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Ms. Catherine J Sullivan, NP

Gerontology Nurse Practitioner in Holtsville, NY · enumerated 2008 · practices at Island Rehabilitation and Nursing Center Inc.

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

National Provider Identifier

1134304645

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Registry record

Entity type Individual (Type 1)
Name Ms. Catherine J Sullivan
Credential NP
Sex Female
Practice address 5537 Expressway Dr N, Holtsville, NY, 11742
Phone (631) 758-3336
Enumeration date Jan 3, 2008
Last updated in NPPES Jan 3, 2008

Taxonomy & licenses

363LG0600X Gerontology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F340126 (NY) Primary
NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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

Where does Catherine Sullivan practice?
The practice location on file with NPPES is in Holtsville, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Catherine Sullivan?
The National Provider Identifier (NPI) for Catherine Sullivan is 1134304645, 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 2008-01-03.