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 16 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. William Sheridan, MDRedwood City, CA 940631326126970
  2. William Sherman, M.D.Los Angeles, CA 900331922282268
  3. Jessica ShieldsPalm Springs, CA 922621679960140
  4. Anne Sholes, MDSacramento, CA 958161003921388
  5. Lawrence Shuer, MDStanford, CA 943051386701159
  6. Javed Siddiqi, MDColton, CA 923241407963176
  7. Khawar Siddique, M.D.Los Angeles, CA 900481548214570
  8. James Silverthorn, M.D.Sacramento, CA 958171780662080
  9. Robert Simons, MDFresno, CA 937201528175940
  10. Soren Singel, M.D.San Jose, CA 951161457360901
  11. Harminder SinghSan Jose, CA 951281235347865
  12. Jonathan Sisti, MDLos Angeles, CA 900331013365964
  13. Alan Siu, MDVentura, CA 930031306073457
  14. Walavan Sivakumar, M.D.Torrance, CA 905031952627911
  15. Stephen Skirboll, MDStanford, CA 943051346359262
  16. Nicholas Slimack, MDSanta Maria, CA 934541265743884
  17. Minwoo Song, MDStanford, CA 943051215434816
  18. M Soumekh, M.D.San Diego, CA 921231265495014
  19. Derek Southwell, MD, PHDSan Francisco, CA 941431316236912
  20. Mark Spicer, PH.D., M.D.Murrieta, CA 925631619905684
  21. Justin Spooler, M.D.Loma Linda, CA 923541962619924
  22. Philip Starr, MDSan Francisco, CA 941431669439246
  23. Haley StauberLaguna Hills, CA 926531154962066
  24. Richard Stea, MDAnaheim, CA 928071508914557
  25. Tyler Steed, M.D., PH.D.San Diego, CA 921231881127199
  26. Gary Steinberg, MDPalo Alto, CA 943051013074277
  27. Jeffrey Steinberg, M.D.San Diego, CA 921031982044715
  28. Mark Stern, MDEscondido, CA 920251649282765
  29. Martin Stienen, MDStanford, CA 943051912482365
  30. Eric Stiner, M.D.Los Angeles, CA 900951396984902
  31. Shirley Stiver, MD PHDSan Francisco, CA 941101508810904
  32. Kenneth Stover, DOSan Diego, CA 921031891126090
  33. Ben Strickland, MDLos Angeles, CA 900331003232802
  34. Michael Stuart, MBBSStanford, CA 943051710773478
  35. Alexander Suarez, MDSan Francisco, CA 941431083110290
  36. Peter Sun, M.D.Oakland, CA 946091972590354
  37. Narayana Swamy, M.D.,Travis Afb, CA 945351295749539
  38. Raed Sweiss, DOMoreno Valley, CA 925551881858553
  39. Benjamin Szewczyk, M.D., M.S.Los Angeles, CA 900951134651136
  40. Ivar Szper, MDLong Beach, CA 908061457305658
  41. Asher Taban, M.D.Northridge, CA 913251588619357
  42. Peyman TabriziSanta Ana, CA 927071154362499
  43. Derek Taggard, M.D.Fresno, CA 937201548242589
  44. Moses Taghioff, M.D.Pleasanton, CA 945661770796765
  45. Alexander Taghva, M.D.Mission Viejo, CA 926911548439920
  46. Ariel Takayanagi, DOStanford, CA 943051023501582
  47. Idit TamirSan Francisco, CA 941431265988315
  48. Lee Tan, M.D.San Francisco, CA 941431295056802
  49. Gordon Tang, M.D.Berkeley, CA 947051063481588
  50. Lokesh Tantuwaya, M.D.San Diego, CA 921111124066097

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.