Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

St. Clair Chiropractic Clinic P.C.

Chiropractor in Saint Clair, MI · enumerated 2006 · authorized official Thomas Hanrahan, President.

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

National Provider Identifier

1508886904

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Registry record

Entity type Organization (Type 2)

Legal business name St. Clair Chiropractic Clinic P.C.

Practice address 301 Trumbull St, Saint Clair, MI, 48079

Phone (810) 329-9121

Fax (810) 329-3914

Enumeration date Jul 20, 2006

Last updated in NPPES Jun 27, 2014

Taxonomy & classification

111N00000X Chiropractor Chiropractic Providers · License 2301005229 (MI) Primary

Authorized official

Name Thomas Hanrahan

Title President

Phone (810) 329-9121

Other identifiers

Identifier	Type	State	Issuer
950G411230	Other	MI	BCBS

What is an NPI number?

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is St. Clair Chiropractic Clinic P.C.?

St. Clair Chiropractic Clinic P.C. is registered in NPPES as a Chiropractor (its primary provider taxonomy).

Providers at this address

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Thomas Hanrahan Chiropractor · Saint Clair, MI NPI 1871521534

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-06-27.