Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Caldwell Harrison, M.D.

Anatomic Pathology & Clinical Pathology Physician in Huntsville, AL · enumerated 2005 · practices at Pathology Associates, P.C..

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

National Provider Identifier

1942205414

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Registry record

Entity type Individual (Type 1)

Name John Caldwell Harrison

Credential M.D.

Sex Male

Practice address 2904 Westcorp Blvd Sw, Suite 107/108, Huntsville, AL, 35805

Phone (256) 533-1480

Enumeration date Jun 20, 2005

Last updated in NPPES Jul 18, 2008

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 15673 (AL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
000083396	Medicaid	AL	-
051083396	Other	AL	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 the NPI number for John Harrison?

The National Provider Identifier (NPI) for John Harrison is 1942205414, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Harrison practice?

The practice location on file with NPPES is in Huntsville, AL. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-18.