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 6 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. Julia Bu, MDSan Diego, CA 921031851852206
  2. Jonathan Bui, MD PHDSan Diego, CA 921231730247974
  3. Szofia Bullain, M.D.Orange, CA 928681730418146
  4. Adrian Burgos, MDWhittier, CA 906021871963603
  5. Margaret Burnett, M.D.Los Angeles, CA 900331679500904
  6. Vivien Burt, MDLos Angeles, CA 900951154347565
  7. Robert Burton, MDSausalito, CA 949651063910669
  8. Ellyn Bush, MDMenlo Park, CA 940251366403776
  9. Michael Butler, M.D.Oakland, CA 946021699825737
  10. Matthew Butrum, MDSan Francisco, CA 941091710187133
  11. John Byer, M.D.Sacramento, CA 958161780690933
  12. Lennox ByerSan Francisco, CA 941431164086534
  13. Erica Byrd, M.D.Roseville, CA 956611598080053
  14. Esther Byun, M.D., MS, MPHLoma Linda, CA 923571770750531
  15. William Cable, MDOrange, CA 928681548340631
  16. Scott Caganap, M.D.Los Angeles, CA 900951962845073
  17. William Cahill, M.D.Fresno, CA 937031760599328
  18. Mateo Calderon Arnulphi, M.D.Los Angeles, CA 900951811159957
  19. Elena Call, M.D.Santa Clara, CA 950511811253776
  20. Robert Calmes, M.D.Fresno, CA 937011730184987
  21. Glynnis Calvin, M.D.Sacramento, CA 958161104137678
  22. Christopher Campos, DOSacramento, CA 958161225534589
  23. Luz Cano, MDNewport Beach, CA 926601619993698
  24. Frank Cantrell, MDFresno, CA 937101528068814
  25. Guillermo Cantu-Reyna, M.D.National City, CA 919501447389101
  26. Toni Cao, MDStanford, CA 943051548634421
  27. Nicholas Capozzoli, M.D.Vacaville, CA 956961508133828
  28. Doris Cardenas, MD.Mission Hills, CA 913451144384116
  29. Alexander Carlin, D.O.Berkeley, CA 947051811429921
  30. Stanley Carmichael, MDLos Angeles, CA 900951093730921
  31. Jesse Carr, M.D.Arcadia, CA 910061407935125
  32. Adrianna Carrasco, MDLos Angeles, CA 900951790425072
  33. Jose Carrillo, MDSanta Monica, CA 904041902006661
  34. Ignacio Carrillo-Nunez, M.D.Long Beach, CA 908131205827201
  35. Charles Casassa, M.D.Loma Linda, CA 923541316328677
  36. John Cassidy, MDSanta Rosa, CA 954031053495036
  37. Peter Cassini, M.D.Palo Alto, CA 943041326088501
  38. Michelle Caunca, MD, PHDSan Francisco, CA 941431346826708
  39. Nicholas Cen, MDOrange, CA 928681770223786
  40. Rita Ceponiene, MDSan Diego, CA 921031356584015
  41. Paul-Henri Cesar, M.D.Los Angeles, CA 900331407957244
  42. Tim Cha, MDTorrance, CA 905051538267901
  43. Dorothee Chabas Chanezon, M.D.San Francisco, CA 941431902832645
  44. Boota Chahil, MDVisalia, CA 932911871668301
  45. Lana Chahine, MDSan Francisco, CA 941581962672238
  46. Pressley Chakales, MDSan Francisco, CA 941171093344988
  47. Jacqueline Chan, M.D., PH.D.Tracy, CA 953761801094032
  48. Joy Chan, M.D.Sepulveda, CA 913431306291794
  49. Kin-Chung Chan, MDMerced, CA 953401639284904
  50. Kwing-Wah Chan, MDRiverside, CA 925051922175736

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.