Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas Gavin Porth, DMD

Dentist in Groton, CT · enumerated 2021.

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

National Provider Identifier

1922773209

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Gavin Porth

Credential DMD

Sex Male

Practice address 1 Wahoo Ave, Groton, CT, 06349

Phone (267) 207-7107

Enumeration date Aug 10, 2021

Last updated in NPPES Aug 10, 2021

Taxonomy & licenses

122300000X Dentist Dental Providers · License DS043337 (PA) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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.

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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 Thomas Porth?

Thomas Porth is registered in NPPES with the primary taxonomy of Dentist. 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 2021-08-10.