NPPES file of Aug 9, 2026

Optometrist in California

8,308 NPPES records list optometrist with a practice address in California, 21 per 100,000 residents, the 17th 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 102 of 167.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 152W00000X · 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, 371

  1. Los Angeles371
  2. San Diego342
  3. San Francisco295
  4. San Jose207
  5. Sacramento176

Optometrist records in California

  1. Serene Ngin, O.D.Oakland, CA 946061073583084
  2. Adrienne NgoFresno, CA 937201124984539
  3. Amy Ngo, ODTustin, CA 927821952886988
  4. Andrew Ngo, O.D.San Diego, CA 921611245670249
  5. Andrew Ngo, O.D.Rialto, CA 923761033542071
  6. Angela Ngo, ODSacramento, CA 958341801448345
  7. Angeline Ngo, ODLos Angeles, CA 900731487302402
  8. Ann Ngo, ODNorth Hollywood, CA 916061083085666
  9. Charlie Ngo, ODBerkeley, CA 947201417202474
  10. Chi Ngo, O.D.Pleasanton, CA 945881174659973
  11. Christine Ngo, O.D.Santa Clara, CA 950511891075990
  12. Christopher Ngo, O.D.San Jose, CA 951271013205228
  13. Danny Ngo, O.D.Redondo Beach, CA 902771386957124
  14. David Ngo, O.D.Sacramento, CA 958231588623268
  15. Elaine Ngo, O.D.Mountain View, CA 940411316469331
  16. Erica Ngo, O.D.San Mateo, CA 944031124575790
  17. Jamie Ngo, ODSan Jose, CA 951291639796998
  18. Jessica Ngo, ODSan Francisco, CA 941211861234106
  19. Jordene Ngo, ODGarden Grove, CA 928431821821208
  20. Katherine Ngo, ODMerced, CA 953481245025816
  21. Kathleen Ngo, O.D.Yuba City, CA 959931962457978
  22. Linh Ngo, O.D.Bakersfield, CA 933011366496044
  23. Linh Ngo, ODSacramento, CA 958111417444282
  24. Long Ngo, ODHuntington Beach, CA 926461568920296
  25. Melissa Ngo, ODLafayette, CA 945491184022691
  26. Nancy Ngo, O.D.San Jose, CA 951241811044662
  27. Noy NgoVacaville, CA 956871477949311
  28. Quoc Ngo, O.D.Milpitas, CA 950351073538492
  29. Ryan Ngo, ODSan Francisco, CA 941171073035028
  30. Sieu Ngo, O.D.Travis Afb, CA 945351982642799
  31. Tanya NgoYorba Linda, CA 928861073278826
  32. Tracy Ngo, O.D.Menifee, CA 925841558525980
  33. Tri Ngo, O.D.Temple City, CA 917801902028962
  34. Tuongvy Ngo, ODLake Elsinore, CA 925301700918091
  35. Uyen Ngo, ODSan Jose, CA 951321912032392
  36. Jennifer Ngoyen, ODInglewood, CA 903031740888627
  37. Sonia Ngu, O.D.Los Angeles, CA 900451982764866
  38. Vicki Nguon, ODEastvale, CA 917521780257188
  39. Jeanny NguySan Jose, CA 951111083028310
  40. Ai (theresa) Nguyen, O.D.San Diego, CA 921151508857533
  41. Alain Nguyen, O.D.Bakersfield, CA 933061962458869
  42. Albert Nguyen, O.D.Sacramento, CA 958141992138044
  43. Aline Nguyen, ODSan Jose, CA 951291912687898
  44. Alyssa Nguyen, O.D.Bakersfield, CA 933111992839161
  45. Amy Nguyen, ODOrange, CA 928681538651948
  46. Amy Nguyen, ODSacramento, CA 958291124470281
  47. Andrea Nguyen, O.D.Foothill Ranch, CA 926101275651408
  48. Andrian Nguyen, O.D.Westminster, CA 926831497808208
  49. Angela Nguyen, O.D, F.A.A.OSacramento, CA 958231609256742
  50. Angie Nguyen, ODRancho Cucamonga, CA 917301134949340

Source: CMS NPPES, primary taxonomy 152W00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 17 of 51 per resident

  1. Montana22
  2. Illinois21
  3. Massachusetts21
  4. California21
  5. Iowa21
  6. Washington21
  7. 50 states and D.C.19

Source: CMS NPPES, primary taxonomy 152W00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

66.8% of these records appear in a Medicare file, against 71.9% 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. California66.8%
  2. United States71.9%

Optometrist records in California, measured

  • In a Medicare file5,553 of 8,308 · 66.8% here, 71.9% nationally
  • In the CMS Doctors and Clinicians file3,575 · 43.0% here, 57.6% nationally
  • Not updated in five years or more5,560 · 66.9% here, 65.3% nationally
  • Median graduation year2008 · the 3,573 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 152W00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

8,308 NPPES records list optometrist (152W00000X) as their primary taxonomy with a practice address in California: 21 per 100,000 residents against 19 nationally (50 states and D.C.). Los Angeles has 371 of them (4%).

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. Texas5,006
  2. Florida3,594
  3. New York3,535
  4. Illinois2,697

States with a similar rate per 100,000

  1. Massachusetts21.4
  2. Iowa21.1
  3. Montana21.6
  4. Washington21.0

The largest states

  1. Texas5,006
  2. Florida3,594
  3. New York3,535
  4. Illinois2,697
  5. Pennsylvania2,640

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.