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

Dr. Brett William Clasquin, DC

Chiropractor in Smithton, IL · enumerated 2005.

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

National Provider Identifier

1316929235

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Registry record

Entity type Individual (Type 1)

Name Dr. Brett William Clasquin

Credential DC

Sex Male

Practice address Smithton, IL, 62285

Phone (618) 235-4120

Fax (618) 235-4120

Enumeration date Nov 16, 2005

Last updated in NPPES Aug 14, 2012

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

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 038 007776 (IL) Primary

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

Is NPI 1316929235 active?

Yes, as of the latest NPPES snapshot, NPI 1316929235 is active (record last updated 2012-08-14).

How do I verify Brett Clasquin's NPI record?

Cross-check NPI 1316929235 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-08-14.