NPPES file of Aug 9, 2026

Urology Physician in California

1,524 NPPES records list urology physician with a practice address in California, 3.9 per 100,000 residents, the 37th 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 31.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 208800000X · 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, 226

  1. Los Angeles226
  2. San Diego90
  3. San Francisco88
  4. Orange56
  5. Sacramento43

Urology Physician records in California

  1. Robert Naraghi, M.D.Orange, CA 928681306950043
  2. Ramkishen Narayanan, M.D.Burbank, CA 915051215296348
  3. Aurash Naser-Tavakolian, MDLos Angeles, CA 900481598228215
  4. Ryan Nasseri, MDSan Diego, CA 921031841853058
  5. Nima Nassiri, M.D.Los Angeles, CA 900951821450974
  6. Joseph Navon, M.D.Tarzana, CA 913561871664029
  7. Hooman Nazar, D.O.Tarzana, CA 913561184913592
  8. Norman Needel, MDSan Diego, CA 921201447319199
  9. Reza Neil, M.D.Gilroy, CA 950201861489700
  10. Jason Nelles, M.D.Cameron Park, CA 956821164612024
  11. Lauren NesiLos Angeles, CA 900951003497728
  12. Daniel Neustein, MDOakland, CA 946121417016676
  13. Paul Neustein, MDPoway, CA 920641578529731
  14. Harry Neuwirth, M.D.Greenbrae, CA 949041326067919
  15. Frank Newman, MDAnaheim, CA 928071316014327
  16. Elizabeth Newsom, MDSanta Cruz, CA 950651326028853
  17. Casey Ng, M.D.Fontana, CA 923351093911349
  18. Gladys Ng, MD,MPHBurbank, CA 915051164722450
  19. Steven Ngo, MDSan Jose, CA 951241356968606
  20. Tin Ngo, M.D.Mountain View, CA 940401740478775
  21. Aaron Nguyen, M.D.Pomona, CA 917671609863885
  22. Andrew Nguyen, MDLos Angeles, CA 900411821147224
  23. Charles NguyenSan Jose, CA 951241477188696
  24. Hao Nguyen, MDSacramento, CA 958171598922254
  25. Hung Nguyen, M.D.Encinitas, CA 920241023488806
  26. Mike Nguyen, M.D.Los Angeles, CA 900891639146236
  27. Philip Nguyen, PA-CSan Jose, CA 951241669182986
  28. Ziad Niazi, M.D.Redding, CA 960011114998903
  29. Richard Nichols, MDThousand Oaks, CA 913601467404673
  30. Michael NickasCastro Valley, CA 945461770572760
  31. Gary Nicolaisen, MDSan Rafael, CA 949031598849572
  32. Lesli NicolayLoma Linda, CA 923541093917106
  33. Dana Niendorf, MDPetaluma, CA 949541588674147
  34. Farnoosh Nik-Ahd, MDSan Francisco, CA 941431780144568
  35. Ermis Nikas, DOVallejo, CA 945891588742399
  36. Kiavash Nikkhou, M.D.Los Angeles, CA 900331720480916
  37. Kamran Nikravan, MDLos Angeles, CA 900341134296155
  38. Kenneth Nitahara, MDSan Diego, CA 921201861540742
  39. Matthew Nitti, MDSanta Monica, CA 904041346804028
  40. Victor Nitti, M.D.Los Angeles, CA 900951003800806
  41. David Noller, M.D.San Jose, CA 951241922156157
  42. Mark Noller, M.D.San Jose, CA 951241497726095
  43. Justin Nork, D.O.San Diego, CA 921341093897860
  44. Brian Norouzi, M.D.Santa Ana, CA 927061912983818
  45. Michael Norris, M.D.Long Beach, CA 908061114023850
  46. Alex Nourian, MDLos Angeles, CA 900481891289245
  47. Michael Novotny, MD, PHDSacramento, CA 958251811061419
  48. Sepehr Nowfar, M.D.Whittier, CA 906031124174560
  49. Farhad Nowzari, M.D.Torrance, CA 905051225059108
  50. Farshad Nowzari, MD, FACSGardena, CA 902471689741423

Source: CMS NPPES, primary taxonomy 208800000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 37 of 51 per resident

  1. Oklahoma4.0
  2. Iowa4.0
  3. Hawaii4.0
  4. California3.9
  5. Delaware3.8
  6. Arizona3.7
  7. 50 states and D.C.4.3

Source: CMS NPPES, primary taxonomy 208800000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

81.6% of these records appear in a Medicare file, against 79.8% 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. California81.6%
  2. United States79.8%

Urology Physician records in California, measured

  • In a Medicare file1,244 of 1,524 · 81.6% here, 79.8% nationally
  • In the CMS Doctors and Clinicians file1,050 · 68.9% here, 66.7% nationally
  • Not updated in five years or more902 · 59.2% here, 57.2% nationally
  • Median graduation year2003 · the 1,049 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 208800000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

1,524 NPPES records list urology physician (208800000X) as their primary taxonomy with a practice address in California: 3.9 per 100,000 residents against 4.3 nationally (50 states and D.C.). Los Angeles has 226 of them (15%).

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 York1,091
  2. Florida1,020
  3. Texas960
  4. Pennsylvania663

States with a similar rate per 100,000

  1. Hawaii4.0
  2. Iowa4.0
  3. Oklahoma4.0
  4. Delaware3.8

The largest states

  1. New York1,091
  2. Florida1,020
  3. Texas960
  4. Pennsylvania663
  5. Illinois629

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.