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 67 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. Lawrence Resnick, M.D.Sherman Oaks, CA 914031942269469
  2. Julie Ressler, MDDuarte, CA 910101417903147
  3. Bradley Restel, M.D.Santa Rosa, CA 954031396910097
  4. Tara Retson, PHD, MDSan Diego, CA 921031740643204
  5. Karen Reuss, M.D.Laguna Hills, CA 926531336190354
  6. Robert Reuter, M.D.Los Angeles, CA 900251528279783
  7. James Reveno, MDStanford, CA 943051497881064
  8. David Rex, M. D., PH. D.Los Angeles, CA 900951255520151
  9. George Reyes, M.D.Glendale, CA 912061780741330
  10. Joan Reynolds, M.D.Walnut Creek, CA 945981245276450
  11. John Rhee, M.D.San Francisco, CA 941181558398362
  12. Richard Rhee, M.D.Newport Beach, CA 926631932143559
  13. Sherman Rhee, M.D.Rancho Cucamonga, CA 917301568481042
  14. Wendy Rhoads, M.D.San Diego, CA 921061235119520
  15. Thomas Rhodeman, M.D.Modesto, CA 953501942241336
  16. Marvin Rice, MDWhittier, CA 906061679605224
  17. Anita Rich, M.D.Los Altos, CA 940241104907377
  18. Philip Rich, MDWalnut Creek, CA 945981023003126
  19. Baxter Richardson, MDJackson, CA 956421306109905
  20. Duane Richey, MDMerced, CA 953401548365273
  21. Mark Richey, M.D.Grass Valley, CA 959451407876352
  22. Katherine Richman, MDStanford, CA 943051992898993
  23. Douglas Riehle, MDOakland, CA 946091295720704
  24. Raymond Rieman, MDModesto, CA 953551215960570
  25. Judith Rigby, M.D.Laguna Beach, CA 926511851662118
  26. Michael Rigdon, MDLodi, CA 952401629173935
  27. David Rigual, M.D.Los Angeles, CA 900951588907604
  28. Geoffrey Riley, M.D.Stanford, CA 943051730158825
  29. Steve Rindsberg, M.D.San Diego, CA 921011700899515
  30. Robert Ring, MDPomona, CA 917671538142021
  31. Hans Ringertz, MDStanford, CA 943051598848772
  32. Robert RippnerPomona, CA 917671932127602
  33. Kriti RishiSacramento, CA 958171639639990
  34. Sunny Rishi, MDStanford, CA 943051356967681
  35. David Ritchie, M.D.Sherman Oaks, CA 914231407201916
  36. Emily Ritchie, M.D.Sacramento, CA 958171306008255
  37. Kaleigh Ritchie, DOLos Angeles, CA 900951083176911
  38. Javier Rivera, M.DOakland, CA 946091093030470
  39. Monica RiveraLong Beach, CA 908221992802706
  40. Lucien Rizzo, MDLos Angeles, CA 900951992366579
  41. Michael Rizzo, MDOakland, CA 946111932287638
  42. Geoffrey Ro, MDLos Angeles, CA 900331881198687
  43. Tae Ro, M.D.San Francisco, CA 941431952750739
  44. Donald Roback, MDManhattan Beach, CA 902661467401240
  45. Barry Robbins, M.D.San Jose, CA 951281619913977
  46. Claudette Robbins, MDSylmar, CA 913421326056920
  47. Dustin Roberie, D.O.San Francisco, CA 941431033520655
  48. Andrew Roberts, M.D.San Francisco, CA 941431558636142
  49. Cicely Roberts, M.D.Fresno, CA 937201386661296
  50. Jason Roberts, MDFresno, CA 937201508845579

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.