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 239 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. Neil Parker, MDLos Angeles, CA 900951154344604
  2. Jenny Parma, D.O.Oakland, CA 946021285055210
  3. Shobhna Parmar, D.O.Vacaville, CA 956881477724797
  4. Robert Parmer, M.D.La Jolla, CA 920931013932318
  5. Caitlin Parmer-Chow, MDStanford, CA 943051902433568
  6. Michael Parmley, M.D.Newark, CA 945601609873074
  7. Denise Parnell, M.D.Spring Valley, CA 919771366477648
  8. Gregor Paronian, M.D.Pasadena, CA 911061366627945
  9. Oganes Paronian, MDNorth Hollywood, CA 916061528048899
  10. Hafiz Parray, MDSan Fernando, CA 913401932297710
  11. David Parris, MDNorth Hollywood, CA 916071154403921
  12. Naomi Parry, M.D.Santa Barbara, CA 931111801920327
  13. Firoozeh Parsa Nezhad, MDSan Francisco, CA 941611104969229
  14. Donald Parsons, MDDanville, CA 945261760447320
  15. John Parsons, M.D.Oroville, CA 959661578620076
  16. Sarah Parsons, MDOakland, CA 946111699971028
  17. Niranjana Parthasarathi, MDCloverdale, CA 954251134185473
  18. Sudharshan Parthasarathy, M.D.Walnut Creek, CA 945951790103562
  19. Diana Partida, MDSan Francisco, CA 941431346803798
  20. Ryan Parto, MDWhittier, CA 906021528761699
  21. Iris Partovi, M.D.Long Beach, CA 908131104019462
  22. Justin PartoviHemet, CA 925431629769534
  23. Kiandokht Partovi, M.D.Montclair, CA 917631689763427
  24. Sangeeta Parulekar, D.O.Sacramento, CA 958161235243882
  25. Rafia Parveen, M.D.,San Jose, CA 951161699793240
  26. Amir Parvinchiha, MDSylmar, CA 913421417262163
  27. Payam Parvinchiha, M.D.Berkeley, CA 947101851690622
  28. James PasaloOakland, CA 946021316319023
  29. Roeliza Pascua, M.D.San Jose, CA 951261861503443
  30. Ryan PascuaSan Ysidro, CA 921731972064269
  31. Albert Pascual, M.D.San Fernando, CA 913401053303719
  32. Honesto Pascual, M.D.Norco, CA 928601033211438
  33. Jose Pascual, M.D.Lancaster, CA 935361306981683
  34. Puri Lorena Pascual, M.D.La Quinta, CA 922531982814398
  35. Matthew Pascucci, MDStanford, CA 943051710441456
  36. Sabiha Pasha, M.D.Oceanside, CA 920541871529461
  37. Shahe Pashayan, MDMontebello, CA 906401295894871
  38. Grace Pasiliao, MDTorrance, CA 905021043954597
  39. Leigh Passman, M.D.Los Angeles, CA 900731104082924
  40. Gary Pasternak, MDSan Mateo, CA 944031194820688
  41. Tejasvi PasupnetiTorrance, CA 905021427442359
  42. Gunjan Patangay, M.D.Sacramento, CA 958171558687202
  43. Maria Patanwala, MDSanta Monica, CA 904041801387493
  44. Bradley Patay, M.D.La Jolla, CA 920371689645756
  45. Aditi Patel, D.OBurlingame, CA 940101265622898
  46. Ajay PatelFresno, CA 937201235516477
  47. Akash Patel, PA-CCudahy, CA 902011598455008
  48. Akash PatelRancho Mirage, CA 922701083297790
  49. Akash Patel, DOModesto, CA 953551487175238
  50. Alka Patel, M.D.-PH.D.Martinez, CA 945531780642314

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.