NPI Portal NPI Lookup & Verification

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

Dr. Thomas Gerard Guglielmo, D.P.M.

Podiatrist in New Milford, CT · enumerated 2006.

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

National Provider Identifier

1639103955

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Registry record

Entity type Individual (Type 1)
Name Dr. Thomas Gerard Guglielmo
Credential D.P.M.
Sex Male
Practice address New Milford, CT, 06776
Fax (860) 354-0473
Enumeration date Jul 11, 2006
Last updated in NPPES Dec 3, 2007

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

Taxonomy & licenses

213E00000X Podiatrist Podiatric Medicine & Surgery Service Providers · License 00676 (CT) Primary
DPM · Doctor of Podiatric Medicine: A physician specializing in medical and surgical care of the foot and ankle. About the DPM credential

Other identifiers

Identifier Type State Issuer
5925646 Other CT AETNA
OV8143 Other CT HEALTHNET
030000676CT05 Other CT ISSUER
1006720 Other CT US HEALTHCARE
P2181784 Other CT OXFORD
750988 Other CT CONNECTICARE
4926790-012 Other CT CIGNA
PC1351 Other CT EMPIRE

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 1639103955 active?
Yes, as of the latest NPPES snapshot, NPI 1639103955 is active (record last updated 2007-12-03).
How do I verify Thomas Guglielmo's NPI record?
Cross-check NPI 1639103955 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-03.