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 59 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. Sarah NoblesSan Francisco, CA 941101093179251
  2. Dylan Noblett, MDSan Diego, CA 921031780138404
  3. Erinn Noeth, M.D.Los Angeles, CA 900241336477173
  4. Min Gyu Noh, MDStanford, CA 943051427686955
  5. Michael Noon, M.D.San Diego, CA 921211962454843
  6. John Noonan, MDSan Jose, CA 951281659466068
  7. Azeem Noorani, MDFresno, CA 937201750321683
  8. Abraham Noorbakhsh, MD, MPHSan Diego, CA 921201568826345
  9. Behzad Noorbehesht, M.D.Oxnard, CA 930361093763401
  10. Farnoosh Nooryani, M.D.Los Angeles, CA 900331841209566
  11. David Norman, M.D.San Francisco, CA 941431669414587
  12. Michael Noronha, MDTorrance, CA 905051114003316
  13. Evan Norris, MDWest Hollywood, CA 900481063998078
  14. Jason Norris, MDLos Angeles, CA 900951992334452
  15. Taylor Norris, MDLos Angeles, CA 900951124609276
  16. Sheryl North, M.D.Sylmar, CA 913421932237252
  17. Michael Norton, MDSacramento, CA 958161801893193
  18. Keyvan Nouri, M.D.Walnut Creek, CA 945981184664997
  19. Kourosh Nourisamie, MDLong Beach, CA 908071124000757
  20. Sean Novak, M.D.Santa Barbara, CA 931051013207653
  21. Rajeev Nowrangi, M.D.Loma Linda, CA 923541295198794
  22. Alfred Noyes, MDChico, CA 959261619930096
  23. Jack Noyes, MDSan Francisco, CA 941151730253055
  24. Michael Nussdorfer, MDVisalia, CA 932771740250323
  25. Dawn Nwamuo, MDSan Leandro, CA 945771134309818
  26. Larry O'Connor, MDMartinez, CA 945531497789952
  27. Paul O'Connor, M.D.Whittier, CA 906021740629559
  28. James O'Donohue, MDPalo Alto, CA 943011346326857
  29. Laura O'Donohue, MDSanta Clara, CA 950511841827714
  30. Brian O'Loughlin, M.D.San Diego, CA 921031972709087
  31. Louise O'Shaughnessy, M.D.San Diego, CA 921031285685925
  32. Mary Oboyle, M.D.San Diego, CA 921031568487999
  33. Kathryn Occhipinti, MDRiverside, CA 925071194703819
  34. James OdoneTravis Afb, CA 945351104005172
  35. Steven Oglevie, M.D.Beverly Hills, CA 902101154365310
  36. Andrea Oh, M.D.Los Angeles, CA 900361740417765
  37. Christine Oh, MDWalnut Creek, CA 945961245304559
  38. Hyoung OhMonrovia, CA 910161982090783
  39. Kevin Oh, MDSan Francisco, CA 941091669009221
  40. Noeun Oh, MDSan Diego, CA 921031659693687
  41. Wesley OhOrange, CA 928681538521018
  42. Camiar Ohadi, M.DMontclair, CA 917631063582112
  43. Christopher Oide, MDSacramento, CA 958251609954361
  44. Haydee Ojeda-Fournier, MDLa Jolla, CA 920931871537191
  45. Chukwuemeka Okafor, MDLos Angeles, CA 900951285197905
  46. John Okcuoglu, MDLos Angeles, CA 900311689252827
  47. Anietie Okon, M.D.Placerville, CA 956671568689958
  48. Chukwuemeka Okoro, MDPorter Ranch, CA 913261992202329
  49. Cameron Olsen, MDStanford, CA 943051619590536
  50. Brent Olson, MDOrange, CA 928681427588615

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.