NPPES file of Aug 9, 2026

Diagnostic Radiology Physician in California

4,500 NPPES records list diagnostic radiology physician with a practice address in California, 12 per 100,000 residents, the 31st highest rate of 51. Los Angeles and San Diego have the most; each record links to the provider's NPI and the California license search. Page 76 of 90.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 2085R0202X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Los Angeles has the most, 594

  1. Los Angeles594
  2. San Diego373
  3. San Francisco336
  4. Stanford235
  5. Sacramento226

Diagnostic Radiology Physician records in California

  1. Jason SongSan Francisco, CA 941171376988782
  2. Ok Kyu Song, MDStanford, CA 943051568275931
  3. Jung Song-Lee, M.DLos Banos, CA 936351144301276
  4. David Sonne, MDOakland, CA 946111295791804
  5. Ajay Sood, MDModesto, CA 953561639113681
  6. Marina Soosaipillai, M.D.Sacramento, CA 958161528171345
  7. Steven Sorenson, M.D.Redlands, CA 923541275585507
  8. Andrew Soroka, MDSan Francisco, CA 941431659891323
  9. Meyer Soroudi, M.D.Huntington Beach, CA 926471417964362
  10. Robert Sostrin, M.D.Torrance, CA 905051124243647
  11. Byron Sotomayor, MDArcadia, CA 910071497780456
  12. Maren Sowerby, MDFullerton, CA 928351013013630
  13. John Sowinski, MDSan Francisco, CA 941431881190627
  14. Jill Spadia, MDVallejo, CA 945891356413108
  15. George Spanos, M.D.Los Angeles, CA 900331871777284
  16. Chelsea Sparks, MDSan Diego, CA 921031366901662
  17. Luke SpearLoma Linda, CA 923541699264515
  18. Elisabeth Specht, MDWalnut Creek, CA 945961083792170
  19. Paul Speece, M.D.Fresno, CA 937201932171733
  20. Nathan Spengler, MDSan Diego, CA 921031992919666
  21. Susan Spieller, MDRedlands, CA 923731528005188
  22. Gary Spoto, M.D.San Diego, CA 921031659332062
  23. Timothy Sprague, M.D.Mission Hills, CA 913451487797122
  24. David Spring, MDOakland, CA 946111588743629
  25. Shravan SridharSan Francisco, CA 941431972967370
  26. Sreevathsan Sridhar, M.D.Los Angeles, CA 900271194045070
  27. Shanmukha SrinivasLa Jolla, CA 920931952983488
  28. Ramya Srinivasan, M.D.Fresno, CA 937011558665588
  29. Ganesan Sriram, MDHayward, CA 945451407934268
  30. Priti Srivastava, M.D.Fresno, CA 937201447368048
  31. Daniel Stahl, DOLos Angeles, CA 900951043714017
  32. Michael Staloch, MDSan Francisco, CA 941431902831449
  33. Edgar Stambuk, MDFullerton, CA 928351194808295
  34. Todd Standley, MDEl Segundo, CA 902451275644510
  35. Steve Stanford, M.D.Los Angeles, CA 900331225394083
  36. Grant Stanley, MDSanta Clara, CA 950511538247028
  37. Mark Stanley, M.D.San Diego, CA 921341093785594
  38. James Stapakis, MDWildomar, CA 925951376519462
  39. Paul Stark, M.D.La Jolla, CA 920931780617258
  40. Christopher Starr, MD/PHDDowney, CA 902421144510652
  41. Vanessa Starr, M.D.San Jose, CA 951281376778670
  42. Sarah Stassi, MDSanta Rosa, CA 954031558521559
  43. Anthony Stauffer, MDNewport Beach, CA 926631083695720
  44. David Staunton, M.D.Salinas, CA 939011679537492
  45. Michael Stecker, M.D.Los Angeles, CA 900641619213402
  46. Eugene Stecz, MDSan Bernadino, CA 924041346240819
  47. John Stef, MDSanta Barbara, CA 931051104871144
  48. Richard Steffens, M.D.Red Bluff, CA 960801225058472
  49. Mark Stein, M.D.Santa Monica, CA 904031346644887
  50. Mark Stein, M.D.Santa Ana, CA 927051265478564

Source: CMS NPPES, primary taxonomy 2085R0202X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 31 of 51 per resident

  1. New Jersey12
  2. Arizona12
  3. Hawaii12
  4. California12
  5. South Dakota12
  6. Indiana11
  7. 50 states and D.C.13

Source: CMS NPPES, primary taxonomy 2085R0202X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

73.7% of these records appear in a Medicare file, against 73.1% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. California73.7%
  2. United States73.1%

Diagnostic Radiology Physician records in California, measured

  • In a Medicare file3,317 of 4,500 · 73.7% here, 73.1% nationally
  • In the CMS Doctors and Clinicians file3,130 · 69.6% here, 68.5% nationally
  • Not updated in five years or more2,695 · 59.9% here, 56.9% nationally
  • Median graduation year2004 · the 3,130 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2085R0202X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

4,500 NPPES records list diagnostic radiology physician (2085R0202X) as their primary taxonomy with a practice address in California: 12 per 100,000 residents against 13 nationally (50 states and D.C.). Los Angeles has 594 of them (13%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. New York3,146
  2. Texas3,124
  3. Florida2,761
  4. Pennsylvania2,199

States with a similar rate per 100,000

  1. Hawaii11.6
  2. South Dakota11.5
  3. Arizona11.7
  4. Indiana11.4

The largest states

  1. New York3,146
  2. Texas3,124
  3. Florida2,761
  4. Pennsylvania2,199
  5. Illinois1,874

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.