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 51 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. Muhammad Manzoor, M.D.Stanford, CA 943051619256203
  2. Collin Mar, MDWalnut Creek, CA 945961538247622
  3. Linda Mar, D.O.Sacramento, CA 958161063690360
  4. David Marcus, M.D.Burlingame, CA 940101528014347
  5. Ralph MarcusIrvine, CA 926201346566056
  6. Robert Marcus, MDTorrance, CA 905031700856341
  7. John Mardiat, M.D.Santa Barbara, CA 931051801896675
  8. Julie Marek Bykowski, M.D.San Diego, CA 921031699988667
  9. Theodore Marentis, M.D.Carmichael, CA 956081740424134
  10. Aladin Mariano, M.D.Stanford, CA 943051144584996
  11. Kathleen Marini, MDSanta Clara, CA 950511801968631
  12. Bernard Maristany, M.D.Bakersfield, CA 933091396740999
  13. Lauralyn Markle, M.D.Laguna Hills, CA 926531396744793
  14. Daniel Marks, M.D.Fresno, CA 937101952477994
  15. Robert Marks, M.D.San Diego, CA 921031952389934
  16. Susan Marks, MDSan Francisco, CA 941331801835079
  17. Michael Marrero, M.D.El Segundo, CA 902451346288669
  18. Austin MarshLos Angeles, CA 900251346773850
  19. Joseph Marshall, M.D.Tracy, CA 953761750341483
  20. Brian Marten, M.D.Carmichael, CA 956081821029216
  21. Emily Martin, MDSan Francisco, CA 941431124521190
  22. John Martin, M.D.Modesto, CA 953501669416186
  23. Kendall Martin, M.D.La Jolla, CA 920371912169335
  24. Jay Martinez, MDStanford, CA 943051679100713
  25. Roy Martinez, M.D.Santa Cruz, CA 950651093714511
  26. Lucas Martins, MDLos Angeles, CA 900951174109011
  27. Michael Martinucci, M.D.Oakland, CA 946091932142619
  28. Ashley Maru, M.D.El Segundo, CA 902451942370580
  29. Gabriella Marvizi, M.D.Los Angeles, CA 900951366901142
  30. Howard Marx, MDPasadena, CA 911041356307136
  31. Myron Marx, M.D.San Francisco, CA 941181083657928
  32. Rinat Masamed, MDLos Angeles, CA 900951518153246
  33. Venkat MasarapuBurlingame, CA 940101144724568
  34. Mark Masotto, M.D.Orange, CA 928681033118336
  35. Payam Massaband, MDStanford, CA 943051760678395
  36. Donald Massee, MDRiverside, CA 925011801897731
  37. Raymond Mastrovito, MDSanta Barbara, CA 931051871547976
  38. George Matcuk, M.D.West Hollywood, CA 900481972721751
  39. Jonathan Mates, MDSanta Clara, CA 950511780762880
  40. Edward Math, MDFresno, CA 937201659429603
  41. Sipan Mathevosian, M.D.Los Angeles, CA 900951518499722
  42. Manoj Mathew, M.D.Stanford, CA 943051881076073
  43. Jeannette Mathieu, M.D.San Francisco, CA 941101285169714
  44. Amin Matin, M.D., M.P.H.Oakland, CA 946111003038860
  45. Nader Matloubi, M.DMoreno Valley, CA 925531578770806
  46. Maria Matsumoto, M.D.San Jose, CA 951311609812916
  47. Ian Matsuura, M.D.Santa Monica, CA 904021447200266
  48. Bruce Matthews, M.D.Ventura, CA 930031134283344
  49. Mary Maunglay, M.D.Victorville, CA 923921386909356
  50. Jonathan Maw, DOLos Angeles, CA 900331174184386

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.