Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Charles G St John Dmd PC

Dentist in Dalton, MA · enumerated 2008 · authorized official Charles St John, President.

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

National Provider Identifier

1265601512

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Registry record

Entity type Organization (Type 2)

Legal business name Charles G St John Dmd PC

Practice address 251 Main St, Dalton, MA, 01226

Phone (413) 684-1240

Fax (413) 684-8925

Enumeration date Feb 20, 2008

Last updated in NPPES Feb 20, 2008

Taxonomy & classification

122300000X Dentist Dental Providers · License 13458 (MA) Primary

Authorized official

Name Charles St John

Title President

Phone (413) 684-1240

Other identifiers

Identifier	Type	State	Issuer
X10161	Other	MA	BC/BS

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

Where is Charles G St John Dmd PC located?

The practice location on file with NPPES is in Dalton, MA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-02-20. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Charles St John General Practice Dentistry · Dalton, MA NPI 1205936978

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-20.