NPPES file of Aug 9, 2026

Neurology Physician in California

2,339 NPPES records list neurology physician with a practice address in California, 6 per 100,000 residents, the 27th highest rate of 51. Los Angeles and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 31 of 47.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 2084N0400X · 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, 351

  1. Los Angeles351
  2. San Francisco267
  3. San Diego125
  4. Sacramento114
  5. Stanford78

Neurology Physician records in California

  1. Mani Nezhad, M.D.Oxnard, CA 930301669716387
  2. Jessica Ng, MDStanford, CA 943051285111237
  3. Phioanh Nghiemphu, MDLos Angeles, CA 900951871519017
  4. Angeline Ngo, MDMountain View, CA 940401215565007
  5. Hiep Ngo, M.D.San Jose, CA 951261497763536
  6. Tawny Ngo, M.D.La Jolla, CA 920371104025204
  7. Vincent Trung Ngo, MDStockton, CA 952091295350551
  8. Alvin NguyenMission Hills, CA 913451568856235
  9. Brian Nguyen, MDLoma Linda, CA 923541063975340
  10. Christopher Nguyen, MDBurbank, CA 915051427519537
  11. Dai Nguyen, MD, MBASacramento, CA 958171063034650
  12. David Nguyen, D.O.San Diego, CA 921201891050712
  13. Ivy Nguyen, MDSacramento, CA 958161053739425
  14. Jaclyn Nguyen, MDPalo Alto, CA 943041699312157
  15. Michelle NguyenOrange, CA 928681043896715
  16. Peggy Nguyen, M.D.Los Angeles, CA 900331306145560
  17. Peter Nguyen, M.D., PH.D.Santa Barbara, CA 931051306104633
  18. Mai Nguyen-Huynh, M.D.San Francisco, CA 941431043232465
  19. Bindi Nia, DOCalabasas, CA 913021225551146
  20. Paul Nicholas, MDSanta Rosa, CA 954011699861344
  21. Esther Nie, MD, PHDStanford, CA 943051104315738
  22. Amy Nielsen, D.O.La Jolla, CA 920371730110529
  23. Yih-Lin Nien, M.D.Torrance, CA 905031821204314
  24. Galina Nikolskaya, M.D.San Diego, CA 921031457620965
  25. Robert Nishimura, MDSylmar, CA 913421265467500
  26. Janne Nissinen, M.D.La Jolla, CA 920371710278569
  27. Stephen Nnodim, MDFremont, CA 945381396199105
  28. Will North, MDSan Leandro, CA 945771992883755
  29. Fred Nour, MDMission Viejo, CA 926911881629350
  30. Josh Novic, MDSanta Cruz, CA 950651306826847
  31. Justin Nowell, M.D.San Diego, CA 921011629504147
  32. Monica Noya Santana, M.D.Monterey, CA 939401598297228
  33. Achillefs Ntranos, MDBeverly Hills, CA 902101679913586
  34. Kenneth Nudleman, MDSanta Ana, CA 927051558324145
  35. Adam NumisLos Angeles, CA 900951093943508
  36. Karen Nunez-Wallace, MDHuntington Beach, CA 926461811121197
  37. Marc Nuwer, MDLos Angeles, CA 900951578589727
  38. Alvin Nyaboga, MDLos Angeles, CA 900951982233813
  39. Christopher O'Carroll, M.D.Newport Beach, CA 926631720187487
  40. Edward O'Connor, M.D.Santa Monica, CA 904031568466555
  41. David O'Dell, MDWalnut Creek, CA 945961629156708
  42. Kevin O'Dell, MDManteca, CA 953371295813004
  43. Nancy Ann Oberheim Bush, M.D. PH.D.San Francisco, CA 941431730479577
  44. Michael Obrien, M.D.Redding, CA 960011952382228
  45. Leslie Ocampo, MDTorrance, CA 905021922689868
  46. Andrew Oh, M.D.Citrus Heights, CA 956101508884859
  47. Daniel Oh, MDLos Angeles, CA 900331861997637
  48. Haeryong Oh, M.D.Long Beach, CA 908151225206881
  49. Irene Oh, M.D.Carlsbad, CA 920111306089008
  50. Michael Oh, M.D.Ontario, CA 917611972763555

Source: CMS NPPES, primary taxonomy 2084N0400X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 27 of 51 per resident

  1. Arizona6.2
  2. South Carolina6.1
  3. Maine6.0
  4. California6.0
  5. North Dakota5.7
  6. North Carolina5.7
  7. 50 states and D.C.6.5

Source: CMS NPPES, primary taxonomy 2084N0400X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

80.7% of these records appear in a Medicare file, against 81.2% 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. California80.7%
  2. United States81.2%

Neurology Physician records in California, measured

  • In a Medicare file1,888 of 2,339 · 80.7% here, 81.2% nationally
  • In the CMS Doctors and Clinicians file1,628 · 69.6% here, 68.3% nationally
  • Not updated in five years or more1,287 · 55.0% here, 50.3% nationally
  • Median graduation year2006 · the 1,628 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2084N0400X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

2,339 NPPES records list neurology physician (2084N0400X) as their primary taxonomy with a practice address in California: 6 per 100,000 residents against 6.5 nationally (50 states and D.C.). Los Angeles has 351 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 York1,778
  2. Florida1,530
  3. Texas1,382
  4. Pennsylvania1,077

States with a similar rate per 100,000

  1. Maine6.0
  2. South Carolina6.1
  3. Arizona6.2
  4. New Jersey6.2

The largest states

  1. New York1,778
  2. Florida1,530
  3. Texas1,382
  4. Pennsylvania1,077
  5. Massachusetts964

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.