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 32 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. Arbi Ohanian, M.D.Pasadena, CA 911051982894606
  2. Stephen Ohara, MDLos Angeles, CA 900481235155490
  3. Mahyar Okhovat, MDLos Angeles, CA 900251215953476
  4. John Olichney, M.D.San Diego, CA 921031689699969
  5. Edgar Olivas, MDArcadia, CA 910071770902611
  6. Ricardo Olivo, M.D.Murrieta, CA 925621154647014
  7. Adel Olshansky, M.D.West Hills, CA 913071063694115
  8. Sylvia Olvera, M.D.Los Angeles, CA 900481679913073
  9. Shaida OmidOrange, CA 928681295358414
  10. Omid Omidvar, M.D.Los Alamitos, CA 907201184678583
  11. Antonio Omuro, MDStanford, CA 943051912175134
  12. Arthur Omuro, D.O.Carlsbad, CA 920111851785505
  13. Boniface Onubah, M.D.Westminster, CA 926831013131390
  14. Lauren Oommen, D.OOakland, CA 946021639319718
  15. Harry Openshaw, MDDuarte, CA 910101154438943
  16. Carl Orfuss, M.D.Los Angeles, CA 900951295751451
  17. Christopher Orlando, MDLos Angeles, CA 900331033774310
  18. Divina Oropilla, MDAnaheim, CA 928071891854485
  19. Idelisse Ortiz Torres, MD PHDSan Francisco, CA 941431720541626
  20. Andrew Osborne, MDLos Angeles, CA 900481639806433
  21. Abha Oshtory, MDStockton, CA 952041558332999
  22. Meherji Oshtory, MDStockton, CA 952041073588091
  23. Anton OstashkoMountain View, CA 940401134617459
  24. Jill Ostrem, MDSan Francisco, CA 941431013948751
  25. Shirley Otis, M.D.La Jolla, CA 920371568424661
  26. Behzad Ourmazdi, M.D.Camarillo, CA 930121861431314
  27. Margarita Oveian, MDBurbank, CA 915051144329608
  28. A Overfield, M.D.Travis Afb, CA 945351033107727
  29. Nelson Owyoung, M.D.Alhambra, CA 918011073543641
  30. Bindu Padmanabha, M.D.Vallejo, CA 945891164865804
  31. Remia Paduga, MDCarlsbad, CA 920111194933853
  32. Eugene PahkPanorama City, CA 914021104350271
  33. Vivek Pai, MDVallejo, CA 945891225116064
  34. Peony PakLos Angeles, CA 900951659735074
  35. Stefano Pallanti, M.D.Stanford, CA 943051932539038
  36. George Palma, MDRoseville, CA 956611760560437
  37. Bianca Palushaj, MDStanford, CA 943051295296515
  38. John Panagotacos, M.D.Kentfield, CA 949041982895108
  39. Lori Panossian, MDMartinez, CA 945531134380918
  40. Richard Pantera, MDVisalia, CA 932911457461725
  41. Leila Parand, MDLos Angeles, CA 900951174927594
  42. Mercedes Paredes, MD, PHDSan Francisco, CA 941431629222534
  43. Kimberly Pargeon, MDTorrance, CA 905021588791933
  44. Palak ParikhSacramento, CA 958171295909331
  45. James Park, D.O.Huntington Beach, CA 926471306871421
  46. James Park, D.O.Newport Beach, CA 926631114276854
  47. Kyung Park, M.D.Stanton, CA 906801942210570
  48. Sung-Un Park, MDAnaheim, CA 928041649298084
  49. John Parker, M.D.Whittier, CA 906011386088698
  50. Karen Parko, M.D.San Francisco, CA 941211053404517

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.