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 152 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. Stanley Oh, DCRiverside, CA 925071356325823
  2. Thomas Ohara, DCSan Jose, CA 951281811984008
  3. Deann Ohler, DCPalo Alto, CA 943061821160185
  4. Darcy Oikawa, D.C.Corte Madera, CA 949251841305588
  5. Darrin Oilar, D.C.Cottonwood, CA 960221023190048
  6. Robert Oishi, D.C.Gardena, CA 902471215078316
  7. Sonny Okada, D.C.Oxnard, CA 930361073687828
  8. Michihiro Okazaki, DCSan Diego, CA 921231588740807
  9. Omid Okhowat, D.C.Los Angeles, CA 900481255516829
  10. Mikel Okouchi, D.C.Irvine, CA 926041831109768
  11. Cinder Okuda, D.C.Chowchilla, CA 936101093743171
  12. Yumi Okuwaki, D.C.San Francisco, CA 941041427181510
  13. Katherine OkyleBeverly Hills, CA 902121578226296
  14. Alyson Olavarria, DCHuntington Beach, CA 926491275454456
  15. Gregory Olberg, DCHayward, CA 945411043597156
  16. Valerie Oldenburg, DCMurrieta, CA 925621659838274
  17. Kevin Oleary, DCLos Angeles, CA 900451538330246
  18. Ronald Oler, D.C.Groveland, CA 953211447288527
  19. Edward Olff, DCFresno, CA 937101447246343
  20. Michael Olff, DCDiscovery Bay, CA 945141679564942
  21. Kirby Edmund Olidan, DCSan Francisco, CA 941141518731165
  22. Mark Olinger, D.C.Costa Mesa, CA 926261386934552
  23. Elba Olivares, D.C.West Covina, CA 917911508184920
  24. Raymond Olivas, D.C.Stockton, CA 952071578504239
  25. Andrea Oliveau, D.C.Lancaster, CA 935341649339904
  26. Nathan Oliveira, DCSacramento, CA 958191023697984
  27. Rodrigo Oliveira, DCSan Francisco, CA 941141013174911
  28. Charles OliverElk Grove, CA 956241205789427
  29. Clifford Oliver, DC RNSan Diego, CA 921171720158256
  30. Dan Oliver, D.C.Sacramento, CA 958251720332273
  31. Kenneth Oliver, D.C.San Mateo, CA 944021033491386
  32. Linda Oliver, D.C., L.AC.San Diego, CA 921261013071869
  33. Mark OliverLos Angeles, CA 900251033649793
  34. Thomas Oliver, D.C.Stockton, CA 952041013043645
  35. Tara Olivieri, D.C.Newport Beach, CA 926601295869626
  36. David Olsen, D.C.San Mateo, CA 944011447405501
  37. Greg Olsen, D.C.Lake Forest, CA 926301750300570
  38. Keith Olsen, D.C.Madera, CA 936371093856775
  39. Martin Olsen, D.C.La Jolla, CA 920371730247990
  40. Marina Olshansky, D.C.Chatsworth, CA 913111285628685
  41. Cindy Olson, D.C.Huntington Beach, CA 926481184794406
  42. David Olson, D.C.Cardiff, CA 920071942330873
  43. Debra Olson, DCLancaster, CA 935341710194980
  44. Heidi Olson, D.C.Concord, CA 945201427100817
  45. Katie Olson, B.S., D.C.San Francisco, CA 941111184016487
  46. Mary Olson, D.C.Yorba Linda, CA 928861093097198
  47. Richard Olson, DCHuntington Beach, CA 926481912092503
  48. Robert Olson, D.C.,Vista, CA 920811922045046
  49. Thomas Olson, D.C.Sacramento, CA 958411033134440
  50. Karl Olsson-Deem, DCSan Carlos, CA 940701801673835

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.