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 341 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. Petra Wong, MDLos Alamitos, CA 907201578585915
  2. Philip Wong, MDOrange, CA 928681699729558
  3. Raymond Wong, M.D.Loma Linda, CA 923541912929274
  4. Robert Wong, M.D.San Francisco, CA 941181952625147
  5. Sammy Wong, MDRedlands, CA 923731265535124
  6. Sandy Wong, M.D.San Francisco, CA 941431396972956
  7. Sara Wong, D.OMission Hills, CA 913451053733584
  8. Scott Wong, DOSan Jose, CA 951281528529526
  9. Sophia Wong, MDSan Francisco, CA 941101336347202
  10. Stephanie Wong, MDMountain View, CA 940401396851663
  11. Stewart Wong, MDSan Francisco, CA 941151235334228
  12. Sunny Wong, D.O.Monterey Park, CA 917541134204043
  13. Tan Wong, MDLa Verne, CA 917501790728749
  14. Terrelea Wong, MDDaly City, CA 940151184702730
  15. Tony Wong, M.D.Daly City, CA 940151831274422
  16. Victor Wong, MDPasadena, CA 911011447226634
  17. Vincent Wong, D.O.San Leandro, CA 945771952765919
  18. Wah WongEscondido, CA 920291205418613
  19. William Wong, M.D.Bellflower, CA 907061093723306
  20. Wing Ken Wong, DOSouth San Francisco, CA 940801982223608
  21. Winslow Wong, MDWalnut Creek, CA 945961861566168
  22. Winston Wong, M.D.La Palma, CA 906231932284817
  23. Ida Wong-Sefidan, M.D.San Diego, CA 921031285830430
  24. Helen Wong-Sexton, M.D.Fremont, CA 945381144563339
  25. Supakanya Wongrakpanich, M.DLoma Linda, CA 923541568877413
  26. Jeffrey Wonoprabowo, M.D.Loma Linda, CA 923501629330436
  27. Christopher Woo, M.D.Stanford, CA 943051851573083
  28. Hawkin Woo, MDLos Angeles, CA 900951184644213
  29. Heide Woo, MDLos Angeles, CA 900241366453086
  30. Kiho Woo, M.D.Fullerton, CA 928351003091539
  31. Linda Woo, M.D.Sacramento, CA 958161518949965
  32. Michael Woo, M.D.Loma Linda, CA 923571538273099
  33. Suzanne Woo, M.D.Palo Alto, CA 943041487719845
  34. Wonhee WooSan Jose, CA 951191851824817
  35. Brian Wood, MDSan Diego, CA 921201144664947
  36. Dawn Wood, MDLos Angeles, CA 900951093735136
  37. Scott Wood, M.D.Menlo Park, CA 940251740377696
  38. Yelena Wood, M.D.San Clemente, CA 926721821091174
  39. Gary Woodall, M.D.San Diego, CA 921031427168301
  40. Terry Woodard, MDSanta Rosa, CA 954031871677872
  41. David Woodhouse, MDVacaville, CA 956881033299912
  42. Prescott Woodruff, MDSan Francisco, CA 941431356391239
  43. Emily WoodsPalo Alto, CA 943041558998682
  44. Gina Woods, MDChula Vista, CA 919111467401521
  45. James Woods, M.D.Alamo, CA 945071750315016
  46. Robert Woods, M.D.Hanford, CA 932301386697514
  47. Gary Woodward, M.D.Jackson, CA 956421992716088
  48. Glen Michael Wool, M.D.Beverly Hills, CA 902121265598593
  49. Howard Worcester, M.D.Long Beach, CA 908061689696585
  50. Betre Workie, MDSan Diego, CA 921201699061002

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.