Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Rex Wier III, MD

Q: What is the NPI number for John Wier?

The National Provider Identifier (NPI) for John Wier is 1194829267, a Type 1 (individual) record in the CMS NPPES registry.

Specialist in Austin, TX · enumerated 2006.

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

National Provider Identifier

1194829267

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Registry record

Entity type Individual (Type 1)

Name John Rex Wier III

Credential MD

Sex Male

Practice address 3724 Jefferson St, Ste 111, Austin, TX, 78731

Phone (512) 452-0109

Fax (512) 452-2706

Enumeration date Sep 11, 2006

Last updated in NPPES Jul 16, 2007

Taxonomy & licenses

174400000X Specialist Other Service Providers Primary

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

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

Where does John Wier practice?

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

What is the NPI number for John Wier?

The National Provider Identifier (NPI) for John Wier is 1194829267, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-16.