NPPES file of Aug 9, 2026

Neurological Surgery Physician in California

929 NPPES records list neurological surgery physician with a practice address in California, 2.4 per 100,000 residents, the 32nd highest rate of 51. Los Angeles and Stanford have the most; each record links to the provider's NPI and the California license search. Page 8 of 19.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207T00000X · 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, 112

  1. Los Angeles112
  2. Stanford89
  3. San Francisco77
  4. San Diego61
  5. Sacramento53

Neurological Surgery Physician records in California

  1. Stephen Huhn, MDStanford, CA 943051962539346
  2. Namath Hussain, M.D., MBALoma Linda, CA 923541285845404
  3. Brian Hwang, MDLaguna Hills, CA 926531699087908
  4. Maxine Hyde, M.D.West Hills, CA 913071891718680
  5. Steven Hysell, M.D.Fresno, CA 937011831209394
  6. Julio InocencioDuarte, CA 910101730682550
  7. Darbi Invergo, D.O.French Camp, CA 952311124356381
  8. Alexander Ivanov, M.D.Sacramento, CA 958161285895045
  9. Aditya Iyer, MDMission Hills, CA 913451447695325
  10. Asha Iyer, MD, PHDSacramento, CA 958161831410299
  11. Paul Jackson, MDPalo Alto, CA 943011770651291
  12. Robert Jackson, M.D.Laguna Hills, CA 926531023003605
  13. Gretchen Jacobson, MDOxnard, CA 930301376592733
  14. Rahul Jandial, M.D., PH.D.South Pasadena, CA 910301417108358
  15. Pawel Jankowski, M.D.Irvine, CA 926181093015091
  16. Ramin Javahery, MDLong Beach, CA 908061063562239
  17. Jennifer Jennings, MDSacramento, CA 958191942449244
  18. Michael Jensen, MD, PHDStanford, CA 943051447785662
  19. Sunil Jeswani, M.D.San Diego, CA 921031023359494
  20. Brian Jian, MD PHDSan Francisco, CA 941431114180858
  21. Bowen Jiang, M.D.Fullerton, CA 928351053682971
  22. Ian Johnson, MDFresno, CA 937201407936115
  23. Jeremiah Johnson, M.D.Los Angeles, CA 900951124220231
  24. John Johnson, M.D.Los Angeles, CA 900481881628352
  25. Neil Johnson, M.D.Apple Valley, CA 923071740274380
  26. Walter Johnson, M.D.Loma Linda, CA 923541528096757
  27. Pamela Jones, MDLa Jolla, CA 920931295962025
  28. Thomas Jones, M.D.Santa Barbara, CA 931051508834482
  29. Cecil Jun, MDRedwood City, CA 940631790863389
  30. Theodore Kaczmar, MDSalinas, CA 939011265449136
  31. Melissa Kagnoff, M.D.San Diego, CA 921201679764179
  32. Max Kahn, M.D.Santa Monica, CA 904011053793315
  33. Paul Kaloostian, MDPasadena, CA 911061497894430
  34. Sean KaloostianRiverside, CA 925071750607099
  35. Neeraj Kalra, MBBSStanford, CA 943051609767607
  36. Ari Kappel, M.D.Los Angeles, CA 900331114424116
  37. Spyridon Karadimas, MDStanford, CA 943051972388924
  38. Syed Karim, MD.Stanford, CA 943051619991023
  39. Tejas Karnati, MDSacramento, CA 958171700309168
  40. Dilpreet Kaur, M.D.Modesto, CA 953551639330301
  41. Gurvinder Kaur, MDSalinas, CA 939011255774824
  42. Evren Keles, M.D.San Francisco, CA 941431407872674
  43. Daniel Kelly, MDSanta Monica, CA 904041306857982
  44. Alexander Khalessi, M.D., MSSan Diego, CA 921031073786661
  45. Amer Khalil, MDNewport Beach, CA 926601841466638
  46. Fahd Khan, M.D.San Jose, CA 951241174731095
  47. Maheen Khan, MDOrange, CA 928681144601386
  48. Nadia Khan, MDStanford, CA 943051477712388
  49. Usman Khan, MD, PHDSan Diego, CA 921111568819431
  50. Arjun Khanna, MDSan Diego, CA 921031780079954

Source: CMS NPPES, primary taxonomy 207T00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 32 of 51 per resident

  1. New Hampshire2.5
  2. Kentucky2.5
  3. Oklahoma2.4
  4. California2.4
  5. South Carolina2.4
  6. Idaho2.3
  7. 50 states and D.C.2.6

Source: CMS NPPES, primary taxonomy 207T00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

77.1% of these records appear in a Medicare file, against 78.8% 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. California77.1%
  2. United States78.8%

Neurological Surgery Physician records in California, measured

  • In a Medicare file716 of 929 · 77.1% here, 78.8% nationally
  • In the CMS Doctors and Clinicians file613 · 66.0% here, 65.8% nationally
  • Not updated in five years or more511 · 55.0% here, 52.5% nationally
  • Median graduation year2005 · the 612 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207T00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

929 NPPES records list neurological surgery physician (207T00000X) as their primary taxonomy with a practice address in California: 2.4 per 100,000 residents against 2.6 nationally (50 states and D.C.). Los Angeles has 112 of them (12%).

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. Texas669
  2. Florida644
  3. New York529
  4. Pennsylvania447

States with a similar rate per 100,000

  1. South Carolina2.4
  2. Idaho2.3
  3. Oklahoma2.4
  4. Kentucky2.5

The largest states

  1. Texas669
  2. Florida644
  3. New York529
  4. Pennsylvania447
  5. Illinois375

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.