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

Miss Liana Efstratiadis, CSW

Clinical Social Worker in New York, NY · enumerated 2006.

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

National Provider Identifier

1881631141

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Registry record

Entity type Individual (Type 1)

Name Miss Liana Efstratiadis

Credential CSW

Sex Female

Practice address New York, NY, 10017

Phone (718) 207-0006

Enumeration date Jun 2, 2006

Last updated in NPPES Aug 11, 2016

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 062091-1 (NY) Primary

Other identifiers

Identifier	Type	State	Issuer
062091-1	Other	NY	STATE LICENSE

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

Where does Liana Efstratiadis practice?

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

What is the NPI number for Liana Efstratiadis?

The National Provider Identifier (NPI) for Liana Efstratiadis is 1881631141, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-08-11.