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 110 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. Solomon Greenberg, MDSan Diego, CA 921231376930321
  2. Ruth Greenblatt, MDSan Francisco, CA 941431902854441
  3. Claire Greene, MDSan Francisco, CA 941431881271260
  4. Edward GreeneChula Vista, CA 919131265401368
  5. Kenneth Greene, MDSanta Clara, CA 950511255418109
  6. Robert Greene, MDRancho Mirage, CA 922701073086583
  7. William Greene, MDSan Francisco, CA 941071437675915
  8. Nancy Greengold, MDLos Angeles, CA 900241033328208
  9. Richard Greengold, M.D.Laguna Hills, CA 926531477740488
  10. Queziah Greenidge, MDOakland, CA 946111760913701
  11. Edward Greenleaf, M.D.Stockton, CA 952071629158340
  12. Ellen Greenman, MDCayucos, CA 934301932390499
  13. Andrew Greenspan, MDSan Diego, CA 921221629229281
  14. Richard Greenspun, MDSanta Monica, CA 904011417984600
  15. George Greenwald, MDMountain View, CA 940411952451767
  16. Daniel Greenwood, M.D.San Francisco, CA 941151033317268
  17. Nancy Greep, M.D.Torrance, CA 905051447203096
  18. Seldon Greer, MDRoseville, CA 956611508944257
  19. Howard Gregersen, M.D.Lompoc, CA 934361467474999
  20. Paul Gregerson, M.D.Los Angeles, CA 900131417022336
  21. Gabriel Gregoratos, MDSan Francisco, CA 941431679522916
  22. Blake Gregory, M.D.Oakland, CA 946021881912129
  23. Gina Gregory-Burns, MDSan Francisco, CA 941151548348162
  24. Russell Greif, D.O.Lancaster, CA 935341669519765
  25. Jonathan Grein, MDLos Angeles, CA 900481295956092
  26. Catherine Grellet, M.D.Los Gatos, CA 950321053418939
  27. Susan Grenz, MDLaguna Woods, CA 926371013989870
  28. Daniel Gretler, MDSan Francisco, CA 941311063586139
  29. Aman Grewal, M.D.French Camp, CA 952311992991392
  30. Amanat Grewal, MDDinuba, CA 936181528795820
  31. Amanpreet GrewalModesto, CA 953551356082242
  32. Jasleen Grewal, MDOrange, CA 928681053739144
  33. Kanwardeep Grewal, M.D.French Camp, CA 952311205854833
  34. Khushdeep Grewal, M.D.Burlingame, CA 940101740509710
  35. Kulraj Grewal, MDMadera, CA 936381033775812
  36. Puneet Grewal, M.D.Tracy, CA 953761750347639
  37. Rajpreet Grewal, MDGrass Valley, CA 959451053723742
  38. Rickinder Grewal, MDAnaheim, CA 928071134288871
  39. Sahib Grewal, MDRedlands, CA 923731962069724
  40. Sajot Grewal, M.D.Corte Madera, CA 949251144230053
  41. Sharon Grewal, MDNorthridge, CA 913241831719624
  42. Sonia Grewal, M.D.Newport Beach, CA 926631154512663
  43. Elizabeth Greyber, MDPalo Alto, CA 943041205924339
  44. Kaveer Greywal, MDSacramento, CA 958171184202178
  45. Natalya Greyz-Yusupov, MDSan Rafael, CA 949031174673982
  46. Barnett Grier, M.D.Los Angeles, CA 900371932233665
  47. Steven Griffen, M.D.Sacramento, CA 958171053393835
  48. Thomas Griffin, M.D.Fresno, CA 937201023038031
  49. Elizabeth Griffiths, M.D.San Francisco, CA 941431821484098
  50. Bianca Grigorian, MDPasadena, CA 911011427053693

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.