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 20 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. Adetokunbo Odunaiya, MDStanford, CA 943051821302571
  2. Opeyemi Oladele, M.D.Victorville, CA 923951801154380
  3. John Ong, DOFountain Valley, CA 927081477056406
  4. Steven Ong, MDFairfield, CA 945341225006349
  5. Kyin Oo, MDFresno, CA 937031558328237
  6. Juan Ordonez, MDOakland, CA 946111720166507
  7. Olu Oredugba, MDInglewood, CA 903011215975115
  8. Olivia OrtezaSacramento, CA 958251316395569
  9. Ana Cecilia Ortiz-Guerrero, MDTorrance, CA 905051275776536
  10. Tilden Osako, MDBellflower, CA 907061245388222
  11. Farid Osman, MDPetaluma, CA 949541962423103
  12. Justin Oveyssi, D.O.West Hollywood, CA 900481093248999
  13. Kar Own, MDVallejo, CA 945891558449454
  14. Paul Ozuzun, M.D.Newport Beach, CA 926631972868347
  15. Michael Pablos Quiles, M.D.Beverly Hills, CA 902111841738291
  16. David Packard, MDMission Viejo, CA 926911558307173
  17. Maria Pagtalunan, MDBerkeley, CA 947051629175310
  18. Madeleine Pahl, MDOrange, CA 928681992885131
  19. Firooz Pak, M.D.Los Angeles, CA 900451568462364
  20. Mary Palathumpat, MDFremont, CA 945381225113988
  21. Viraj Pandit, MDFresno, CA 937201992125272
  22. Jason Pang, M.D.Laguna Hills, CA 926531679644181
  23. Alan Pao, MDStanford, CA 943051124057252
  24. Vartan Papazian, D.O.Reseda, CA 913351093126088
  25. Lamioko Pappoe, M.D.Los Angeles, CA 900331356312953
  26. Victor Pappoe, MDPomona, CA 917671396781969
  27. Sahil Parag, DOBeverly Hills, CA 902111629605001
  28. Rekha Pareek, MDSacramento, CA 958251497833123
  29. Nakul Parimoo, M.D.Bakersfield, CA 933091801838230
  30. Alice Park, M.D.Long Beach, CA 908061649336298
  31. Janice Park, M.D.Sacramento, CA 958171225356959
  32. Meyeon Park, MDSan Francisco, CA 941431508041187
  33. Chong Parke, M.D.Los Angeles, CA 900331992969331
  34. Khosrow Parsa, M.D.Torrance, CA 905051194727321
  35. Ram Patak, M.D.Northridge, CA 913241144218488
  36. Amar Patel, M.D.Chula Vista, CA 919101821359605
  37. Amir Patel, DOLos Angeles, CA 900271891324810
  38. Bijal Patel, M.D.San Diego, CA 921231639266026
  39. Jignesh Patel, MDSacramento, CA 958251114005832
  40. Kajal Patel, M.D.San Jose, CA 951161366630444
  41. Kalpesh Patel, M.D.Calabasas, CA 913021902099146
  42. Keyur Patel, MDVallejo, CA 945891942388772
  43. Mital Patel, MDGarden Grove, CA 928431609223361
  44. Monika Patel, DORoseville, CA 956611700061017
  45. Parul Patel, MDSan Francisco, CA 941091528262870
  46. Samir Patel, MDGarden Grove, CA 928431427519552
  47. Sapna Patel, MDLong Beach, CA 908061710140561
  48. Shailesh Patel, MDAnaheim, CA 928071982771994
  49. Shweta Patel, M.D.Santa Rosa, CA 954031255566063
  50. Sunil Patel, D.O.Apple Valley, CA 923071134274012

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.