Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Thyde Dumont-Mathieu, MD

Developmental - Behavioral Pediatrics Physician in Hartford, CT · enumerated 2005.

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

National Provider Identifier

1376541383

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Registry record

Entity type Individual (Type 1)

Name Thyde Dumont-Mathieu

Credential MD

Sex Female

Practice address 282 Washington St, Hartford, CT, 06106

Phone (860) 545-9000

Enumeration date Jul 13, 2005

Last updated in NPPES Jan 13, 2026

Taxonomy & licenses

2080P0006X Developmental - Behavioral Pediatrics Physician Allopathic & Osteopathic Physicians · License 039571 (CT) Primary

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

Other identifiers

Identifier	Type	State	Issuer
001395715	Medicaid	CT	-

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

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.

What specialty is Thyde Dumont-Mathieu?

Thyde Dumont-Mathieu is registered in NPPES with the primary taxonomy of Developmental - Behavioral Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-13.