NPPES file of Aug 9, 2026

Chiropractor in California

11,498 NPPES records list chiropractor with a practice address in California, 30 per 100,000 residents, the 22nd highest rate of 51. San Diego and Los Angeles have the most; each record links to the provider's NPI and the California license search. Page 150 of 230.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 111N00000X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

San Diego has the most, 531

  1. San Diego531
  2. Los Angeles525
  3. San Jose371
  4. San Francisco326
  5. Sacramento160

Chiropractor records in California

  1. Gary Nolan, DCSan Jose, CA 951181902934193
  2. Jennifer Nolan, D.C.Oakland, CA 946191457805434
  3. Robert Nolan, D.C.Orange, CA 928671972632412
  4. James NolenRoseville, CA 956611841217346
  5. Salvatore Nolfo, DCStockton, CA 952071619022993
  6. Patrick Noll, DCVista, CA 920831982626263
  7. Votha Nong, D.C.San Jose, CA 951211124469051
  8. David Noonan, D.C.Redondo Beach, CA 902771962606129
  9. Mallory Noonan, DCArroyo Grande, CA 934201417715160
  10. Arash Noor, D.C.Los Angeles, CA 900251912339193
  11. Tina Noorishad, DCAlameda, CA 945011407351455
  12. Maryam Noorivaziri, D.C.Walnut Creek, CA 945981609017813
  13. Morvarid Noorivaziri, D.C.Walnut Creek, CA 945981871267724
  14. Lawrence Nordhoff, D.C.Pleasanton, CA 945661073773909
  15. Vanessa Nordin, D.C.Los Gatos, CA 950321841609773
  16. Robert Norett, D.C.Los Angeles, CA 900261336315662
  17. David Norgaard, D.C.Fillmore, CA 930151386854222
  18. Nina Nori, D.C.Thousand Oaks, CA 913611013553544
  19. Michelle NoriegaMission Viejo, CA 926911770947111
  20. Nikolaus Noriega, DCEl Monte, CA 917311689391823
  21. Wendy Norman, D.C.Laguna Niguel, CA 926771497944227
  22. Michael Norris, DCLancaster, CA 935341780755264
  23. Christopher Norton, D.C.San Diego, CA 921031891197901
  24. Matthew Norton, D.C.Fresno, CA 937101013942838
  25. Richard Norton, D.C.Richmond, CA 948041023280195
  26. Orit Nostati, D.C.Paramount, CA 907231164690038
  27. Kamron Nourgostar, D.C.Santa Ana, CA 927061902271760
  28. Farnaz Nourmand, D.C.Los Angeles, CA 900351598097271
  29. Carisa Novak, DCOxnard, CA 930361295889780
  30. Daran Novak, D.C.La Habra, CA 906311861926073
  31. Stephen Novak, DCModesto, CA 953561467560862
  32. Sese Novas, DCLong Beach, CA 908151588695837
  33. Edward Nowak, DCSalinas, CA 939051780678557
  34. Jeffrey Nowicki, DCAnaheim, CA 928061063423739
  35. Jonathan Nowland, D.C.Roseville, CA 956611437573458
  36. Kayvon Nownejad, DCLos Angeles, CA 900031972191146
  37. Bijan Nowzarinezhad, D.C.Burbank, CA 915021902263627
  38. Jason Nummi, DCSan Diego, CA 921091295062206
  39. Alan Nunez, D.C.Glendale, CA 912061609861236
  40. Francel Nunnink, DCAntioch, CA 945091760679278
  41. Guadalupe NunoCastro Valley, CA 945521700261963
  42. Godfrey Nunoo, D.C.Oakland, CA 946091336460484
  43. Manasseh Nwaigwe, D.C.Arcadia, CA 910061366823676
  44. Rebecca Nystrom, D.C.San Rafael, CA 949011992800213
  45. Dennis O'Brien, D.C., Q.M.E.Chula Vista, CA 919101588780241
  46. Dennis O'Brien, D.C.Fair Oaks, CA 956281801826573
  47. Karen O'Brien, D.C.Nevada City, CA 959591548558372
  48. Loretta O'Brien, D.C.Pacifica, CA 940441801828488
  49. Mark O'Brien, DCEl Dorado Hills, CA 957621770180895
  50. Milton O'Brien, D.C.San Francisco, CA 941101942377551

Source: CMS NPPES, primary taxonomy 111N00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 22 of 51 per resident

  1. Michigan30
  2. Pennsylvania30
  3. Maine30
  4. California30
  5. Georgia29
  6. Wyoming29
  7. 50 states and D.C.29

Source: CMS NPPES, primary taxonomy 111N00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

7.0% of these records appear in a Medicare file, against 16.9% 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. California7.0%
  2. United States16.9%

Chiropractor records in California, measured

  • In a Medicare file809 of 11,498 · 7.0% here, 16.9% nationally
  • In the CMS Doctors and Clinicians file2,911 · 25.3% here, 39.8% nationally
  • Not updated in five years or more8,830 · 76.8% here, 72.3% nationally
  • Median graduation year1999 · the 2,907 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 111N00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

11,498 NPPES records list chiropractor (111N00000X) as their primary taxonomy with a practice address in California: 30 per 100,000 residents against 29 nationally (50 states and D.C.). San Diego has 531 of them (5%).

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. Texas6,979
  2. Florida6,967
  3. New York4,573
  4. Illinois4,524

States with a similar rate per 100,000

  1. Georgia29.5
  2. Wyoming29.3
  3. Maine29.9
  4. Pennsylvania30.4

The largest states

  1. Texas6,979
  2. Florida6,967
  3. New York4,573
  4. Illinois4,524
  5. Pennsylvania3,934

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.