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Mrs. Mary Elizabeth Killeen-Mcdermott, M.A., CCC, SLP

Specialist in Islip, NY · enumerated 2009.

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

National Provider Identifier

1760622542

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Registry record

Entity type Individual (Type 1)
Name Mrs. Mary Elizabeth Killeen-Mcdermott
Credential M.A., CCC, SLP
Sex Female
Practice address 252 Islip Ave, Islip, NY, 11751
Phone (631) 581-6800
Fax (631) 581-6814
Enumeration date Mar 6, 2009
Last updated in NPPES Mar 6, 2009

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 011059-1 (NY) Primary
SLP · Speech-Language Pathologist: A licensed clinician treating speech, language, and swallowing disorders. About the SLP credential

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

What specialty is Mary Killeen-Mcdermott?
Mary Killeen-Mcdermott 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.
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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-03-06.