NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. John Samuel Irwin IV, D.C.

Chiropractor in Clanton, AL · enumerated 2006.

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

National Provider Identifier

1598856072

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Registry record

Entity type Individual (Type 1)
Name Dr. John Samuel Irwin IV
Credential D.C.
Sex Male
Practice address Clanton, AL, 35045
Phone (205) 755-4430
Fax (205) 755-4472
Enumeration date Sep 27, 2006
Last updated in NPPES Jul 20, 2012

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 1994 (AL) 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
51553204 Other AL BCBS OF AL PROVIDER ID

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.

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Frequently asked questions

What is the NPI number for John Irwin?
The National Provider Identifier (NPI) for John Irwin is 1598856072, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Irwin practice?
The practice location on file with NPPES is in Clanton, AL. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-07-20.