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 7 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. Mikayel Grigoryan, M.D.Glendale, CA 912061801003686
  2. Jeffrey Gross, M.D.Laguna Niguel, CA 926771407961188
  3. John Gruen, M.D.Los Angeles, CA 900331194769570
  4. Jian Guan, M.D.Torrance, CA 905031811262009
  5. Afrassiab Guity, M.D.Redding, CA 960021285725812
  6. Kern Guppy, MDSacramento, CA 958251518045251
  7. Nalin Gupta, MDSan Francisco, CA 941431811955438
  8. Saksham Gupta, MD, PHDStanford, CA 943051205396090
  9. Akshay Gupte, M.B.B.S. M.P.H.Oxnard, CA 930361831416049
  10. Raphael Guzman, M.D.Stanford, CA 943051366639858
  11. Gus Halamandaris, MDSalinas, CA 939011083621957
  12. Youssef Hamade, M.D.Loma Linda, CA 923501639559396
  13. Nathan Han, MDSan Francisco, CA 941431417484569
  14. Seunggu Han, MDStanford, CA 943051588980023
  15. Brian Hanak, MDLoma Linda, CA 923541306137625
  16. George Hanna, M.D.West Hollywood, CA 900481609212281
  17. Ake HansasutaStanford, CA 943051356578587
  18. Tyrone Hardy, MDLa Mesa, CA 919421174739460
  19. Bettina Harner, MDModesto, CA 953551043268857
  20. Ciara Harraher, MDPalo Alto, CA 943041336469659
  21. John Harris, M.D.Pebble Beach, CA 939531093928277
  22. Odette Harris, MDStanford, CA 943051144237009
  23. Todd Harshbarger, M.D.Burbank, CA 915051366649089
  24. Dustin Hatefi, M.D., M.P.H.San Diego, CA 921031790072106
  25. Mark Hawk, MDSacramento, CA 958251720166432
  26. Vidya HawkinsLos Angeles, CA 900891760682330
  27. Melanie Hayden Gephart, MDStanford, CA 943051518125210
  28. Tina Hedayat, M.DFrench Camp, CA 952311477841492
  29. Gregory Helbig, M.D.Modesto, CA 953561972761211
  30. Jaimie Henderson, MDStanford, CA 943051881749513
  31. Benjamin Hendricks, MDSan Luis Obispo, CA 934051295180461
  32. Deborah Henry, M.D.Newport Beach, CA 926631407879950
  33. James Herman, MDVentura, CA 930031952396491
  34. Shawn Hervey-Jumper, M.D.San Francisco, CA 941431104945542
  35. Jay Hess, MDMountain View, CA 940401831205541
  36. Tauno Hill, MDSan Bernardino, CA 924041326113325
  37. Brian Hirshman, M.D.San Diego, CA 921031487107454
  38. Daniel Hirt, MDLos Angeles, CA 900271427347210
  39. Alison HoSacramento, CA 958171245628510
  40. Hector Ho, MDFullerton, CA 928351912969353
  41. Joseph Ho, M.D., PH.D.Burbank, CA 915051487782009
  42. John Holly, M.D.Los Angeles, CA 900151851490387
  43. Langston Holly, MDLos Angeles, CA 900951063437192
  44. Yusuke Hori, MDStanford, CA 943051578042354
  45. Lewis Hou, M.D.Stanford, CA 943051992985634
  46. Kevin Hsieh, M.D.Sacramento, CA 958161689864506
  47. Patrick Hsieh, MDLos Angeles, CA 900331942405956
  48. Frank Hsu, M.D.Orange, CA 928681548298417
  49. Sherwin Hua, M.D.Campbell, CA 950081174546766
  50. Michael Huang, M.D.San Francisco, CA 941101760633770

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.