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 186 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. Yao Liu, MDSanta Monica, CA 904041033613690
  2. Ying Liu, MDModesto, CA 953501528494267
  3. Yong Liu, M.D.San Francisco, CA 941181316137987
  4. Yong Liu, M.D.Sonoma, CA 954761568424919
  5. Yu Liu, MDWoodland Hills, CA 913671326196122
  6. Zune Liu, MDRowland Heights, CA 917481619069838
  7. Louis Livoti, M.D.Novato, CA 949471487997102
  8. Miguel Lizama, MDMission Hills, CA 913451174699151
  9. Ian LizardoOrange, CA 928681356872030
  10. Jennifer Lizcano, D.O.Long Beach, CA 908061649534900
  11. Paul Lizotte, DOOceanside, CA 920581699855841
  12. Marielle Andrea Llamas, MDSacramento, CA 958171205419025
  13. Christopher Llerena, MDStanford, CA 943051467155382
  14. Evelyne Llorente, MDHuntington Beach, CA 926471306926423
  15. Alan Lo, MDLaguna Hills, CA 926531982683637
  16. Bernard Lo, MDSan Francisco, CA 941431184688137
  17. Brian Lo, MDIrvine, CA 926181073501565
  18. Butchau Lo, MDRedwood City, CA 940631730267378
  19. Constance Lo, MDSan Jose, CA 951281033175997
  20. Daniel Lo, M.D.Encinitas, CA 920241700028354
  21. Edmund Lo, M.D.Alhambra, CA 918011811180953
  22. Eleanor Lo, MDSacramento, CA 958231508944224
  23. Fernandina Lo, MDPleasanton, CA 945881427055706
  24. Jessica LoTorrance, CA 905021558745646
  25. Joan Lo, MDOakland, CA 946121457437980
  26. Jocelyn LoSanta Monica, CA 904041699235085
  27. Jonathan Lo, MDFontana, CA 923351164570941
  28. Kelly Lo, M.D.West Hollywood, CA 900481174978977
  29. Lauren Lo, MDSan Jose, CA 951281245818897
  30. Lisa Lo, MDGilroy, CA 950201740492297
  31. Lucy Lo, M.D.Pasadena, CA 911051083645725
  32. Michelle Lo, MDStanford, CA 943051891145264
  33. Hanan Lobel, MDVan Nuys, CA 914111174612287
  34. Josef Lobel, M.D.Van Nuys, CA 914111295769230
  35. Sarita LoboSanta Cruz, CA 950621528144334
  36. Pamela Lobo Moreno, M.D.Loma Linda, CA 923541366824070
  37. Susan Locke, M.D.Hanford, CA 932301063530087
  38. Richard Lockmiller, M.D.Fair Oaks, CA 956281518942218
  39. Richard Locksley, M.D.San Francisco, CA 941431316981533
  40. Karen Lockwood, MDVentura, CA 930031558330399
  41. Timothy Lockyer, MDSan Jose, CA 951191447336961
  42. Saima Lodhi, MDSan Diego, CA 921031215963590
  43. Anant Lodhia, M.D.Sacramento, CA 958411598846743
  44. Robert Loera, MDHemet, CA 925451639287642
  45. Julie Loewen, M.D.Roseville, CA 956611083056097
  46. John Lofrese, MDSan Diego, CA 921341457848657
  47. Adina Logan, M.D.Santa Rosa, CA 954051881667178
  48. Andrew LoganLoma Linda, CA 923541518379007
  49. John Logan, M.D.Fresno, CA 937221356672703
  50. Genevieve Logie, MDRoseville, CA 956781215909437

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.