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 298 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. Yuru Song, MDAntioch, CA 945091417029257
  2. Meera Soni, M.D.Apple Valley, CA 923071285165944
  3. Sophia Soni, M.D.Los Angeles, CA 900591346564101
  4. Viney Soni, M.DFountain Valley, CA 927081447341409
  5. George Sonneborn, AFE23957Pasadena, CA 911031922187962
  6. Sadhana Sonti, MDSouth San Francisco, CA 940801780800185
  7. Terence Sonuga, M.DLoma Linda, CA 923541962813857
  8. Steven Soo, MDStanford, CA 943051043955669
  9. Archita SoodHuntington Beach, CA 926471184913600
  10. Archna Sood, MDVictorville, CA 923951003980756
  11. Krystal Sood, MDWalnut Creek, CA 945961114585494
  12. Om Sood, MDVictorville, CA 923951023182763
  13. Sunita Sood, M.D.Sacramento, CA 958161497997324
  14. Khalil Soomro, MDLa Mesa, CA 919411265409296
  15. Behram Soonawala, M.D.Berkeley, CA 947101104895085
  16. Baljeet Soor, MDSacramento, CA 958251831830579
  17. Punitha Sooriyakumaran, MDSan Jose, CA 951281447351663
  18. Christine SoranSan Francisco, CA 941101003236795
  19. Andrew Sorensen, DOColton, CA 923241477441673
  20. Susan Sorensen, MDLos Altos, CA 940241366523862
  21. Elaine Joy Soriano, MDModesto, CA 953501154304335
  22. Michaela Soriano, MDSanta Clara, CA 950511033748694
  23. Virgilio Soriano, M.D.West Covina, CA 917921801843073
  24. Zoraida Soriano, M.D.McClellan, CA 956521699745612
  25. David Sorour, M.D.Sacramento, CA 958231588984330
  26. Cynthia Sorrell, MDSan Diego, CA 921201104974088
  27. Robert Sosa, MDWalnut Creek, CA 945961902984008
  28. Martha Sosa-Johnson, MDOrange, CA 928681306926530
  29. Allan Sosin, MDIrvine, CA 926181598789299
  30. Barney SoskinWest Hollywood, CA 900481518313782
  31. Jonathan Sosnov, M.D.McClellan, CA 956521144288101
  32. John Sotelo, M.D.Eureka, CA 955011164447504
  33. Subada Soti, MDFremont, CA 945381508493297
  34. Denise Soto, D.O.La Canada, CA 910111730354911
  35. Patricia Sotolongo, DOPalm Springs, CA 922621093176075
  36. Sun Soung, M.D.Rialto, CA 923761295893162
  37. Mehran Sourehnissani, M.D.Inglewood, CA 903031992745285
  38. Andrew Sous, DOOrange, CA 928681790480861
  39. Rowis Sous, MDOrange, CA 928681699425801
  40. Harlan South, MDSan Francisco, CA 941021750438099
  41. Robert Southmayd, D.O.Ceres, CA 953071982700969
  42. Douglas Souvignier, M.D.Mountain View, CA 940401689681504
  43. Victor Souza, M.D.Vista, CA 920841457340200
  44. Marta Sovilj, M.D.Santa Barbara, CA 931051942302088
  45. Zetha Sovyanhadi, MDPasadena, CA 911051699395137
  46. David Sox, MDRoseville, CA 956611093812026
  47. Marta Spaeth, M.D.Delano, CA 932161538370432
  48. Chad Sparks, MDTorrance, CA 905051154392959
  49. Lowell Sparks, MDBeaumont, CA 922231063826204
  50. Paul Speckart, MD, M.F.A.C.P.San Diego, CA 921031447346192

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.