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 136 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. James Jackson, MDSacramento, CA 958161508855594
  2. John JacksonSanta Cruz, CA 950621780664557
  3. Roy Jackson, M.D.Pasadena, CA 911011669424982
  4. Rozalie Jackson, MDLong Beach, CA 908151700086667
  5. Christina Jacob, M.D.Thousand Oaks, CA 913601497758957
  6. Jeric JacobSan Francisco, CA 941211659005460
  7. Jessy Jacob, MDBakersfield, CA 933011992872816
  8. Shawn Jacob, MDMountain View, CA 940401013478528
  9. Bradly Jacobs, MDSausalito, CA 949651184680258
  10. Charlotte Jacobs, M.D.Palo Alto, CA 943041225184245
  11. Elizabeth Jacobs, MDRiverside, CA 925011023046059
  12. Michael Jacobs, M.D.Menlo Park, CA 940251134263312
  13. Natalia Jacobs, MDHemet, CA 925431386208791
  14. Richard Jacobs, MDSan Francisco, CA 941431063477883
  15. Shahram Jacobs, M.D.Encino, CA 914361659439040
  16. Steven Jacobs, M.D.Beverly Hills, CA 902111750455259
  17. Youhana Jacobs, MDModesto, CA 953551396793717
  18. Bruce Jacobson, M.D.West Hills, CA 913071558314971
  19. David Jacobson, MDSan Francisco, CA 941151144358706
  20. Mark Jacobson, MDSan Francisco, CA 941101780791426
  21. David Jacoby, MDSan Carlos, CA 940701295715134
  22. Pushkal Jadaun, MDMadera, CA 936381144625997
  23. Hassan Jadid, M.D.Orange, CA 928691104171925
  24. Christopher Jaeger, MDSan Francisco, CA 941121851464713
  25. Hamta Jafari, M.D.Oakland, CA 946021285947804
  26. Robert Jaffe, MDWoodland Hills, CA 913671326328444
  27. Ali Jafferi, M.D.Lancaster, CA 935361912042235
  28. Fatima Jafri, M.D.Roseville, CA 956611760680896
  29. Rajasekar Jagadeesan, M.D.Mather, CA 956551790967586
  30. Meera Jagannath, DOWalnut Creek, CA 945961558487140
  31. Priya Jagasia, M.D.San Diego, CA 921281679641971
  32. Justin Jaghab, M.D.Santa Clara, CA 950511629348685
  33. Mayuri Jagirdar, MDSan Jose, CA 951271235443946
  34. Pushpa Jagtiani, MD.Fremont, CA 945391811243892
  35. Sonia Jahan, MDSan Jose, CA 951281760062608
  36. Fereshteh Jahanpanah, MDEl Cajon, CA 920201518034115
  37. Stephanie Jahnz, MDSan Diego, CA 921341548960982
  38. Mehdi Jahromi, MDYucaipa, CA 923991356388177
  39. Anjali Jain, M.D.Los Angeles, CA 900311962707265
  40. Bhawna JainKentfield, CA 949041912029190
  41. Manjula Jain, M.D.Burbank, CA 915011437121233
  42. Meenakshi Jain, MDRedwood City, CA 940631699854349
  43. Naman Jain, DO, MBAFresno, CA 937011235832619
  44. Neeta Jain, M.D.Palo Alto, CA 943011467647479
  45. Nishita JainWest Hollywood, CA 900481952838930
  46. Paul Jain, M.D.San Diego, CA 921081427263367
  47. Pragya Jain, M.D.Belmont, CA 940021053624189
  48. Priyanka Jain, M.DSanta Clara, CA 950511962588087
  49. Rajul Jain, M.D.Thousand Oaks, CA 913201629161047
  50. Rashmi Jain, M.DWalnut Creek, CA 945981457536088

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.