NPPES file of Aug 9, 2026

Anesthesiology Physician in California

7,571 NPPES records list anesthesiology physician with a practice address in California, 19 per 100,000 residents, the 18th highest rate of 51. Los Angeles and San Diego have the most; each record links to the provider's NPI and the California license search. Page 97 of 152.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207L00000X · 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, 762

  1. Los Angeles762
  2. San Diego686
  3. San Francisco499
  4. Sacramento396
  5. Stanford387

Anesthesiology Physician records in California

  1. Kelvin Nguyen, M.D.Orange, CA 928691699861146
  2. Kenneth NguyenMoreno Valley, CA 925551275113920
  3. Kevin Nguyen, MDSacramento, CA 958171770073801
  4. Kim-Anh Nguyen, M.D.Orange, CA 928681134456437
  5. Kinh-Vy Nguyen, MDOrange, CA 928681467081950
  6. Liem Nguyen, MDSan Diego, CA 921031598910333
  7. Lincoln Nguyen, MDLos Angeles, CA 900891114676277
  8. Lisa Nguyen, DOOrange, CA 928681902395213
  9. Loc Nguyen, MDFontana, CA 923351104026509
  10. Long Nguyen, M.D.Pomona, CA 917671457387235
  11. Michael Nguyen, DODowney, CA 902411326036708
  12. Michael Nguyen, D.ODowney, CA 902411710901129
  13. Michael Nguyen, M.D.San Diego, CA 921231215293410
  14. Michelle Nguyen, M.D.San Francisco, CA 941431043410681
  15. Minh Nguyen, D.O.Fresno, CA 937201316276355
  16. Nhi Nguyen, DOSacramento, CA 958211699302414
  17. Paul NguyenSan Francisco, CA 941431881337061
  18. Phuoc Nguyen, MDSan Dimas, CA 917731770556821
  19. Quoc-Sy Nguyen, M.D.San Diego, CA 921031871911644
  20. Raymond Nguyen, M.D.Lancaster, CA 935341316149511
  21. Ronald Nguyen, MDSanta Ana, CA 927041720436736
  22. Rudolph Nguyen, MDLos Angeles, CA 900271629211909
  23. Ryan NguyenNewport Beach, CA 926631134756596
  24. Teresa Nguyen, MDStanford, CA 943051760004675
  25. Thiendang Nguyen, M.D.Los Angeles, CA 900331003056995
  26. Thomas Nguyen, M.D.Los Alamitos, CA 907201356322861
  27. Thomas NguyenSacramento, CA 958171417416454
  28. Thong Nguyen, M.D.San Diego, CA 921191568785913
  29. Thu NguyenSan Diego, CA 921231689037632
  30. Tri Nguyen, M.D.Downey, CA 902411982709606
  31. Trung Nguyen, M.D.Orange, CA 928681174608046
  32. Trung Nguyen, M.D.Menlo Park, CA 940251316018765
  33. Tu Nguyen, MDFountain Valley, CA 927081114931961
  34. Vien NguyenTorrance, CA 905051619471620
  35. Viet Scott Nguyen, DOOrange, CA 928681437737186
  36. Vu Nguyen, MDBaldwin Park, CA 917061740407220
  37. Vu Nguyen, M.D.Loma Linda, CA 923541013220656
  38. Yen Nguyen, M.D.Valencia, CA 913551942276803
  39. Christine Nguyen-Buckley, M.D.Los Angeles, CA 900951194091017
  40. Hanh Nguyen-Clark, MDLynwood, CA 902621649222308
  41. Calvin Nguyen-Ho, MDLos Alamitos, CA 907201174100176
  42. Jennifer Nguyen-Lee, M.D.Los Angeles, CA 900951467693044
  43. Gian Nhan, M.D.Los Angeles, CA 900331982770657
  44. Mark Niblack, M.D.San Diego, CA 921031619292133
  45. Theodora Nicholau, MDSan Francisco, CA 941431619932142
  46. Ethan Nicholls, M.D.Fremont, CA 945381801805106
  47. Stephen Nichols, MDRedding, CA 960011346217510
  48. Stuart Nicholson, MBBSSan Francisco, CA 941431538702352
  49. Lavonne Nickel, M.D.Yuba City, CA 959911134184021
  50. Peter Nickel, M.D.Santa Barbara, CA 931051407999642

Source: CMS NPPES, primary taxonomy 207L00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 18 of 51 per resident

  1. Montana20
  2. Arizona20
  3. Utah20
  4. California19
  5. Pennsylvania19
  6. Missouri19
  7. 50 states and D.C.18

Source: CMS NPPES, primary taxonomy 207L00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

71.3% of these records appear in a Medicare file, against 73.7% 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. California71.3%
  2. United States73.7%

Anesthesiology Physician records in California, measured

  • In a Medicare file5,396 of 7,571 · 71.3% here, 73.7% nationally
  • In the CMS Doctors and Clinicians file4,872 · 64.4% here, 67.2% nationally
  • Not updated in five years or more4,767 · 63.0% here, 57.8% nationally
  • Median graduation year2006 · the 4,868 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207L00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

7,571 NPPES records list anesthesiology physician (207L00000X) as their primary taxonomy with a practice address in California: 19 per 100,000 residents against 18 nationally (50 states and D.C.). Los Angeles has 762 of them (10%).

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 York5,062
  2. Texas4,635
  3. Florida3,375
  4. Illinois2,575

States with a similar rate per 100,000

  1. Utah19.6
  2. Pennsylvania19.1
  3. Arizona19.8
  4. Montana20.0

The largest states

  1. New York5,062
  2. Texas4,635
  3. Florida3,375
  4. Illinois2,575
  5. Pennsylvania2,481

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.