Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mrs. Stephanie Dawn Teresa Brassil, AGNP

Individual provider Adult Health Nurse Practitioner · NPI 1508566845

Mrs. Stephanie Dawn Teresa Brassil, AGNP is a Nurse Practitioner in West Islip, New York. Qualified in 2022, 4 years ago. Practices with New York University, a 5,884-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
4
Licensed in
NY
In the registry since
2023
What do these letters mean?
AGNP — Adult-Gerontology Nurse Practitioner
A nurse practitioner focused on adults and older people.

See every abbreviation used in this directory →

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Practice location Address checks out

121 Cedar Point Dr
West Islip, NY 11795-5033
Phone: (631) 374-9588
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Health Nurse Practitioner (primary) Taxonomy 363LA2200X · Licence F310932-01 (NY)

Record details

NPI number1508566845
Entity typeIndividual (Type 1)
GenderFemale
Credentials AGNP
Sole proprietorNo
NPI enumeratedMarch 6, 2023
Last updated in NPPESMarch 6, 2023
Certification dateMarch 6, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2022 (4 years in practice)
Group practice New York University — 5884 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients26
Services billed 123 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $73 3 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at New York University

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 5884 clinicians in the practice; 12 are shown here.

Other providers in West Islip