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

Dr. Thomas Lawrence Halton, DOCTOR OF SCIENCE

Nutritionist in Boston, MA · enumerated 2007.

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

National Provider Identifier

1730361932

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Lawrence Halton

Credential DOCTOR OF SCIENCE

Sex Male

Practice address Boston, MA, 02215

Phone (617) 536-8896

Enumeration date Nov 29, 2007

Last updated in NPPES Nov 29, 2007

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

Taxonomy & licenses

133N00000X Nutritionist Dietary & Nutritional Service Providers · License 2548 (MA) Primary

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.

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Frequently asked questions

What specialty is Thomas Halton?

Thomas Halton is registered in NPPES with the primary taxonomy of Nutritionist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-29.