Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

WILLIAM DEMPSEY LICSW
NPI 1679070429
Social Worker - Clinical in Brookline, MA

Q: What is William Dempsey's NPI number?

The NPI number for William Dempsey is 1679070429. It was assigned to this individual provider in the NPPES registry on April 9, 2018. The provider is also known as Will Dempsey.

Q: What is William Dempsey's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for William Dempsey was last updated on September 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.

Active since April 09, 2018PECOS Enrolled

1180 BEACON ST STE 4C, BROOKLINE, MA 02446(617) 237-6664(617) 977-2891 Get Directions Write a Review

NPPES record last updated: September 10, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 10, 2026, Jan 9, 2023, Jul 27, 2021 and 2 more (5 updates tracked since 2018).

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About William Dempsey Licsw NPPES

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

WILLIAM DEMPSEY LICSW (NPI 1679070429) is an individual clinical provider in Brookline, Massachusetts, licensed in Massachusetts (122323) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1679070429

Entity TypeIndividualMale

Primary Taxonomy1041C0700X

Provider Legal NameWILLIAM DEMPSEYCredential: LICSW

Location Address1180 BEACON ST STE 4CBrookline, MA 02446-3806

Mailing Address1500 Locust St Apt 2801Philadelphia, PA 19102-4320 · (617) 237-6664 · Fax (617) 977-2891

Phone(617) 237-6664

Fax(617) 977-2891

Sole ProprietorNo

Enumeration DateApril 9, 2018

Last NPPES UpdateSeptember 10, 20265 updates tracked since enumeration

NPPES CertifiedSeptember 10, 2026

✔ NPI 1679070429 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code1041C0700X

Licenses✔ Licensed in MA · 122323✔ Licensed in NY · 094342✔ Licensed in IL · 149022171

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.

1180 BEACON ST STE 4C, Brookline, MA 02446

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Other Names 1

Other Name (5)Will Dempsey

Secondary Practice Locations 2

Location 1867 Boylston StBoston, MA 02116-2774 · Phone (617) 237-6664 · Fax (617) 977-2891

Location 226 Market St Ste 1Northampton, MA 01060-3268 · Phone (617) 237-6664 · Fax (617) 977-2891

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, Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William Dempsey Licsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02446 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$0.00 typical visit price

range $63.72 – $189.86

Typical copayment $0.00 (range $15.93 – $47.46)

Most-billed visit code NA

Established Patient

$78.84 typical visit price

range $21.07 – $155.29

Typical copayment $19.71 (range $5.26 – $38.82)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 7

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

MR. JOHN MAYO

Counselor (Mental Health)