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 245 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. Christine Perry, MDSan Diego, CA 921611588772479
  2. Kelsey Perry, MDSan Francisco, CA 941431639798044
  3. Maria Persianinova, D.O.Sacramento, CA 958231770843500
  4. Juliette PersoniusSacramento, CA 958171245897735
  5. Prinka Perswani, MDSan Bernardino, CA 924041750955175
  6. Daniel Pertschuk, M.D.Solana Beach, CA 920751144656026
  7. Eva Perusquia Frias, MDSalinas, CA 939051811642358
  8. Rick Pesano, M.D.Laguna Beach, CA 926511770561060
  9. Lyn Pestana, MDLos Angeles, CA 900271013088996
  10. Anish Peter, ANISH PETEREl Segundo, CA 902451285884098
  11. Neiveen Peter, M.D.Glendale, CA 912061295013951
  12. Shanon Peter, M.D.Los Angeles, CA 900731447554035
  13. Boris Peterlin, MDSan Francisco, CA 941431992753214
  14. Anne Peters, M.D.Los Angeles, CA 900361023156296
  15. Kenneth Peters, MDMountain View, CA 940401275565624
  16. Kim Peters, MDSolvang, CA 934631972617926
  17. Marion Peters, MDSan Francisco, CA 941431548218316
  18. Walter Peters, M.D.Martinez, CA 945531104857598
  19. Brett Petersen, M.D.San Diego, CA 921031821253493
  20. Carolyn Petersen, M.D.Sausalito, CA 949651215381173
  21. Greti PetersenBakersfield, CA 933011144252040
  22. Jeannette Peterson, M.D.Fairfield, CA 945331063455954
  23. Julia Peterson, DOSan Francisco, CA 941101760989768
  24. Justin Peterson, M.D.Beale Afb, CA 959031174948012
  25. Kirk Peterson, M.D.La Jolla, CA 920371598811358
  26. Laura Peterson, M.D.Altadena, CA 910011962864363
  27. Scott Peterson, M.D.Santa Rosa, CA 954051861535551
  28. Stephanie Peterson, MDVallejo, CA 945891508938317
  29. Thomas Petit, MDHawthorne, CA 902501134423387
  30. Edward Petko, M.D.Sherman Oaks, CA 914031356599526
  31. Ognjen Petras, M.D.Daly City, CA 940141083850598
  32. Anca Petrascu, M.D.Visalia, CA 932771255342929
  33. Laura Petrovich, MDCoronado, CA 921181891800116
  34. Richard Petrucci, MDLos Angeles, CA 900151659259489
  35. Claudia Petruncio, DOWillits, CA 954901699719369
  36. Gabriel Pettersen, MDSan Andreas, CA 952491740251727
  37. Kenneth Pettersen, MD, MPHSylmar, CA 913421710371927
  38. Richard Petyn, M.D.Oceanside, CA 920571376625004
  39. Joshua Pevnick, MDLos Angeles, CA 900481013096064
  40. Elmera Peyman, DOOceanside, CA 920561457093163
  41. Babak Pezeshki, MD, MPHLos Angeles, CA 900571710376926
  42. Benjamin Pezeshki, M.D.Los Angeles, CA 900571578099669
  43. Shadi PezeshkiLa Jolla, CA 920371922284975
  44. Michelle PezzaniMountain View, CA 940401205922440
  45. Michael Pfeffer, M.D.Stanford, CA 943051952434607
  46. Claudia Pfeil, M.D.Pasadena, CA 911051639367584
  47. Anuradha Phadke, M.D.Stanford, CA 943051467742783
  48. David Phak, MDWest Hollywood, CA 900481033798202
  49. Stephanie Phalip, M.D.Walnut Creek, CA 945981497998595
  50. Ai Pham, M.D.Fresno, CA 937011164616736

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.