Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Yvonne O'Brien, LICSW

Clinical Social Worker in New Haven, CT · enumerated 2015.

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

National Provider Identifier

1487043063

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Registry record

Entity type Individual (Type 1)

Name Yvonne O'Brien

Credential LICSW

Sex Female

Practice address 157 Church St Fl 19, New Haven, CT, 06510

Phone (347) 981-6775

Enumeration date Jan 20, 2015

Last updated in NPPES Apr 14, 2026

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 10685 (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.

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Frequently asked questions

Where does Yvonne O'Brien practice?

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

What is the NPI number for Yvonne O'Brien?

The National Provider Identifier (NPI) for Yvonne O'Brien is 1487043063, 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 2026-04-14.