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 57 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. David Nakamura, M.D.Folsom, CA 956301023244498
  2. Glenn Nakazawa, MDSanta Clara, CA 950511780761635
  3. Allen Nalbandian, M.D.Escondido, CA 920251619938099
  4. Leelakrishna Nallamshetty, M.D.El Segundo, CA 902451427197060
  5. Gail Nalls, M.D.Los Angeles, CA 900571770592768
  6. David Nam, MDLos Angeles, CA 900271760184782
  7. Jerry Nam, MDRiverside, CA 925011972565000
  8. Meera Namireddy, MDSan Diego, CA 921031417576406
  9. Sujal Nanavati, M.D.San Francisco, CA 941431326077496
  10. Timothy Naney, DOLoma Linda, CA 923501962865303
  11. Kevin NapitupuluLoma Linda, CA 923541538629068
  12. Clay Napper, M.D.San Mateo, CA 944011053352815
  13. Jyoti NarayanswamiSan Francisco, CA 941431669932463
  14. Lorenzo NardoSacramento, CA 958171982049573
  15. Jared Narvid, M.D.San Francisco, CA 941101023205879
  16. Kevin Nash, M.DChico, CA 959261811950827
  17. Hristina Natcheva, M.D.El Segundo, CA 902451184942286
  18. Ragu Nathan, MDStanford, CA 943051467413344
  19. Arthur Nathanson, M.D.Salinas, CA 939011922062587
  20. David Naugle, MDLa Jolla, CA 920371922079243
  21. Ryan Navarro, M.D.San Francisco, CA 941431083009518
  22. Shannon Navarro, MD, MPHLos Angeles, CA 900331174883052
  23. Nita Nayak, MDStanford, CA 943051881986297
  24. Sundeep Nayak, M.D.San Leandro, CA 945771174567655
  25. Rahul Nayyar, M.D., MBAVictorville, CA 923951740507342
  26. Nahid Nazarian, M.D.Beverly Hills, CA 902101821036526
  27. Sohrab Nazertehrani, MDOrange, CA 928681760878037
  28. Shaghayegh Nealon, M.D.Sacramento, CA 958161497974422
  29. Alireza Negahban, M.D.Los Angeles, CA 900891174799860
  30. Howard Nelson, MDSanta Cruz, CA 950651295749737
  31. Fadi Nemeh, MDLos Angeles, CA 900951750815171
  32. Matthew Nesper, MDOakland, CA 946091851372528
  33. Christian Neumann, MDIndio, CA 922011649270596
  34. Dustin Newell, MDSanta Cruz, CA 950651215253349
  35. Brian Ng, MDValencia, CA 913551558868265
  36. Qui Cheun Ng, DOOrange, CA 928681528697257
  37. Quinn Ng, MDSacramento, CA 958171396248191
  38. Steven Ngai, M.D.Torrance, CA 905021093028771
  39. Y-Lan Nghiem Ho, M.D.Salinas, CA 939011871557900
  40. Bay Ngo, M.D.Whittier, CA 906051427114602
  41. Hao Ngo, MDFullerton, CA 928351013090117
  42. Michael Ngo, M.D.Los Angeles, CA 900271235316480
  43. Tam Ngo, MDSanta Ana, CA 927031558308106
  44. Tri Ngo, M.D.Orange, CA 928681073804837
  45. Alexander Nguyen, MDMenlo Park, CA 940251881868396
  46. Andrew NguyenWest Hollywood, CA 900481629605720
  47. Ann Nguyen, MDLa Jolla, CA 920371023079951
  48. Bao Nguyen, MDSan Jose, CA 951221982641916
  49. Binh Nguyen, MDNewport Beach, CA 926631083679807
  50. Chanh Nguyen, M.D.Fresno, CA 937201992901250

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.