NPPES file of Aug 9, 2026

Nephrology Physician in California

1,468 NPPES records list nephrology physician with a practice address in California, 3.8 per 100,000 residents, the 22nd highest rate of 51. Los Angeles and San Diego have the most; each record links to the provider's NPI and the California license search. Page 8 of 30.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RN0300X · 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, 151

  1. Los Angeles151
  2. San Diego75
  3. San Francisco70
  4. Sacramento57
  5. Stanford39

Nephrology Physician records in California

  1. Meghana EswarappaSan Francisco, CA 941431104386325
  2. George Fadda, M.D.La Mesa, CA 919421619972247
  3. Mark Fahlen, MDModesto, CA 953501679539415
  4. Michael Fang, M.D.Downey, CA 902411154338580
  5. Danny Farah, MDEncino, CA 914361154416808
  6. Guity Farahmand, MDOakland, CA 946091700017175
  7. Arman Faravardeh, M.D., F.A.C.P.San Diego, CA 921231467410019
  8. Melanie Farrell, M.D.La Jolla, CA 920371144322850
  9. Hadi Fattah, M.D.Murrieta, CA 925631740579440
  10. Stella Feld, M.D.Inglewood, CA 903011144223397
  11. Charles Feldman, MDRedwood City, CA 940631326126913
  12. Vanessa Felix, MDSacramento, CA 958201659382323
  13. Arnold Felsenfeld, M.D.Los Angeles, CA 900731952411159
  14. Jon Ferguson, D.O.Chico, CA 959731902018294
  15. Rodrigo Fernandez, MDChula Vista, CA 919101366539793
  16. Antoney Ferrey, M.D.Orange, CA 928681831458827
  17. Paul Finkel, M.D.Thousand Oaks, CA 913601275533499
  18. Michael Fischman, M.D.Lakewood, CA 908051710326558
  19. John Fisher, M.D.Palmdale, CA 935511699777334
  20. Michael Fisher, MDSanta Barbara, CA 931011063422178
  21. Mary Flowers, MDCarson, CA 907451962418483
  22. Hanlon Fong, MDSan Francisco, CA 941091184607970
  23. Patrick Fong, MDSan Diego, CA 921201508925181
  24. Nanette Fonte, M.D.Lancaster, CA 935341962732974
  25. Ashley Forman, MDFresno, CA 937201205415874
  26. Alan Fozailoff, M.D.Tarzana, CA 913561053331595
  27. Cosmo Fraser, MDYuba City, CA 959911215026760
  28. Lynda Frassetto, M.D.Concord, CA 945201588695472
  29. Gerald Friedman, MDUpland, CA 917861366474322
  30. Stuart Friedman, M.D.Los Angeles, CA 900481679585715
  31. Peter Friend, M.D.La Jolla, CA 920371609825256
  32. Benjamin Fritz, M.D.Santa Rosa, CA 954071265482772
  33. Larry Froch, MDLos Angeles, CA 900481104944727
  34. Ning Fu, M.D.San Jose, CA 951161124224571
  35. Enrica Fung, MDStanford, CA 943051437338951
  36. Maple Fung, M.D.San Diego, CA 921081316901101
  37. Francis Gabbai, M.D.San Diego, CA 921031356356034
  38. Ramin Gabbai, MDWest Hollywood, CA 900481457417248
  39. Lana Gafter, M.D.Roseville, CA 956611376529552
  40. Doris Galina-Da Silva, DORIS GALINADA SILVAAntioch, CA 945091043528979
  41. Brian Gallay, MDSacramento, CA 958171326024001
  42. Claudio Gallego, M.D.San Dimas, CA 917731285649962
  43. Arthur Galoustian, MDRiverside, CA 925051487685426
  44. Dayan Gandhi, M.D, M.SNorthridge, CA 913251285961789
  45. Nirav Gandhi, M.D.Anaheim, CA 928011649263252
  46. Saumil Gandhi, M.D.Santa Paula, CA 930601427057843
  47. Calyani Ganesan, M.D.Stanford, CA 943051548604853
  48. Lakshmi GanesanLoma Linda, CA 923541821356288
  49. Glenn Garbutt, M.D.Fresno, CA 937201063513737
  50. Amarinder Singh Garcha, MBBSFresno, CA 937201770817744

Source: CMS NPPES, primary taxonomy 207RN0300X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 22 of 51 per resident

  1. Texas3.8
  2. Virginia3.8
  3. Georgia3.8
  4. California3.8
  5. South Carolina3.8
  6. Michigan3.7
  7. 50 states and D.C.4.0

Source: CMS NPPES, primary taxonomy 207RN0300X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

88.2% of these records appear in a Medicare file, against 85.8% 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. California88.2%
  2. United States85.8%

Nephrology Physician records in California, measured

  • In a Medicare file1,295 of 1,468 · 88.2% here, 85.8% nationally
  • In the CMS Doctors and Clinicians file1,128 · 76.8% here, 76.0% nationally
  • Not updated in five years or more909 · 61.9% here, 54.9% nationally
  • Median graduation year2001 · the 1,128 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RN0300X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

1,468 NPPES records list nephrology physician (207RN0300X) as their primary taxonomy with a practice address in California: 3.8 per 100,000 residents against 4 nationally (50 states and D.C.). Los Angeles has 151 of them (10%).

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. Texas1,159
  2. New York1,049
  3. Florida840
  4. Pennsylvania651

States with a similar rate per 100,000

  1. South Carolina3.8
  2. Georgia3.8
  3. Virginia3.8
  4. Michigan3.7

The largest states

  1. Texas1,159
  2. New York1,049
  3. Florida840
  4. Pennsylvania651
  5. Illinois572

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.