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 112 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. Emmanuel Guerrero, MDFresno, CA 937201205914330
  2. Esteban Guerrero, M.D.Sacramento, CA 958161790247831
  3. Ethelwoldo Guerrero, MDColusa, CA 959321235155318
  4. Luz Guerrero, MDLincoln, CA 956481336227917
  5. Roberto Guerrero, MDSun Valley, CA 913521679150957
  6. Victor Guerrero, MDSanta Maria, CA 934581972596963
  7. Arleen Guerrero-Nieva, M.D.Long Beach, CA 908061023024346
  8. Sarah Guerry, M.D.Los Angeles, CA 900071588862551
  9. Matthew Guest, M.DEscondido, CA 920251023038601
  10. Daisy Guevara, MDLakewood, CA 907121396740932
  11. Pablo Guevara, M.D.San Pablo, CA 948061811967748
  12. Pedro Guevara, MDSan Francisco, CA 941101043338734
  13. Jarnail Gugga, M.D.Pomona, CA 917671598769846
  14. Asim Guha Roy, MDSan Diego, CA 921231083659528
  15. Camilo Guiang, MDSan Luis Obispo, CA 934051881886935
  16. Paul Guidry, M.D.Los Angeles, CA 900081255665824
  17. Eduardo Guillen, MDOakland, CA 946021891315933
  18. Lewis Guiss Jr., MDLos Angeles, CA 900341629145636
  19. Sheila Gujrathi, M.D.San Francisco, CA 941021114113156
  20. Khawar Gul, MDLompoc, CA 934361538296744
  21. Abhishek Gulati, M.D.Fresno, CA 937011629380308
  22. Aparna Gulati, MDFremont, CA 945381235201989
  23. Mehak GulatiRocklin, CA 956771578056958
  24. Dickran Gulesserian, M.D.Fresno, CA 937201336287440
  25. Mark Gullapalli, MDModesto, CA 953561336291566
  26. Tarannum Guller, MDWalnut Creek, CA 945981972532083
  27. P. Gunanayagam, MDAntioch, CA 945091811075997
  28. Christopher Gunasekera, MDSan Jose, CA 951281275597452
  29. Basuki Gunawan, M.D.Downey, CA 902421346352473
  30. Gimha Gunawardana, M.DPomona, CA 917671720274921
  31. Delani GunawardenaLos Angeles, CA 900951205255858
  32. Narayana Gunda, M.D.Downey, CA 902411720026271
  33. Sindhu Gundapuneni, MDLos Gatos, CA 950321023469384
  34. Katherine Gundling, MDSan Francisco, CA 941431275589319
  35. Anitha Gundupalli, MDSunnyvale, CA 940861568571206
  36. Joanna Gunn, MDSan Diego, CA 921201427106210
  37. Nazanin Gunn, M.D., M.H.A.Thousand Oaks, CA 913601306165857
  38. Sandeep Guntur, MD,MPHSan Francisco, CA 941211902970221
  39. Denghui Guo, MDValencia, CA 913551750844536
  40. Fang Guo, MDStockton, CA 952101598843401
  41. Grace Guo, MDSunnyvale, CA 940861902811375
  42. Mengying GuoTorrance, CA 905021235664301
  43. Tiffany Guo, M.D.San Jose, CA 951281922549286
  44. Verna Guo, MDHarbor City, CA 907101942358833
  45. Anamika Gupta, MDSan Francisco, CA 941091144301722
  46. Anil Gupta, MDWest Covina, CA 917901538182407
  47. Anil Gupta, M .D.Delano, CA 932161912191594
  48. Anita Gupta, MDPalo Alto, CA 943011194831727
  49. Bali GuptaSanta Clara, CA 950511316409634
  50. Brij Gupta, M.D.San Diego, CA 921011174532543

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.