NPPES file of Aug 9, 2026

William John Cogan, D.C.

Chiropractor · Manhattan Beach, CA

William John Cogan, D.C. is a chiropractor with a practice address in Manhattan Beach, California, and NPI 1003251182, issued on May 2, 2013. Check the license (California 23228, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1003251182
Name
William John Cogan
Credential
D.C.
Primary taxonomy
Chiropractor 111N00000X
License numbers
23228 CA
C000021 GU
Self-reported in NPPES; status is on the state search
Practice location
204 Kelp St, Manhattan Beach, CA 90266
Phone
(310) 498-1230
Enumerated
May 2, 2013
Record last updated
May 2, 2013 (not updated in 13 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify William John Cogan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 23228
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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28 chiropractor records list a practice address in Manhattan Beach

They are 28 of the 675 NPPES records with a practice address in Manhattan Beach, and 11,498 chiropractor records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other chiropractor records in California

  1. Karl Aamot, D.C.Sunnyvale, CA1629296983
  2. Beth Aarhus, D.C.San Jose, CA1508832221
  3. Michael Aaron, D.C.Belmont, CA1679630735
  4. Thao AaronCorona, CA1821553926
  5. Marianne Abate-Beavers, DCRocklin, CA1124139431
  6. Dilojan Abayaratna, D.C.Los Angeles, CA1659312957
  7. Jordan Abbass, DCLong Beach, CA1275106528
  8. David Abblett, DCNapa, CA1275529398
  9. Bridget Abbott, DCDanville, CA1790508547
  10. Nicholas Abboud, DCMoreno Valley, CA1851134365

Common questions

What is William John Cogan, D.C.'s NPI number?

William John Cogan, D.C.'s National Provider Identifier (NPI) is 1003251182, issued on May 2, 2013. An NPI identifies a provider in billing; it is not a license.

Where is William John Cogan, D.C. located?

The NPPES record lists a practice address at 204 Kelp St, Manhattan Beach, CA, 90266. Phone: (310) 498-1230. Providers update this record themselves, so call before visiting.

How can I verify William John Cogan, D.C.'s license?

NPPES lists California license number 23228, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it 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.