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 19 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. Subrahmanyam Nasika, M.D.Stockton, CA 952101548449846
  2. Sohail Nasim, M.D.West Hills, CA 913071174623920
  3. Tanzina Nasreen, M.D.Los Alamitos, CA 907201649454638
  4. Shahriare Nasser-Moaddeli, M.D.Whittier, CA 906021902811391
  5. Ashok Nath, M.D.,San Bernardino, CA 924041992951115
  6. Ramani Nathan, MDGarden Grove, CA 928431487623724
  7. Magdy Nawar, MDMission Viejo, CA 926911881799096
  8. Henry Nebeker, MDBurbank, CA 915021881684850
  9. Michael Neinast, DOOrange, CA 928681770105769
  10. Amir Nejad, M.D.San Diego, CA 921231467683136
  11. Russell Ness, MDGarden Grove, CA 928431770552978
  12. Bryan Ney, MDLos Angeles, CA 900341669549663
  13. Mohammed Neyaz, D.O.Escondido, CA 920251245459973
  14. Lauren Ng, M.D.Antioch, CA 945311841640109
  15. Phillip Ng, MDRedwood City, CA 940621295766178
  16. An Nguyen, MDFontana, CA 923351093882813
  17. Anthony Nguyen, DOSan Diego, CA 921031508485277
  18. Charles Nguyen, M.D.Eastvale, CA 917521538400288
  19. Huyen Nguyen, M.D.Travis Afb, CA 945351528502895
  20. Jim Nguyen, D.O.San Dimas, CA 917731417338898
  21. Lawrence Nguyen, DOOrange, CA 928681932627874
  22. Minhtri Nguyen, MDLos Angeles, CA 900951538189204
  23. Sonny Nguyen, MDOakland, CA 946111588198204
  24. Thanh Nguyen, MDGarden Grove, CA 928441508885625
  25. Thanh Nguyen, M.D.Merced, CA 953401346419918
  26. Thuy NguyenRichmond, CA 948011790092732
  27. Tuan Nguyen, DOWestminster, CA 926831164959185
  28. Tuan Nguyen, M.D.Sacramento, CA 958251831325174
  29. Viet Nguyen, M.D.San Diego, CA 921081184019051
  30. Susanne Nicholas, MDLos Angeles, CA 900951972523512
  31. Anthony Nicolaysen, MDMission Hills, CA 913451154869576
  32. Sankar Niranjan, MDStanford, CA 943051497752802
  33. Rajendra Niraula, MDOxnard, CA 930361922201003
  34. Humera Nisar, MDSan Francisco, CA 941431164685863
  35. Allen Nissenson, MDLos Angeles, CA 900951902827371
  36. Paul Niu, M.D.Corona, CA 928811952336216
  37. Grace No, MDSan Jose, CA 951161386865731
  38. Niloofar Nobakht, M.D,Los Angeles, CA 900951811123151
  39. Sayna Norouzi, M.D.Loma Linda, CA 923541649666041
  40. Donald Nortman, MDLos Angeles, CA 900481780739896
  41. Saeid Nosrati, M.D.Los Angeles, CA 900331245266618
  42. Mariam Nour EldineLos Angeles, CA 900891851214837
  43. Aleksandra Novikov, M.D.San Diego, CA 921031336440957
  44. Ronald Nudelmar, MDLos Angeles, CA 900251477647683
  45. Abdul Nuristani, M.D.Sacramento, CA 958211245467273
  46. Uchenna NwosuOakland, CA 946111881199727
  47. Ann O'Hare, MDCorte Madera, CA 949251033294020
  48. Michelle O'Shaughnessy, MDPalo Alto, CA 943041588025431
  49. Shota Obata, MDPalo Alto, CA 943051326772096
  50. Golaun Odabaei, M.DBerkeley, CA 947051306072640

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.