Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Charles C Guck, DMD

Dentist in Southbury, CT · enumerated 2008.

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

National Provider Identifier

1366603136

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Registry record

Entity type Individual (Type 1)

Name Dr. Charles C Guck

Credential DMD

Sex Male

Practice address 201 Main Street North, Southbury, CT, 06488

Phone (203) 264-8995

Fax (203) 267-6477

Enumeration date Jun 24, 2008

Last updated in NPPES Jun 24, 2008

Taxonomy & licenses

122300000X Dentist Dental Providers · License 007296 (CT) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Charles Guck's NPI record?

Cross-check NPI 1366603136 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1366603136 active?

Yes, as of the latest NPPES snapshot, NPI 1366603136 is active (record last updated 2008-06-24).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-24.