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 3 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. Nabil Abudayeh, MDCastro Valley, CA 945461699724484
  2. Hisham Abukamleh, MDApple Valley, CA 923071144689647
  3. Rebecca Abundis, D.OMonterey, CA 939401144227372
  4. Isaac Abusleme, M.D.Los Angeles, CA 900271891109468
  5. Joel Acab, MDWalnut Creek, CA 945981518405661
  6. Mauricio Acevedo, MDBaldwin Park, CA 917061659442614
  7. Rigo AcevedoSacramento, CA 958171225616006
  8. Pedro Aceves-Casillas, M.D.San Francisco, CA 941171144252396
  9. Latha Achanta, MD MPHLa Verne, CA 917501285893966
  10. Jaishree Acharya, M.D.Union City, CA 945871053334920
  11. Jack Ackerman, DOSan Jose, CA 951161780794107
  12. Kenneth Ackerman, MDPanorama City, CA 914021568521185
  13. Mark Ackerman, MDLos Angeles, CA 900951144225046
  14. Amos Acoff, M.D.Los Angeles, CA 900151386687051
  15. Danielle AcostaSan Jose, CA 951281063738110
  16. Walter Acuna, MDOakland, CA 946111972655108
  17. Meredith AdamoSan Francisco, CA 941021962906941
  18. John Adams, D.O.Long Beach, CA 908061801852900
  19. Kathryn Adams, M.D.San Diego, CA 921011588947196
  20. Nahera Adams, M.D.Modesto, CA 953501972913788
  21. Nancy Adams, M.D.Oakland, CA 946121922543149
  22. Isaac Adatto, M.D.Encino, CA 914361437263845
  23. Jane Addagatla, MDMcClellan Park, CA 956521073596581
  24. Sindhu Addepalli, MDSacramento, CA 958171306405501
  25. Moujidin Adebayo, MDBakersfield, CA 933061003443862
  26. Christine Adekayode, DOCorona, CA 928791124696331
  27. Angela Adelman, M.D.Burbank, CA 915051548262017
  28. Daniel Adelman, M.D.San Francisco, CA 941431922041821
  29. Tinuola Ademola, MDLos Altos, CA 940221437472974
  30. Adebusola AdesinaVallejo, CA 945891386176139
  31. Virginia Adewole, MDLos Angeles, CA 900591639512239
  32. Johnson Adeyanju, M.D.Concord, CA 945201467403147
  33. Mogbonjubola Adeyemo, M.D.Hemet, CA 925431538218300
  34. Mopelola Adeyemo, M.D.Los Angeles, CA 900951457731572
  35. Afshin Adhami, MDEl Monte, CA 917311104991686
  36. Namrata Adhikari, MDVisalia, CA 932911174135214
  37. Pragyan Adhikari, MDFolsom, CA 956301447836432
  38. Rishav Adhikari, MDStanford, CA 943051215529680
  39. Aadhar Adhlakha, M.D.Fresno, CA 937211487091575
  40. Abhijit Adhye, M.D.Napa, CA 945581992763205
  41. Anupam Aditi, M.D.Daly City, CA 940151407084494
  42. Amanda Adkins, M.D.Fairfield, CA 945341568635704
  43. Jessica Adkins, M.D.Ventura, CA 930031194968362
  44. Allison Adler, MD.Santa Clarita, CA 913501598080376
  45. Fredric Adler, MDSylmar, CA 913421356376735
  46. Joshua Adler, MDSan Francisco, CA 941431194781351
  47. Paul Adler, M.D.San Francisco, CA 941151568889772
  48. Sam Adllirad, DOEscondido, CA 920291770287583
  49. Sweetheart Ador-Dionisio, M.D.San Jose, CA 951191740507367
  50. Mark Adrian, M.D.La Jolla, CA 920371003879438

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.