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 17 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. Ashley Martinez, MDStanford, CA 943051841720091
  2. Gregory Martinez, M.D.Fresno, CA 937201982863098
  3. Marco Martinez, M.D.Cudahy, CA 902011700924909
  4. Hamik Martirosyan, MDRiverside, CA 925051316014145
  5. Tarun Marwaha, M.D.Fountain Valley, CA 927081407964976
  6. Dorsa Maryska, M.D.Montebello, CA 906401851598866
  7. Ardavan Mashhadian, D.O.Los Angeles, CA 900151003132523
  8. Sheikh Masood, M.D.Madera, CA 936371669422812
  9. Amy Matayoshi, M.D.Oceanside, CA 920561417921982
  10. Allen Mathew, MDEureka, CA 955011417053075
  11. Roy Mathew, M.D.Loma Linda, CA 923571740298033
  12. Vandana Mathur, M.D.Woodside, CA 940621699078915
  13. Aung Kyaw Maung, M.DDaly City, CA 940151518288877
  14. Thin Thin Maw, MDLos Angeles, CA 900331932361177
  15. Randall Maxey, MD PHDInglewood, CA 903011700944279
  16. Sami Mazbar, MDSanta Clara, CA 950511134206063
  17. Kelly Mazurek, M.D.San Diego, CA 921231487915203
  18. Marcia McCampbell, M.D.Redding, CA 960011205845765
  19. Peter McCauley, MDBakersfield, CA 933081629189113
  20. Cody McCoy, DOSacramento, CA 958171043898604
  21. Ian McCoy, M.D.San Jose, CA 951161437597747
  22. Patrick McGlynn, MDMountain View, CA 940401124317540
  23. Gela McHedlishvili, MDNorth Hollywood, CA 916071942418017
  24. Dianne McKay, M.D.La Jolla, CA 920371700857976
  25. James McMillan, M.D.Loma Linda, CA 923571700988219
  26. Leena Mehandru, M.D.Pleasanton, CA 945881427096452
  27. Nicolas Mehis, D.O.Reseda, CA 913351770995466
  28. Arvind Mehta, MDLong Beach, CA 908061518985613
  29. Jiten Mehta, D0Orange, CA 928681861912289
  30. Kalyani Mehta, MDGranada Hills, CA 913441699899724
  31. Ravindra Mehta, MDSan Diego, CA 921031295818102
  32. Parag Mehtani, M.D.San Bernardino, CA 924041770773160
  33. Susana Mendoza, M.D.Los Angeles, CA 900271255463592
  34. David Menke, MDSan Francisco, CA 941151306924907
  35. Sanjay Menon, MDSanta Rosa, CA 954071407315633
  36. Lucille Mercado, MDSouth San Francisco, CA 940801770661266
  37. Raffi Merjanian, MDBellflower, CA 907061649347477
  38. Azita Mesbah, MDIrvine, CA 926181184670630
  39. David Metz, M.D.Madera, CA 936361780671610
  40. Jill Meyer, MDChula Vista, CA 919111255394789
  41. Timothy Meyer, MDPalo Alto, CA 943041801998661
  42. Carlos Meza, M.D.Monterey Park, CA 917541063592269
  43. Hatem MezherSanta Maria, CA 934541467716274
  44. Maria Miguel Yen, M.D.Sacramento, CA 958171740266626
  45. Nichole Mihara, MDBaldwin Park, CA 917061538230578
  46. Lucy Miller, M.D.La Mesa, CA 919421467458620
  47. Nancy Miller, M.D.San Diego, CA 921341104972520
  48. Terina Miller, MDBerkeley, CA 947051669579348
  49. James Min, DOWoodland Hills, CA 913671073855961
  50. Raffi Minasian, MDGlendale, CA 912041306860465

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.