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 99 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. Matthew Novak, MDLos Angeles, CA 900271255539649
  2. Richard Novak, M.D.Stanford, CA 943051821056904
  3. Matthew Nuckols, M.D.San Diego, CA 921231528209103
  4. Kevin Nugent, MDCarmichael, CA 956081376590919
  5. Melvin Nunn, MDCarmichael, CA 956081033166210
  6. Claudia Nuno Garcia, M.D.Westminster, CA 926831073572814
  7. David Nurkse, M.D.Oakland, CA 946091649659632
  8. Katherine Nurkse, MDOakland, CA 946111952798506
  9. Michael Nurok, M.D.West Hollywood, CA 900481861473779
  10. Michael Nussbaum, M.D.Poway, CA 920641932100856
  11. Onyemaechi Nwabueze, M.D.San Diego, CA 921231497118046
  12. Patricia Nwajuaku, M.D., MPHLos Angeles, CA 900951659690733
  13. Robert Nye, M.D.San Diego, CA 921231487661625
  14. Eve Nyrhinen, M.D.Palo Alto, CA 943041518226380
  15. Chima Nzerem, D.O.San Bernardino, CA 924041821386848
  16. Thaddeus O'Barr, M.D.Orange, CA 928681609168814
  17. Aidan O'Brien, MDWhittier, CA 906021417917691
  18. James O'CarrollPalo Alto, CA 943051275109704
  19. Chloe O'ConnellOakland, CA 946111275094179
  20. Richard O'Dell, M.D.Encino, CA 914361427147644
  21. Christian O'Donnell, MDStanford, CA 943051821558545
  22. Laura O'Donnell, M.D.San Diego, CA 921231457369555
  23. Robert O'Donnell, M.D.San Diego, CA 921231558386615
  24. Helen O'Keeffe, MDWalnut Creek, CA 945961811069560
  25. Karen Anne O'Laco, MDStanford, CA 943051386221448
  26. Richard O'Leary, MDSan Diego, CA 921031275585937
  27. Geoffery O'Neill, M.D.Marina Del Rey, CA 902921871750497
  28. Daryl Oakes, MDStanford, CA 943051366469058
  29. John Oakley, M.D.Pomona, CA 917671841233921
  30. Daniela Oatu, M.D.Rancho Mirage, CA 922701366547093
  31. Daniel Oberto, M.D.Santa Barbara, CA 931051760648505
  32. Leziga Obiyo, MDStanford, CA 943051851822852
  33. Dominik Ochocinski, DOPalo Alto, CA 943041730610627
  34. Matthew Ockander, DOTravis Afb, CA 945351043429129
  35. Thaddaeus Odermatt, M.D.San Francisco, CA 941431558503326
  36. Didi Odinkemelu, MDStanford, CA 943051114555646
  37. David Odonnell, MDWest Hollywood, CA 900481467449389
  38. Cheuw Oey, D.O.Anaheim, CA 928011609930866
  39. Drew Ogomori, MDLos Angeles, CA 900951447010921
  40. Adeyemi Ogunkoya, MDSanta Rosa, CA 954031922414622
  41. Gene Oh, MDGarden Grove, CA 928431235328683
  42. Samuel Oh, MDTracy, CA 953771881770279
  43. Sun Oh, MDLos Angeles, CA 900271578527651
  44. Sung-Min Oh, MDFresno, CA 937201396760518
  45. Meg Ohare, M.D.San Francisco, CA 941081619131935
  46. Eli Ohayon, MDSan Diego, CA 921201598832321
  47. Blake Ohm, DNP CRNALos Angeles, CA 900271619688868
  48. James Ohn, MDModesto, CA 953551629095260
  49. Oji Oji, M.D.Bakersfield, CA 933061750434783
  50. Jeanette Oka, M.D.Torrance, CA 905051013936194

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.