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

Dr. Thomas Michael Halwax, D.C.

Chiropractor in Oak Forest, IL · enumerated 2005.

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

National Provider Identifier

1215937123

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Michael Halwax

Credential D.C.

Sex Male

Practice address Oak Forest, IL, 60452

Phone (708) 687-2724

Enumeration date Jul 21, 2005

Last updated in NPPES Aug 4, 2012

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

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 0380005233 (IL) Primary

111N00000X Chiropractor Chiropractic Providers · License 4745 (FL) Secondary

111N00000X Chiropractor Chiropractic Providers · License 08000995 (IN) Secondary

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

Where does Thomas Halwax practice?

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

What is the NPI number for Thomas Halwax?

The National Provider Identifier (NPI) for Thomas Halwax is 1215937123, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-08-04.