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 256 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. Sera Ramadan, D.O.Glendale, CA 912041497141071
  2. Purushotham Ramaiah, M.DLoma Linda, CA 923571972740157
  3. Sampath Ramakrishnan, M.D.Pleasanton, CA 945881699725440
  4. Monica Ramakuri, M.D.Fresno, CA 937201598129181
  5. Daya Raman, MDWest Hollywood, CA 900481700312956
  6. Srilata Raman, M.D.Fremont, CA 945381003980590
  7. Tanvi Raman, M.D.San Jose, CA 951161649501446
  8. Radhika Ramanan, M.D, M.P.H.San Francisco, CA 941431619169877
  9. Bhuvana Ramanathan, MDSan Diego, CA 921201831247618
  10. Margabandhu Ramanathan, MDPanorama City, CA 914021811045800
  11. Bhavesh Ramani, M.D.West Hollywood, CA 900481285054635
  12. Neela Ramanujam, M.D.Mission Hills, CA 913451801229463
  13. Sahana Ramanujam, M.D.Carmichael, CA 956091881923704
  14. Nandinidevi Ramaswamy, MDFillmore, CA 930151245613348
  15. Vyjayanti Ramaswamy, M.D.Orinda, CA 945631730110784
  16. Aruna Ramayya, M.D.Torrance, CA 905051578545406
  17. Shreya Ramayya, MDWest Hollywood, CA 900481265120117
  18. Harsha Ramchandani, M.D.Fremont, CA 945381659548683
  19. Nina Ramchandani, MDPalo Alto, CA 943041518149434
  20. Ankhita Ramdas, M.B.B.SSan Diego, CA 921271013545953
  21. Navindra Ramdeen, D.O.Sacramento, CA 958251821260985
  22. Christian Ramers, MDSan Diego, CA 921031730381385
  23. Jaishri Ramesh, M.D.Cupertino, CA 950141750413589
  24. Radha RameshOakland, CA 946021316392780
  25. Veda Ramesh, M.D.Downey, CA 902421790092369
  26. David Ramin, M.D.Beverly Hills, CA 902111992893424
  27. Neelakantan Ramineni, MDSan Diego, CA 921151881782647
  28. Tina RamineniWest Hollywood, CA 900481174059893
  29. Diomidio Ramirez, M.D.Palm Springs, CA 922621740432145
  30. Jessica Ramirez, MDSalinas, CA 939011235524430
  31. Jesus Ramirez, MDStanford, CA 943051528697570
  32. Victoria RamirezSan Mateo, CA 944031699821660
  33. Sahira Ramirez Agramonte, M.D.Roseville, CA 956611528240405
  34. Haiyan Ramirez Batlle, M.D.San Quentin, CA 949641851740708
  35. Claudia Ramirez Sanchez, M.D.San Diego, CA 921031659720555
  36. Julio Ramirez Siliezar, MDSacramento, CA 958171134821705
  37. Dattatreya Ramisetti, MDNewport Beach, CA 926631568443059
  38. Sunil Ramnani, MDBakersfield, CA 933011881761609
  39. Ruth RamonLoma Linda, CA 923541063154854
  40. Bernard Ramos, M.D.Wasco, CA 932801730304478
  41. Eleanor RamosPacifica, CA 940441700414224
  42. Emiliano Ramos, MDSan Jose, CA 951341699727867
  43. Jeffrey Ramos, M.D.San Diego, CA 921031356538011
  44. Julia RamosLos Angeles, CA 900951033484233
  45. Maria Ramos, M.D.Santa Ynez, CA 934601538175864
  46. Neill Ramos, M.D.Long Beach, CA 908131073776191
  47. Tana Nicole Ramos, MDSan Jose, CA 951281942904008
  48. Raquel Ramos Garcia, MDTulare, CA 932741396024337
  49. Jade Ramos-Poblete, M.D.San Bruno, CA 940661407128119
  50. Shamsundar Ramrattan, D.O.Canyon Country, CA 913871598968844

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.