NPPES file of Aug 9, 2026

Ophthalmology Physician in California

2,899 NPPES records list ophthalmology physician with a practice address in California, 7.4 per 100,000 residents, the 14th highest rate of 51. Los Angeles and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 39 of 58.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207W00000X · 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, 308

  1. Los Angeles308
  2. San Francisco167
  3. San Diego147
  4. Sacramento95
  5. San Jose59

Ophthalmology Physician records in California

  1. Sam Nikou, MDGlendale, CA 912041861416802
  2. Janis Nobe, M.D.Long Beach, CA 908061083674436
  3. Matthew NobeFullerton, CA 928351821313461
  4. Henry Noguchi, MDTorrance, CA 905031770571382
  5. Nelson Noguchi, M.D.Anaheim, CA 928011770685752
  6. Stephanie NohSacramento, CA 958231780212274
  7. Sahar Noorani, MDSan Francisco, CA 941581437787595
  8. Nina Nordgren, MDStockton, CA 952101902125537
  9. Brent Norman, MDNewport Beach, CA 926631164493284
  10. John Norris, M.D.Santa Rosa, CA 954011194024935
  11. Leilani Norton, M.D.Placerville, CA 956671942215629
  12. Kouros Nourimahdavi, MD, MSLos Angeles, CA 900951326225137
  13. Roger Novack, MDLos Angeles, CA 900171104828706
  14. Lee Novick, M.D.Fountain Valley, CA 927081366500456
  15. Eric Nudleman, M.D., PH.D.San Diego, CA 921031154582575
  16. Alexander Nugent, MDSan Diego, CA 921201306016696
  17. Brenda NuyenSanta Monica, CA 904041023351582
  18. Michael Nyberg, M.D.Santee, CA 920711700897410
  19. Omondi Nyongo, MDPortola Valley, CA 940281629099015
  20. Stephen O'ConnellCamp Pendleton, CA 920551396835302
  21. Henry O'Halloran, M.D.San Diego, CA 921231235287947
  22. Mary O'Hara, M.D.Sacramento, CA 958171891779559
  23. Thomas O'Neil, MDTracy, CA 953761831162999
  24. Zackery Oakey, MDIrvine, CA 926181720320872
  25. Renata Ochabski, MDLa Jolla, CA 920371386734770
  26. Glenn Oelker, MDSan Luis Obispo, CA 934011871501783
  27. Angela Oh, MDFountain Valley, CA 927081881221968
  28. Sang-Rog Oh, M.D.La Jolla, CA 920931659588978
  29. Roger Ohanesian, M.D.Laguna Hills, CA 926531598729501
  30. Thomas Ohearn, M.D.Los Angeles, CA 900111912104720
  31. Theodore OkieLynwood, CA 902621629184098
  32. Joseph Oldenburg, M.D.San Luis Obispo, CA 934011881682193
  33. Jonathan Olenick, M.D.San Bernardino, CA 924041831490200
  34. Yuri Oleynikov, MD, PHDLos Angeles, CA 900481790707875
  35. Scott Olitsky, MDLaguna Niguel, CA 926771013956085
  36. Arthur Ollivierre, MDHayward, CA 945451649358490
  37. Pamela Ombres, MDLa Jolla, CA 920371194998906
  38. Erwin Omens, MDEscondido, CA 920251477519205
  39. Nika Omid, M.D.Irvine, CA 926041346425964
  40. Tania Onclinx, MDLos Angeles, CA 900951093098600
  41. Alex OnishiDaly City, CA 940151710351622
  42. Chi Mong Or, MDStanford, CA 943051639676000
  43. Donna Ornitz, MDSan Mateo, CA 944011073528790
  44. Steven Ortiz, MDLos Angeles, CA 900271538255724
  45. Firooz Oskooi, M.D.Newport Beach, CA 926601114912615
  46. Stephen Oster, M.D., PH.D.La Jolla, CA 920371215073689
  47. Erika Osterholzer, MDLoma Linda, CA 923541669739769
  48. Mark Osterloh, M.D.El Centro, CA 922431073750097
  49. Gregory Ostrow, M.D.San Diego, CA 921301669559522
  50. Oscar Otero Marquez, MDStanford, CA 943051043969116

Source: CMS NPPES, primary taxonomy 207W00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 14 of 51 per resident

  1. Oregon7.6
  2. Minnesota7.6
  3. Wisconsin7.5
  4. California7.4
  5. Illinois7.2
  6. New Hampshire7.1
  7. 50 states and D.C.6.7

Source: CMS NPPES, primary taxonomy 207W00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

78.5% of these records appear in a Medicare file, against 77.8% 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. California78.5%
  2. United States77.8%

Ophthalmology Physician records in California, measured

  • In a Medicare file2,277 of 2,899 · 78.5% here, 77.8% nationally
  • In the CMS Doctors and Clinicians file1,909 · 65.9% here, 65.5% nationally
  • Not updated in five years or more1,945 · 67.1% here, 63.6% nationally
  • Median graduation year2001 · the 1,907 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207W00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

2,899 NPPES records list ophthalmology physician (207W00000X) as their primary taxonomy with a practice address in California: 7.4 per 100,000 residents against 6.7 nationally (50 states and D.C.). Los Angeles has 308 of them (11%).

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 York1,822
  2. Florida1,581
  3. Texas1,514
  4. Pennsylvania1,088

States with a similar rate per 100,000

  1. Wisconsin7.5
  2. Minnesota7.6
  3. Oregon7.6
  4. Illinois7.2

The largest states

  1. New York1,822
  2. Florida1,581
  3. Texas1,514
  4. Pennsylvania1,088
  5. Illinois898

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.