NPPES file of Aug 9, 2026

Internal Medicine Physician in California

17,696 NPPES records list internal medicine physician with a practice address in California, 45 per 100,000 residents, the 17th highest rate of 51. Los Angeles and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 217 of 354.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207R00000X · 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, 1,423

  1. Los Angeles1,423
  2. San Francisco1,318
  3. San Diego961
  4. Sacramento601
  5. Oakland432

Internal Medicine Physician records in California

  1. Andrew Nadler, MDFremont, CA 945381215012984
  2. Joseph Nadler, MDPalo Alto, CA 943041558867002
  3. Paul Nadler, MDSan Francisco, CA 941431336193663
  4. Charbel Nadra, MDFairfield, CA 945341700974565
  5. Farzana Naeem, MDFresno, CA 937201104904911
  6. Arash Nafisi, M.D.Valencia, CA 913551831478122
  7. Sami Nafoosi, MDLancaster, CA 935341164713244
  8. Janet Nagamine, MDSanta Clara, CA 950511982781837
  9. Vicki Nagano, MDSacramento, CA 958231972655199
  10. Dinesh Nagar, M.D.Fairfield, CA 945341740227297
  11. Mythili Nagaraj, M.D.Fullerton, CA 928331225122674
  12. Deepti Nagaraja Rao, MDFremont, CA 945381770159121
  13. Sherene Nagarajah, MDFremont, CA 945381710917539
  14. Babitha Nagarajan, M.DSan Jose, CA 951281720185812
  15. Suja Nagarajan, M.D.Redwood City, CA 940631093837486
  16. Vidya Nagaraju, M.D.Santa Cruz, CA 950651790806081
  17. Sudesh Nagavalli, MDHanford, CA 932301780629691
  18. Casey Nagel, M.D.Beverly Hills, CA 902121750743878
  19. Dennis Nagel, MDFontana, CA 923351427125327
  20. James Nagel, MDChico, CA 959731104822410
  21. Naj NagendranThousand Oaks, CA 913621871810820
  22. Pejman Naghdechi, MDLong Beach, CA 908131952607715
  23. Sheila Naghshineh, M.D.Los Angeles, CA 900951720229917
  24. David Nagle, MDSan Francisco, CA 941431538516141
  25. Essam Nagori, D.O.Colton, CA 923241285165076
  26. Nirmala Nagothu, MDTulare, CA 932741700448156
  27. Mandeep Nagra, MB,BSSanta Rosa, CA 954041851325914
  28. Omar Nagy, DOOrange, CA 928681285194092
  29. David Nah, DOLaguna Hills, CA 926531477847127
  30. Gursharan Nahl, MDStockton, CA 952191437117322
  31. Jaganath Naidu, MDMission Hills, CA 913451447283924
  32. Konidala Naidu, MDLaguna Hills, CA 926531265512180
  33. Uladzislau Naidzionak, M.D.San Diego, CA 921231023246212
  34. Ishan Naik, MDWest Hollywood, CA 900481457980500
  35. Mrinmayee Naik, M.D.Stockton, CA 952041639559081
  36. Khin Naing, M.D.Victorville, CA 923951043641798
  37. Archana Nair, M.D.,Union City, CA 945871386834893
  38. Archana Nair, M.D.Pleasanton, CA 945881487094041
  39. Geethu Nair, MDSan Francisco, CA 941431851896575
  40. Pooja Nair, MBBSLos Gatos, CA 950321881155752
  41. Varsha Nair, M.D.Mountain View, CA 940401295032183
  42. Vishnu Nair, MDStanford, CA 943051982281465
  43. Farhad NajafiIrvine, CA 926201447693742
  44. Parvaneh Najafi, M.D.San Diego, CA 921541275771974
  45. Rachel Najafi, M.D.Palo Alto, CA 943041467728048
  46. Fauzi Najar, MDSan Diego, CA 921541689166977
  47. Israa Najeeb, MD, M.M.B.CHOceanside, CA 920561265182356
  48. Firas Naji, D.O.Irvine, CA 926141578883997
  49. Mahtab Naji, MDSan Clemente, CA 926731558949693
  50. Noor Najim, MDLoma Linda, CA 923541235874884

Source: CMS NPPES, primary taxonomy 207R00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 17 of 51 per resident

  1. New Jersey50
  2. New Hampshire48
  3. Minnesota46
  4. California45
  5. Florida45
  6. Ohio45
  7. 50 states and D.C.44

Source: CMS NPPES, primary taxonomy 207R00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

79.5% of these records appear in a Medicare file, against 78.7% 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. California79.5%
  2. United States78.7%

Internal Medicine Physician records in California, measured

  • In a Medicare file14,068 of 17,696 · 79.5% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file11,077 · 62.6% here, 61.4% nationally
  • Not updated in five years or more10,832 · 61.2% here, 55.4% nationally
  • Median graduation year2004 · the 11,065 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207R00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

17,696 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in California: 45 per 100,000 residents against 44 nationally (50 states and D.C.). Los Angeles has 1,423 of them (8%).

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 York12,067
  2. Florida10,151
  3. Texas9,175
  4. Pennsylvania7,300

States with a similar rate per 100,000

  1. Minnesota45.9
  2. Ohio44.8
  3. New Hampshire48.0
  4. Maine42.8

The largest states

  1. New York12,067
  2. Florida10,151
  3. Texas9,175
  4. Pennsylvania7,300
  5. Illinois7,238

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.