Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Mark Portnoy Barbagiovanni, LMSW

Clinical Social Worker in Peekskill, NY · enumerated 2015.

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

National Provider Identifier

1598134371

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Registry record

Entity type Individual (Type 1)

Name Mr. Mark Portnoy Barbagiovanni

Credential LMSW

Sex Male

Practice address 50 Dayton Ln Ste 205, Peekskill, NY, 10566

Phone (914) 736-3371

Fax (914) 736-3372

Enumeration date Sep 22, 2015

Last updated in NPPES Oct 18, 2018

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 099391 (NY) 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

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 Mark Barbagiovanni?

Mark Barbagiovanni is registered in NPPES with the primary taxonomy of Clinical Social Worker. 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 2018-10-18.