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 14 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. Tien Cheng, M.D.Riverside, CA 925071336108695
  2. Li Hsia Cheong, MDOakland, CA 946111407514326
  3. Melvin Cherne, MDMammoth Lakes, CA 935461619962115
  4. Matthew Cherno, M.D.San Bruno, CA 940661740301555
  5. Lawrence Chespak, M.D.Tarzana, CA 913561437198058
  6. Hoiwan CheungOakland, CA 946111861923351
  7. Luke Cheung, M.D.Newport Beach, CA 926631619917259
  8. Alexander Chien, MDPomona, CA 917671255313318
  9. Anne Chin, M.D.Stanford, CA 943051952472615
  10. Cynthia Chin, M.D.San Francisco, CA 941431447292404
  11. David Chin, MDFremont, CA 945381629017140
  12. Don Chin, M.D.Redding, CA 960011316967557
  13. Fredric Chin, M.D.Oakland, CA 946091831181114
  14. Jeremy Chin, M.D.Northridge, CA 913251700229994
  15. James Ching, M.D.Bakersfield, CA 933061083654255
  16. Daryl Chinn, M.D.Sonoma, CA 954761427097286
  17. Michael Chiou, M.D.Mountain View, CA 940401245530419
  18. Pierson Chiou, M.D.South San Francisco, CA 940801013019900
  19. Mamata Chithriki, MDLos Angeles, CA 900481649303603
  20. Le Yu Chiu, MDStanford, CA 943051457812042
  21. Michael Chiu, M.D.Los Angeles, CA 900331396277810
  22. Peter Chiu, MDSacramento, CA 958231942473764
  23. Stephanie Chiu, M.D.North Hollywood, CA 916021275560096
  24. Alexander ChoLoma Linda, CA 923541154855492
  25. Colin ChoMountain View, CA 940401093739336
  26. John Cho, M.D.Torrance, CA 905021699087486
  27. Maximilian Cho, M.D.San Gabriel, CA 917761790049773
  28. Richard Cho, MDOrange, CA 928681376767194
  29. Yosef Chodakiewitz, M.D.Stanford, CA 943051245688076
  30. Eugene Choi, MDLos Angeles, CA 900951336304948
  31. Hyung Won Choi, M.D.Orange, CA 928681659783405
  32. James Choi, MDPanorama City, CA 914021972663151
  33. Kyu Choi, MDVentura, CA 930031316986938
  34. Patrick Choi, MDTorrance, CA 905021235391517
  35. Samuel Choi, M.D.Walnut Creek, CA 945981932135746
  36. Kenneth Chon, M.D.Wildomar, CA 925951306898721
  37. Christopher Chong, M.D.Sacramento, CA 958161851397772
  38. Han Yuan Alice Chong, MDSan Diego, CA 921031457454498
  39. Wook-Chin Chong, MDVentura, CA 930031982656203
  40. Crispina Chong-Han, M.D.Anaheim, CA 928071205813953
  41. Clifton Choo, M.D.Los Angeles, CA 900251225102650
  42. Iris Choo, M.D.Newport Beach, CA 926631871533513
  43. Rajiv Chopra, M.D.Sacramento, CA 958161356469845
  44. Benjamin Chou, MDSan Jose, CA 951281407036239
  45. Eric Chou, M.D.San Diego, CA 921031689627838
  46. Huan Chou, MDStanford, CA 943051285028811
  47. Shinn-Huey ChouSan Francisco, CA 941101710208210
  48. Rishabh Choudhari, MDSacramento, CA 958161154981645
  49. Bernard Chow, M.D.Santa Barbara, CA 931051770582751
  50. Kira Chow, M.DSan Diego, CA 921031538118310

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.