NPI Portal NPI Lookup & Verification

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

Mrs. Efthalia Dennise Piacquadio, MSED

Specialist in Merrick, NY · enumerated 2012 · practices at Efthalia Piacquadio Licensed Behavior Analyst PC.

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

National Provider Identifier

1013279041

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Registry record

Entity type Individual (Type 1)
Name Mrs. Efthalia Dennise Piacquadio
Credential MSED
Sex Female
Practice address Merrick, NY, 11566
Phone (516) 489-2689
Fax (516) 489-2689
Enumeration date Jun 14, 2012
Last updated in NPPES Jun 14, 2012

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

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 669832 (NY) Primary
174400000X Specialist Other Service Providers · License 417451101 (NY) Secondary

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

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Efthalia Piacquadio?
Efthalia Piacquadio is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-14.