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 337 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. Shane Wilder, MDWest Hollywood, CA 900481922667443
  2. Lilly Wilen, M.D.Northridge, CA 913251275553679
  3. Kimberly Wiley, MDVacaville, CA 956881780734590
  4. Crystal Wiley Cene, M.D.San Diego, CA 921031477581627
  5. Lydia Wilga, MDMountain View, CA 940401043639016
  6. Emilee Wilhelm-Leen, M.D.Stanford, CA 943051568778074
  7. Hannah Wilkerson, MDSan Francisco, CA 941101023696937
  8. Illya Wilkerson, MDLos Angeles, CA 900271124097183
  9. Alan Wilkins, MDAnaheim, CA 928071770654709
  10. Carissa Wilkins, DOFresno, CA 937201164926549
  11. Daryl Wilkins, D.O.Linden, CA 952361043429186
  12. Erika-Lizett Wilkins Y Martinez, MD, MPHSylmar, CA 913421235627340
  13. Ariana WilkinsonSanta Monica, CA 904041538521760
  14. Patricia Will, MDSacramento, CA 958141093767840
  15. Julie Willard, M.D.San Diego, CA 921031760639355
  16. Mark WilleMartinez, CA 945531205904133
  17. Stefan Willging, MDSan Diego, CA 921031679523518
  18. Lawrence WilliamFoster City, CA 944041124146808
  19. Aaron Williams, MDSanta Clara, CA 950511982783627
  20. Alanna WilliamsSan Francisco, CA 941431407505613
  21. Andrew Williams, M.D.Pasadena, CA 911051245641869
  22. Angela Williams, MDLoma Linda, CA 923571710112560
  23. Ashely Williams, MDTorrance, CA 905021831652817
  24. Brandon Williams, MDLa Jolla, CA 920371871097436
  25. Brandy Williams, MDWoodland Hills, CA 913671174671168
  26. Howard Williams, MDSan Diego, CA 921031548210081
  27. Jason Williams, M.D.San Diego, CA 921341164816229
  28. John Williams, D.O.Willits, CA 954901144220369
  29. Katherine Williams, M.D.Saint Helena, CA 945741710371463
  30. Kimberly Williams, D.O.Folsom, CA 956301376517656
  31. Mia Williams, MDSan Francisco, CA 941431386030906
  32. Paul Williams, MDSelma, CA 936621447339239
  33. Richard Williams, MDSan Marino, CA 911081972577690
  34. Robert Williams, M.DSan Francisco, CA 941101225193667
  35. Robert Williams, M.D.Tracy, CA 953771184682254
  36. September Williams, MDSan Francisco, CA 941161013933886
  37. Winifred Williams, M.D.Canoga Park, CA 913031982788253
  38. Laura Williams Wayne, MDSan Diego, CA 921061174729255
  39. Eric Williamson, MDTravis Afb, CA 945351285374108
  40. Christine Willinger, MD, MPHLos Angeles, CA 900951508493107
  41. Sandra Willis, MDSacramento, CA 958211225062847
  42. Zachary Wills, DOTravis Afb, CA 945351366036717
  43. Stuart Willson, M.D.Los Angeles, CA 900171841262045
  44. Charles Willyard, DOFresno, CA 937111437654258
  45. Avery Wilmanns, M.D.Santa Barbara, CA 931101093728859
  46. Abigail Wilson, M.D.San Francisco, CA 941211871799171
  47. Cara Wilson, M.D.Torrance, CA 905031356751879
  48. David Wilson, MDFort Jones, CA 960321801891130
  49. Desmond Wilson, MDSan Francisco, CA 941081316384472
  50. Edward Wilson, MDTorrance, CA 905051164441895

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.