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 262 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. Christopher Rice, MDLa Jolla, CA 920371154909687
  2. Donald Rice, M.D.Pleasanton, CA 945661093775157
  3. Howard Rice, MDCupertino, CA 950141114927134
  4. Jeffrey Rice, MDMonterey, CA 939401972699965
  5. Edward Riceberg, M.D.Beverly Hills, CA 902101861558173
  6. Lloyd Rich, M.D.Carmichael, CA 956081780082974
  7. Stephen Rich, MDWindsor, CA 954921730263716
  8. Adam Richards, M.D.Los Angeles, CA 900951780830844
  9. David Richards, M.D.Camp Pendleton, CA 920551265896880
  10. Irina Richards, M.D.Sacramento, CA 958171578722070
  11. Jacqueline Richards, M.D.San Leandro, CA 945771467530212
  12. Devon Richardson, MDTravis Afb, CA 945351114512258
  13. Errisha Richardson, MDAntioch, CA 945091982266649
  14. Kimberly Richardson, MDTorrance, CA 905051063707149
  15. Michael Richardson, MDSan Francisco, CA 941431568661627
  16. Carol Richardson-Te, M.D.Los Angeles, CA 900171558475814
  17. Kyle Richardville, MDSan Francisco, CA 941151316441249
  18. Iman Richie, MDTorrance, CA 905051851040398
  19. Aaron Richler, M.D.Los Alamitos, CA 907201619350337
  20. Sunny Richley, MDBrawley, CA 922271588608475
  21. Kristofer Richter, DO (2011)Modesto, CA 953501336438852
  22. Robert Richter, MDRancho Cordova, CA 956701972682607
  23. Stefan Richter, M.D.Los Angeles, CA 900951538480686
  24. Gary Richwald, MDVenice, CA 902911750604666
  25. Erin Ricketts, MDSan Diego, CA 921031366939118
  26. Vena Ricketts, M.D.Sylmar, CA 913421083711956
  27. Oscar Rico, M.D.Bakersfield, CA 933111013030402
  28. Emily Rider-Longmaid, MDSan Francisco, CA 941431144849027
  29. Hilda Riderer, D.O.Marina Del Rey, CA 902921710358791
  30. Robert Riechmann, M.D.Northridge, CA 913251639145014
  31. Christopher Ried, M.D.Santa Ana, CA 927061740359264
  32. Nardine Riegels, MDOakland, CA 946111871727149
  33. Hugh Rienhoff, MDSan Francisco, CA 941161174663157
  34. David Ries, MDSan Diego, CA 921031376705483
  35. Sherril Rieux, M.D.Beverly Hills, CA 902111427144989
  36. Glen Riewe, MDRiverside, CA 925061336121235
  37. Rifat Rifat, M.D.Westminster, CA 926831669481594
  38. Austin Rifkin, MDPorterville, CA 932571720657042
  39. Bruce Riger, MDYreka, CA 960971124023486
  40. Patricia Riggs, D.O.San Diego, CA 921031780115642
  41. Kathryn Rigonan, MDFountain Valley, CA 927081336234210
  42. Rhodes Rigsby, M.D.Loma Linda, CA 923541619036183
  43. Raveena Rihal, M.D.San Francisco, CA 941141366649824
  44. Marvi Rijhwani, M.D.Walnut Creek, CA 945951386039873
  45. Meena Rijhwani, M.D.Walnut Creek, CA 945971316952799
  46. Nancy Rikalo, M.D.Santa Barbara, CA 931031750727251
  47. Seema Rikhy, MDFremont, CA 945381407945777
  48. Sarah Rikleen, MDRichmond, CA 948011679008296
  49. Matthew Riley, D.O.San Francisco, CA 941171922395490
  50. Rebecca Riley, M.D.La Jolla, CA 920371629085964

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.