NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Charter Oak Therapeutic Services LLC

Clinical Social Worker in Wolcott, CT · enumerated 2017 · authorized official Sharon Sanzari, Biller.

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

National Provider Identifier

1134658396

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Charter Oak Therapeutic Services LLC
Practice address 246 Wolcott Rd Ste 2, Wolcott, CT, 06716
Enumeration date Jun 9, 2017
Last updated in NPPES Jun 9, 2017

Taxonomy & classification

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 9523 (CT) Primary
106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 1634 (CT) Secondary

Authorized official

Name Sharon Sanzari
Title Biller

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

What is the NPI number for Charter Oak Therapeutic Services LLC?
The NPI for Charter Oak Therapeutic Services LLC is 1134658396, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Charter Oak Therapeutic Services LLC?
NPPES lists Sharon Sanzari (Biller) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-06-09.