MARY LYNN DIAZ LCSW
NPI 1801761507
Social Worker - Clinical in Watertown, MA

Active since October 10, 2025
480 PLEASANT ST, WATERTOWN, MA 02472(617) 272-9045 Get Directions Write a Review

NPPES record last updated: October 10, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mary Lynn Diaz Lcsw NPPES

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

MARY LYNN DIAZ LCSW (NPI 1801761507) is an individual clinical provider in Watertown, Massachusetts and active in the NPI registry since October 2025.

NPPES Registry Identity

NPI1801761507
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMARY LYNN DIAZCredential: LCSW
Location Address480 PLEASANT STWatertown, MA 02472-2463
Mailing Address256 S Westfield StFeeding Hills, MA 01030-2730
Sole ProprietorNo
Enumeration DateOctober 10, 2025
NPPES CertifiedOctober 10, 2025
NPI 1801761507 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
480 PLEASANT ST, Watertown, MA 02472

Other Providers at the Same Location NPPES 6

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

Nurse Practitioner (Psychiatric/Mental Health)
480 PLEASANT ST
WATERTOWN, MA 02472
Counselor (Mental Health)
480 PLEASANT ST
WATERTOWN, MA 02472
Clinic/Center (Urgent Care)
480 PLEASANT ST
WATERTOWN, MA 02472
Student in an Organized Health Care Education/Training Program
480 PLEASANT ST
WATERTOWN, MA 02472
Social Worker (Clinical)
480 PLEASANT ST
WATERTOWN, MA 02472
Counselor
480 PLEASANT ST
WATERTOWN, MA 02472

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 Mary Diaz's NPI number?

The NPI number for Mary Diaz is 1801761507. It was assigned to this individual provider in the NPPES registry on October 10, 2025.

Where is Mary Diaz located?

Mary Diaz practices at 480 Pleasant St, Watertown, MA 02472. The listed phone number is (617) 272-9045.

What is Mary Diaz's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

When was this NPI record last updated?

The NPPES record for Mary Diaz was last updated on October 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.