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

Mrs. Maureen Barrett Duffy

Clinical Social Worker in Rocky Hill, CT · enumerated 2014.

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

National Provider Identifier

1235558396

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mrs. Maureen Barrett Duffy

Sex Female

Practice address Rocky Hill, CT, 06067

Phone (860) 563-5607

Enumeration date Apr 15, 2014

Last updated in NPPES Apr 15, 2014

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 007999 (CT) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Maureen Duffy?

The National Provider Identifier (NPI) for Maureen Duffy is 1235558396, a Type 1 (individual) record in the CMS NPPES registry.

Where does Maureen Duffy practice?

The practice location on file with NPPES is in Rocky Hill, CT. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-04-15.