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 290 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. Faris Shweikeh, M.D.San Luis Obispo, CA 934051962745265
  2. Hogan Shy, MDLos Gatos, CA 950321558449090
  3. Margaret Shyu, MDStanford, CA 943051851846034
  4. Ruby Sia, MDApple Valley, CA 923071518061860
  5. Tigist Tekle Siacha, MDAlameda, CA 945011760809883
  6. Arshad Sial, MDSan Bernardino, CA 924041548343312
  7. Vakas Sial, M.DSan Diego, CA 921101659302305
  8. Ed Marie Sibal-Gomez, M.D.Bakersfield, CA 933011639522477
  9. Belinda Sibanda, MDBakersfield, CA 933131902426711
  10. Sahniah Siciarz-Lambert, M.D.Pasadena, CA 911061215268917
  11. Edward Sickles, M.D.San Francisco, CA 941151396783551
  12. Randy Sid, M.D.Travis Afb, CA 945351144424235
  13. Simin Siddiq, M.D.Fremont, CA 945381255362422
  14. Haziq Siddiqi, MDStanford, CA 943051164009114
  15. Mohammed Siddiqi, MDPlacerville, CA 956671003933094
  16. Sarosh SiddiqiSan Diego, CA 921981649911850
  17. Muhammad Saad Siddique, MBBS, M.D.Loma Linda, CA 923501417681495
  18. Asra Siddiqui, M.D.Newbury Park, CA 913201649275397
  19. Hateem SiddiquiSan Bernardino, CA 924111487099669
  20. Imran Siddiqui, M.D.Victorville, CA 923951134535792
  21. Mohammed Siddiqui, MDDuarte, CA 910101861056251
  22. Shabana Siddiqui, MDLa Mesa, CA 919421326229295
  23. Shahid Siddiqui, MDLancaster, CA 935341639276140
  24. Sophia SiddiquiTulare, CA 932741679956239
  25. Yusha Siddiqui, M.D.Mountain View, CA 940401265662340
  26. Zeeshan Siddiqui, MDLong Beach, CA 908061699328567
  27. Henry Sideropoulos, Md, MDFontana, CA 923371790839736
  28. Ramy Sidhom, M.D.Orange, CA 928681134583065
  29. Amandeep Sidhu, DOLoma Linda, CA 923541427795210
  30. Amanjot Sidhu, M.D.Fremont, CA 945381528390804
  31. Asha Pritpal Sidhu, MDFresno, CA 937101255430286
  32. Baljeet Sidhu, M.D.Fresno, CA 937201336292176
  33. Gurmeet Sidhu, MDFairfield, CA 945331841378734
  34. Gurpartap SidhuTracy, CA 953761821404781
  35. Jasmin Sidhu, M.D.Long Beach, CA 908071023449881
  36. Kulraj Sidhu, M.D.Fowler, CA 936251992957088
  37. Mandeep SidhuFresno, CA 937221700394608
  38. Manpreet SidhuVacaville, CA 956881821627928
  39. Namrata Sidhu, MDPleasanton, CA 945881700964897
  40. Ramandeep Sidhu, M.D.Stockton, CA 952091821659749
  41. Ramanjeet Sidhu, M.D.Bakersfield, CA 933061568816924
  42. Sabrin Sidhu, MDValencia, CA 913551730839242
  43. Sohrab Sidhu, MD, MPH, MSAntioch, CA 945311174966238
  44. Allan Siefkin, MDSacramento, CA 958171033113758
  45. Bary Siegel, MDSacramento, CA 958161558462135
  46. David Siegel, M.D.Mather, CA 956551023092590
  47. Jeffrey Siegel, MDLos Angeles, CA 900341366590234
  48. Jonathan Siegel, MDSan Diego, CA 921201477601359
  49. Joseph Siegel, M.D.Oceanside, CA 920551083935951
  50. Tracy Siegfried, M.D.Laguna Hills, CA 926371366598591

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.