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

Ms. Denise Cynthia Gnazzo, N.P.

Nurse Practitioner in Dartmouth, MA · enumerated 2006.

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

National Provider Identifier

1477635340

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Registry record

Entity type Individual (Type 1)

Name Ms. Denise Cynthia Gnazzo

Credential N.P.

Sex Female

Practice address Dartmouth, MA, 02747

Phone (508) 996-3991

Enumeration date Oct 20, 2006

Last updated in NPPES May 29, 2025

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

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 181612 (MA) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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 Denise Gnazzo's NPI record?

Cross-check NPI 1477635340 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1477635340 active?

Yes, as of the latest NPPES snapshot, NPI 1477635340 is active (record last updated 2025-05-29).

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Robert Conroy Sleep Medicine (Psychiatry & Neurology) Physician · Dartmouth, MA NPI 1528062858 Juan Cuebas Neurology Physician · Dartmouth, MA NPI 1679578256 Robert Audycki Corneal and Contact Management Optometrist · N Dartmouth, MA NPI 1689673428 Luiza Arbain Pharmacist · Dartmouth, MA NPI 1245232099 Justin Matrisciano Endocrinology, Diabetes & Metabolism Physician · Dartmouth, MA NPI 1922093210 Alvin Marcovici Neurological Surgery Physician · North Dartmouth, MA NPI 1376530337 Paul Vivino Interventional Cardiology Physician · North Dartmouth, MA NPI 1295717387 Sherry Audycki Optometrist · N Dartmouth, MA NPI 1679559108

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-29.