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 58 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. Christopher Nguyen, M.D.Moreno Valley, CA 925551497173587
  2. Christopher NguyenSanta Clara, CA 950511629497813
  3. Danh Nguyen, MDRiverside, CA 925061003999103
  4. Duke Nguyen, M.D.Santa Ana, CA 927051700822962
  5. Edward Nguyen, MDLos Angeles, CA 900331700304664
  6. Emilie Nguyen, M.D.Los Angeles, CA 900951447614748
  7. Gerard Nguyen, M.D.Newport Beach, CA 926631982946281
  8. Giang Nguyen, MDSanta Barbara, CA 931051831107911
  9. Huan Nguyen, M.D.Los Angeles, CA 900331447694245
  10. Huy Nguyen, M.D.San Francisco, CA 941151609194851
  11. Ivy Nguyen, DOSan Francisco, CA 941101831695584
  12. Janet Nguyen, M.D.San Francisco, CA 941431891038436
  13. John Nguyen, M.D.San Diego, CA 921311952514796
  14. John Nguyen, M.D.Sacramento, CA 958161679958953
  15. Josephine Nguyen, MDRancho Mirage, CA 922701184781114
  16. Kim Nguyen, M.D.Santa Monica, CA 904041689628331
  17. Michael Nguyen, MDLos Angeles, CA 900951093930612
  18. Michael Nguyen, M.D.Rolling Hills Estates, CA 902741710055074
  19. Michelle Nguyen, MDStanford, CA 943051205049277
  20. Minh Nguyen, M.D.Sacramento, CA 958161871692558
  21. Quoc-Han NguyenModesto, CA 953501013476878
  22. Stephanie Nguyen, M.D.San Francisco, CA 941431528638046
  23. Tan Nguyen, M.D.Anaheim, CA 928071053668608
  24. Tan Nguyen, MDSacramento, CA 958231932287679
  25. Thanh Huong T Nguyen, MDOrange, CA 928681740360916
  26. Thomas Nguyen, M.D.Santa Cruz, CA 950621588828719
  27. Thong H Nguyen, MDOrange, CA 928681194805366
  28. Tom Nguyen, M.D.Sacramento, CA 958251457338816
  29. Trinh NguyenRiverside, CA 925011568816858
  30. Van Khanh NguyenRancho Cucamonga, CA 917301902078942
  31. Vananh Nguyen, MDPlacentia, CA 928701447376785
  32. Vicky Nguyen, M.D.San Francisco, CA 941431417277591
  33. Vinh Nguyen, M.D.Newport Beach, CA 926631003077256
  34. Michael Nguyentat, MDStanford, CA 943051427586841
  35. Jason NiLos Angeles, CA 900951336726249
  36. Clinton Nichols, MDSan Diego, CA 921231750355657
  37. James Nichols, MDBakersfield, CA 933011871605659
  38. Andrew Nicks, MDNapa, CA 945581326014820
  39. Patricia Niemeyer, M.D.Grass Valley, CA 959451548316565
  40. Hannah Nien, M.D.Torrance, CA 905031417183203
  41. Miguel Nieves, M.D.Carmichael, CA 956081679505333
  42. Myles Nightingale, MDStanford, CA 943051619469418
  43. Ajit Nijjar, M.D.Modesto, CA 953501669412060
  44. Sohn NijorSan Diego, CA 921031891374427
  45. Arian Nikpour, MD, MPHSacramento, CA 958171205279726
  46. Soheil Niku, M.D.San Diego, CA 921301003985177
  47. Matilde Nino-Murcia, M. D.Palo Alto, CA 943041023109733
  48. Nasiem Niroumand, M.D.Los Angeles, CA 900331124461892
  49. Lucas Nishioka, MDTorrance, CA 905031467434001
  50. Bruce Nixon, M.D.Fremont, CA 945381700840238

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.