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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

NORTHERN NEUROPSYCHOLOGY, LLC
NPI 1003711078
Clinical Neuropsychologist in Winchester, MA

Active since October 10, 2026
540 MAIN ST STE 17A, WINCHESTER, MA 01890(781) 710-6105(617) 231-9581 Get Directions Write a Review

NPPES record added: October 10, 2026. Verified against the NPPES registry weekly; last sync: October 11, 2026.

About Northern Neuropsychology, Llc NPPES

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

NORTHERN NEUROPSYCHOLOGY, LLC (NPI 1003711078) is a healthcare organization registered as a clinical neuropsychologist in Winchester, Massachusetts and active in the NPI registry since October 2026. The organization lists Nicole Kassissieh, Owner/founder, as its authorized official.

NPPES Registry Identity

NPI1003711078
Entity TypeOrganization
Primary Taxonomy103G00000X
Legal Business NameNORTHERN NEUROPSYCHOLOGY, LLC
Location Address540 MAIN ST STE 17AWinchester, MA 01890-2940
Mailing Address540 Main St Ste 17aWinchester, MA 01890-2940 · (781) 710-6105 · Fax (617) 231-9581
Phone(781) 710-6105
Fax(617) 231-9581
Organization SubpartNo
Authorized OfficialNicole KassissiehOwner/founder · (781) 710-6105
Enumeration DateOctober 10, 2026
NPPES CertifiedOctober 10, 2026
✔ NPI 1003711078 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinical NeuropsychologistBehavioral Health & Social Service Providers
Taxonomy Code103G00000X
Definition
A clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems.
540 MAIN ST STE 17A, Winchester, MA 01890
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Other Providers at the Same Location NPPES

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

BRITTANY IYER
Psychologist (Clinical)
540 MAIN ST STE 17A
WINCHESTER, MA 01890
Middlesex County (617) 765-0056

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 Northern Neuropsychology, LLC's NPI number?

The NPI number for Northern Neuropsychology, LLC is 1003711078. It was assigned to this organization in the NPPES registry on October 10, 2026.

Where is Northern Neuropsychology, LLC located?

Northern Neuropsychology, LLC is located at 540 Main St Ste 17A, Winchester, MA 01890. The listed phone number is (781) 710-6105.

What is Northern Neuropsychology, LLC's specialty?

The primary specialty registered for this NPI is Clinical Neuropsychologist with taxonomy code 103G00000X.

When was this NPI record last updated?

The NPPES record for Northern Neuropsychology, LLC was last updated on October 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 days 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.