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 19 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. Aaron Yengo-Kahn, MDOrange, CA 928681245684562
  2. Benjamin Yim, M.D.Walnut Creek, CA 945981598176604
  3. Jang Yoon, MDSan Francisco, CA 941431518224492
  4. Youngwon Youn, MDLos Angeles, CA 900951316434145
  5. Jacob YoungSan Francisco, CA 941431831622893
  6. Richard Young, M.D.Pomona, CA 917671679700744
  7. John Yu, M.D.Los Angeles, CA 900481043294010
  8. Xiao-Quan Yuan, M.D.Los Angeles, CA 900591790793370
  9. John Yue, MDSan Francisco, CA 941431255825105
  10. Ichiro Yuki, MDOrange, CA 928681205312642
  11. Marcus Zachariah, M.D., PH.D.San Diego, CA 921111477817187
  12. Gabriel Zada, M.D.Los Angeles, CA 900331871768556
  13. Nirmeen Zagzoog, MSC, MD, PHDPalo Alto, CA 943041427937796
  14. Hesham Zakaria, MDSan Francisco, CA 941091932545316
  15. Samer Zammar, M.D.San Francisco, CA 941431952788770
  16. Bijan Zardouz, M.D.Santa Ana, CA 927071679621726
  17. Nina Zasorin, MDLos Angeles, CA 900591952437626
  18. Alois Zauner, MDSan Diego, CA 921031922023720
  19. Paul Zeltzer, MDLos Angeles, CA 900951851404511
  20. Angie Zhang, MDOrange, CA 928681669933990
  21. Michael ZhangSan Francisco, CA 941091972967917
  22. Xiaoran Zhang, M.D.Danville, CA 945261437508256
  23. Tianzan Zhou, M.D.Torrance, CA 905051760845044
  24. Laura ZimaSan Francisco, CA 941431730641663
  25. Alexander Zouros, M.D.Loma Linda, CA 923541619913548
  26. John Zovickian, MDOakland, CA 946111336227115
  27. Edie Zusman, MDFairfield, CA 945331629178637
  28. Marike Zwienenberg, M.D.Sacramento, CA 958171205814506
  29. Corinna Zygourakis, M.D.Palo Alto, CA 943041235456476

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.