri-Valley in Pleasanton; Sutter Roseville Medical Center in Roseville.
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