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 68 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. Zoltan Csuka, MDNewport Beach, CA 926601679539951
  2. Johny Cu, MDWest Covina, CA 917901336223569
  3. Joseph Cu, M.D.San Jose, CA 951481912086364
  4. Anastasia Cua, MDOakland, CA 946111619055498
  5. Seung Sue Cua, MDWest Covina, CA 917901063513661
  6. Nancy Cuan, MDStanford, CA 943051891764791
  7. Louis Cubba, MDSan Francisco, CA 941141649201716
  8. Russell Cucina, MDSan Francisco, CA 941431285699603
  9. Kirth Cucueco, MDRedwood City, CA 940631306209275
  10. Eric CuiMonterey Park, CA 917541003342395
  11. Chung Cuiffo, M.D.Orange, CA 928681659630556
  12. John Culbertson, M.D.San Anselmo, CA 949601649219833
  13. Esme Cullen, MD, MPHOakland, CA 946111396109310
  14. Jeffrey Cullen, M.D.San Diego, CA 921111356409411
  15. Steven Cullen, MDSan Clemente, CA 926731487765731
  16. Susan Cumming, M.D.Greenbrae, CA 949041548285075
  17. Anne Cummings, M.D.Greenbrae, CA 949041619917028
  18. Cassie Cummings, MDSan Francisco, CA 941181548955370
  19. Dean Cummings, MDMountain View, CA 940401265454029
  20. Douglas Cummings, M.D.Santa Barbara, CA 931111407876774
  21. Kristin Cummings, MDAnaheim, CA 928061700997095
  22. Ralph Cummings, MDLaguna Hills, CA 926531003941246
  23. Arthur Cummins, M.D.San Diego, CA 921031255770764
  24. Marcus Cummins, MDFresno, CA 937011033718507
  25. Tony CunSan Carlos, CA 940701871988949
  26. Michele Cunneen, M.D.Ventura, CA 930031619986882
  27. Ryan CunninghamTemecula, CA 925921245814870
  28. Nicole Curatola, MDMountain View, CA 940401215427810
  29. Eric Curcio, M.D.Santa Monica, CA 904041467643700
  30. Argenis Curiel, MDFresno, CA 937221134748163
  31. Brian Curley, M.DChula Vista, CA 919131700081569
  32. Evelyn Curls, M.D.Los Angeles, CA 900161235438946
  33. Amanda Curnock, MDLa Quinta, CA 922531447228796
  34. Justin CurranRiverside, CA 925011932737178
  35. Jennifer Curtin, M.D.El Segundo, CA 902451609210772
  36. Jane Curtis, M.D.Santa Ana, CA 927051518018217
  37. Natalie Curtis, MDOakland, CA 946021659799864
  38. Tiffany Cushing, MDDowney, CA 902421265004303
  39. Gina Cushman, NMDNewport Beach, CA 926601396108130
  40. Adam Custer, MDLos Angeles, CA 900951114421724
  41. Goran Cvijanovic, MDFallbrook, CA 920281427393941
  42. Christopher Cybulski, MDPanorama City, CA 914021255408159
  43. Ralph Cygan, MDOrange, CA 928681942219704
  44. Kevin Cyr, MDWest Hollywood, CA 900481487396651
  45. Gregory Czer, MDChula Vista, CA 919111932218963
  46. Joseph Czvik, MDSan Marcos, CA 920781528084340
  47. Vivien D'Andrea, MDMountain View, CA 940401760497135
  48. Geoffrey D'Cruz, M.D.Sacramento, CA 958171780001974
  49. Jeremy D'Morias, MDFresno, CA 937301073831798
  50. Anthony D'Oro, MDLos Angeles, CA 900951114620747

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.