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 303 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. Anandhi Sudhagaran, MDMountain View, CA 940401417391095
  2. Shiv Sudhakar, MDWalnut Creek, CA 945971275711996
  3. Elena Sudjian, MDSacramento, CA 958171114905502
  4. Clara Sue, M.DDaly City, CA 940151528382140
  5. Eric Sue, M.D.Los Angeles, CA 900671033421730
  6. Ronald Sue, M.D.Los Angeles, CA 900671932193893
  7. Joshua Suelflow, MDRedwood City, CA 940621396308755
  8. Leslie Suen, M.D.San Francisco, CA 941101679937270
  9. Sidra Suess, M.D.Stockton, CA 952101720474414
  10. Jo-Anne Suffoletto, M.D.Stanford, CA 943051558551051
  11. Michael Suflita, MDSacramento, CA 958161891396768
  12. Gary Sugarman, M.D.Mission Viejo, CA 926911942383203
  13. Tina Sugimoto, MDSan Jose, CA 951291295832335
  14. Gerald Sugino, M.D.Mission Viejo, CA 926911427036284
  15. Joshua Sugino, DOMission Viejo, CA 926911407322654
  16. Diana Suh, MDSan Rafael, CA 949031417031485
  17. Joon Seok Suh, MDSan Jose, CA 951241023644929
  18. Julia SuhRedlands, CA 923731033506928
  19. Dana Suhandynata, MDEncinitas, CA 920241316366313
  20. Sunil Sujan, M.D.Santa Monica, CA 904031598740474
  21. Ulrike Sujansky, MDSan Mateo, CA 944011700993177
  22. Hwan Suk, M DGlendale, CA 912061619902509
  23. Larry Suk, MDGardena, CA 902491912961939
  24. Piyanetr Sukhu, M.D.Laguna Hills, CA 926531497750269
  25. Marah Sukkar, MDBakersfield, CA 933061043847890
  26. Montee Suleiman, MDRancho Mirage, CA 922701407926405
  27. Susan Sulieman, M.D.Los Angeles, CA 900331033361290
  28. Ashraf Suliman, M.DSan Diego, CA 921541962852590
  29. Idrees Suliman, MDEl Centro, CA 922431598127748
  30. Andrea Sullivan, MDSanta Clara, CA 950541265496905
  31. David Sullivan, MDBaldwin Park, CA 917061467529370
  32. Ellen Sullivan, MDRedwood City, CA 940631972681567
  33. Gabriela Sullivan, MDMartinez, CA 945531275620023
  34. John Sullivan, MDThousand Oaks, CA 913201558756262
  35. Kathryn SullivanSan Francisco, CA 941431972966083
  36. Michael Sullivan, M.D.San Diego, CA 921031932100807
  37. Pamela Sullivan, MDHuntington Beach, CA 926471326191107
  38. Patrick Sullivan, M.D.Santa Cruz, CA 950601558656660
  39. Scott Sullivan, M.D.Union City, CA 945871952480667
  40. Ayyaz Sultan, MDInglewood, CA 903011154063295
  41. Intisab Sultan, M.D.Selma, CA 936621548362296
  42. Kinza SultanCarmel, CA 939231538749502
  43. Belal SultanzaiSacramento, CA 958171003470659
  44. Jagpal Suman, MDFresno, CA 937211336411685
  45. Norril Sumanqui, MDSalinas, CA 939011033112503
  46. Jennifer Sumant, MDSanta Clara, CA 950511437221249
  47. Al Sumaquial, MDAntioch, CA 945091073665204
  48. Elaine Sumaquial, M.D.Antioch, CA 945091316094089
  49. Natalya Sumina, M.D.Los Angeles, CA 900661437288123
  50. Sarah Summerville, M.D.San Francisco, CA 941431265669907

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.