Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Fagan, D.C.

Chiropractor in Wailuku, HI · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1417976143

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Registry record

Entity type Individual (Type 1)

Name William Fagan

Credential D.C.

Sex Male

Practice address 2180 Main St, Wailuku, HI, 96793

Phone (808) 242-6464

Fax (808) 984-7442

Enumeration date Jul 19, 2006

Last updated in NPPES Sep 9, 2010

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License DC163 (HI) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier	Type	State	Issuer
54551901	Medicaid	HI	-
235226	Other	HI	HMSA - 65CP - HMSA QUEST
990176859	Other	HI	HMAA

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A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is William Fagan?

William Fagan is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-09-09.