NPI Portal NPI Lookup & Verification

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

Joann Donnaruma Guay

Counselor in Madison, CT · enumerated 2023 · practices at Joann D Guay, LLC.

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

National Provider Identifier

1346924453

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Registry record

Entity type Individual (Type 1)
Name Joann Donnaruma Guay
Sex Female
Practice address Madison, CT, 06443
Phone (203) 214-6935
Enumeration date Jun 12, 2023
Last updated in NPPES Jun 12, 2023

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

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers Primary

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

Where does Joann Guay practice?
The practice location on file with NPPES is in Madison, CT. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Joann Guay?
The National Provider Identifier (NPI) for Joann Guay is 1346924453, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-12.