Dr. William Alex Mcculloch, D.C.

Dr. William Alex Mcculloch is a Chiropractor provider (Chiropractor) practicing in Irwin, PA, registered in the NPPES registry with NPI 1821140195 since 2007. The credential DC stands for Doctor of Chiropractic.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1821140195
Entity type	Individual (Type 1)
Name	Dr. William Alex Mcculloch
Credential	D.C.
Sex	Male
Practice address	Irwin, PA, 15642
Phone	4128242600
Fax	4128242006
Enumeration date	2007-01-17
Last updated in NPPES	2007-07-08

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

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
111N00000X	Chiropractor	Primary	DC007696L	PA

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

Other identifiers

Identifier	Type	State	Issuer
P00205164	Other	PA	MEDICARE RAILROAD PRO #

Copy-ready billing details

Provider: William Mcculloch, D.C.
NPI: 1821140195
Taxonomy: 111N00000X (Chiropractor)
Address: Irwin, PA, 15642

Verify this record

Cross-check NPI 1821140195 against the authoritative CMS record: view Dr. William Alex Mcculloch on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Where does William Mcculloch practice?

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

What is the NPI number for William Mcculloch?

The National Provider Identifier (NPI) for William Mcculloch is 1821140195, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.