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STEPHANIE MARIE DUFF
NPI 1396365748
Speech-Language Pathologist in Brookhaven, NY

Active since April 24, 2020
101 FIREPLACE NECK RD, BROOKHAVEN, NY 11719(516) 318-2940 Get Directions Write a Review

NPPES record last updated: May 6, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: May 6, 2025, Apr 24, 2020 (2 updates tracked since 2020).

About Stephanie Marie Duff NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

STEPHANIE MARIE DUFF (NPI 1396365748) is an individual speech-language pathologist provider in Brookhaven, New York and active in the NPI registry since April 2020.

NPPES Registry Identity

NPI1396365748
Entity TypeIndividualFemale
Primary Taxonomy235Z00000X
Provider Legal NameSTEPHANIE MARIE DUFF
Location Address101 FIREPLACE NECK RDBrookhaven, NY 11719-9796
Mailing Address668 N Broome AveLindenhurst, NY 11757-2801 · (516) 318-2940
Phone(516) 318-2940
Sole ProprietorNo
Enumeration DateApril 24, 2020
Last NPPES UpdateMay 6, 20252 updates tracked since enumeration
NPPES CertifiedMay 6, 2025
✔ NPI 1396365748 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpeech-Language PathologistSpeech, Language and Hearing Service Providers
Taxonomy Code235Z00000X
Definition
The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.
101 FIREPLACE NECK RD, Brookhaven, NY 11719
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Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. STEPHANIE MILLER MS CCC/SLP
Speech-Language Pathologist
101 FIREPLACE NECK RD
BROOKHAVEN, NY 11719
Suffolk County (631) 730-1702
PATRICIA ANN COLLINS-COLLIER
Speech-Language Pathologist
101 FIREPLACE NECK RD
BROOKHAVEN, NY 11719
Suffolk County (631) 730-1700
CRISTINA MARQUES MARTINS M.A.
Speech-Language Pathologist
101 FIREPLACE NECK RD
BROOKHAVEN, NY 11719
Suffolk County (631) 730-1700

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Stephanie Duff's NPI number?

The NPI number for Stephanie Duff is 1396365748. It was assigned to this individual provider in the NPPES registry on April 24, 2020.

Where is Stephanie Duff located?

Stephanie Duff practices at 101 Fireplace Neck Rd, Brookhaven, NY 11719. The listed phone number is (516) 318-2940.

What is Stephanie Duff's specialty?

The primary specialty registered for this NPI is Speech-Language Pathologist with taxonomy code 235Z00000X.

When was this NPI record last updated?

The NPPES record for Stephanie Duff was last updated on May 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.