Individual provider · Type 1 NPI

Mary Ann Defalco, NP

Nurse Practitioner · West Islip, NY

NPI number 1144208570 Active

Practice location

540 Union Blvd
West Islip, NY 11795

Specialties and licenses

TaxonomyCodeLicense
Nurse Practitioner Primary 363L00000XF3042641 (NY)

Nurse Practitioner: (1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance wit…

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About NPI 1144208570

Mary Ann Defalco, NP's National Provider Identifier is 1144208570, issued on Jan 5, 2006. The primary taxonomy on file is Nurse Practitioner (363L00000X), and the practice location is in West Islip, NY. The record was last updated on Jul 13, 2026.