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 304 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. Bo Sun, MDStanford, CA 943051366946121
  2. Christine SunSanta Monica, CA 904041003278177
  3. Christine Sun, M.D.Corona, CA 928791093983371
  4. Christopher Sun, MDRedondo Beach, CA 902771245407105
  5. Diane Sun, M.D.Hayward, CA 945451962527952
  6. Grace Sun, MDSacramento, CA 958171356071336
  7. Helen Sun, MDDaly City, CA 940151952966442
  8. Jennifer Sun, D.O.San Diego, CA 921031548585391
  9. Jesse Sun, MDSan Francisco, CA 941021801337019
  10. Karen Sun, M.D.Irvine, CA 926181326229220
  11. Kevin Sun, M.D.Irvine, CA 926181265726517
  12. Maria Sun, MDSacramento, CA 958251528227626
  13. Sheryl Sun, MDSanta Clara, CA 950511518039338
  14. Shih-Fan SunRolling Hills Estates, CA 902741003234063
  15. Sophie Sun, MD, PHDLoma Linda, CA 923541144726829
  16. Stephen Sun, DOCoronado, CA 921181437644242
  17. Susan Sun, M.D.Greenbrae, CA 949841871685578
  18. William SunFresno, CA 937011649777616
  19. Wynnshang Sun, MDLa Jolla, CA 920371801806732
  20. Xiaolu Sun, MDStockton, CA 952101619055506
  21. Yeming Sun, M.D.Irvine, CA 926181811977069
  22. Sam Sundar, MDConcord, CA 945201801904545
  23. Jayasree SundaramSan Francisco, CA 941091417489840
  24. Kamalini Sundaram, MDEncinitas, CA 920241528135951
  25. Mathuran SundaramoorthyModesto, CA 953541982057154
  26. Chithraleka Sundaramurthy, M.DFontana, CA 923351033303953
  27. Cruz-Elena Sundquist, M.D.Covina, CA 917231699776211
  28. Alexander SungPasadena, CA 911051255080891
  29. Dongjin Sung, M.D.Gardena, CA 902471114231198
  30. Hung-Min Sung, M.D.Santa Ana, CA 927041063692150
  31. Kijung Sung, MDHarbor City, CA 907101760541411
  32. Melissa Sung, MDDublin, CA 945681467666883
  33. Latha Sunil Kumar, M.DJackson, CA 956421184988396
  34. Gilbert Sunio, M.D.Visalia, CA 932911972500577
  35. Tejasvi Sunkara, M.DModesto, CA 953551154708816
  36. Michael Sunnaa, MDRiverside, CA 925051790414589
  37. Rahnea Sunseri, MDSacramento, CA 958171205016292
  38. Sydney Supit, M.D.Sacramento, CA 958161912979162
  39. Roger Sur, MDNewport Beach, CA 926601902300221
  40. Murali Surapaneni, MDHarbor City, CA 907101235396862
  41. Ashley Suraweera, MDSanta Monica, CA 904041437681046
  42. Shanthi Suresh, MDWoodland Hills, CA 913671205984267
  43. Gayatri Suresh Kumar, MDStanford, CA 943051073010328
  44. Malvika Suri, MDCarmichael, CA 956081598875346
  45. Strettapon Suriyaniel, M.D.Irvine, CA 926181124184692
  46. Sampath Suryadevara, M.D.Anaheim, CA 928011932226750
  47. Sourabh Suryadevara, M.D.Mission Hills, CA 913451043505969
  48. Santa Suryaraman, MDSanta Clara, CA 950511063584712
  49. Jithu Susan Mathew, M.D.Moreno Valley, CA 925551770863797
  50. George Susens, MDSan Francisco, CA 941151295813814

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.