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KATHERINE DIFILLIPPO MONTAGUE LICSW MSW
NPI 1689099442
Social Worker - Clinical in Plymouth, MA

Active since March 03, 2014Opted out of Medicare · through Jan 1, 2028
131 SAMOSET ST, PLYMOUTH, MA 02360(617) 955-6358(617) 890-6848 Get Directions Write a Review

NPPES record last updated: November 13, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Nov 13, 2025, Nov 5, 2025, Oct 20, 2023 and 3 more (6 updates tracked since 2018).

About Katherine Difillippo Montague Licsw Msw NPPES

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

KATHERINE DIFILLIPPO MONTAGUE LICSW MSW (NPI 1689099442) is an individual clinical provider in Plymouth, Massachusetts, licensed in Massachusetts (120123) and active in the NPI registry since March 2014. She has opted out of Medicare through January 1, 2028.

NPPES Registry Identity

NPI1689099442
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameKATHERINE DIFILLIPPO MONTAGUECredential: LICSW MSW
Location Address131 SAMOSET STPlymouth, MA 02360-4801
Mailing Address131 Samoset St # 5051Plymouth, MA 02360-4801 · (617) 955-6358 · Fax (617) 890-6848
Phone(617) 955-6358
Fax(617) 890-6848
Sole ProprietorYes
Enumeration DateMarch 3, 2014
Last NPPES UpdateNovember 13, 20256 updates tracked since enumeration
NPPES CertifiedNovember 13, 2025
✔ NPI 1689099442 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in MA · 120123
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.
131 SAMOSET ST, Plymouth, MA 02360
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Katherine Difillippo Montague Licsw Msw has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 1, 2026 through January 1, 2028.

Opt-Out Effective DateJanuary 1, 2026
Opt-Out In Effect ThroughJanuary 1, 2028Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES 2

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

KDM PSYCHOTHERAPY PLLC
Social Worker (Clinical)
131 SAMOSET ST, 1051
PLYMOUTH, MA 02360
Plymouth County (617) 955-6358
CLARITY PATH HEALTH MANAGEMENT
Nurse Practitioner (Psychiatric/Mental Health)
131 SAMOSET ST
PLYMOUTH, MA 02360
Plymouth County (339) 244-0275

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 Katherine Montague's NPI number?

The NPI number for Katherine Montague is 1689099442. It was assigned to this individual provider in the NPPES registry on March 3, 2014.

Where is Katherine Montague located?

Katherine Montague practices at 131 Samoset St, Plymouth, MA 02360. The listed phone number is (617) 955-6358.

What is Katherine Montague's specialty?

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

Is Katherine Montague enrolled in Medicare?

No. Katherine Montague has opted out of Medicare through January 1, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

What insurance does Katherine Montague accept?

Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Katherine Montague as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Katherine Montague was last updated on November 13, 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.