Mary Ann Defalco
NP | Nurse Practitioner
540 Union Blvd, West Islip
New York, 11795
631-669-2555
Mary Ann Defalco is a West Islip, New York based nurse practitioner. Active license number of Mary Ann Defalco is F3042641 in New York. Her current practice location is 540 Union Blvd, West Islip. Patients can reach her at 631-669-2555. Mary Ann Defalco is NP and her NPI number (Unique professional ID assigned by NPPES) is 1144208570.
Mary Ann Defalco has completed additional training beyond basic nursing education and provides primary health care services in accordance with state nurse practice laws or statutes. NPs are trained to assess patient needs, order and interpret diagnostic and laboratory tests, diagnose disease, formulate and prescribe medications and treatment plans.
Complete Profile:
Mary Ann Defalco speciality, credentials, practice address, contact phone number and fax are as below.
Patients can call on the below given phone number for appointment.
| Name: | Mary Ann Defalco |
| Specialization: | Nurse Practitioner (NP) |
| Gender: | Female |
| Credentials: | NP |
| Practice Address: | 540 Union Blvd, West Islip,
New York, 11795 |
| Phone: | 631-669-2555 |
Professional Identification Codes:
NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS).
NPI details are as mentioned below.
| NPI Number: | 1144208570 |
| NPI Enumeration Date: | 05 Jan, 2006 |
| NPI Last Update On: | 08 Jul, 2007 |
Medical Licenses:
NPs can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Mary Ann Defalco are as mentioned below.
| License Number | Specialization | State | Status | |
| F3042641 | | New York | Primary | |
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
| Address: | Mary Ann Defalco
540 Union Blvd,
West Islip, New York |
| Zip: | 11795 |
| Phone Number: | 631-669-2555 |
| Fax Number: | 631-669-5787 |
Patients can reach Mary Ann Defalco at
540 Union Blvd, West Islip, New York or can
call to book an appointment on 631-669-2555.
Comments/ Reviews:
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Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 08 December, 2025.