WILLIAM HARTIGAN III LCSW
NPI 1730630245
Social Worker - Clinical in Boston, MA

Active since October 19, 2016
800 WASHINGTON ST, BOX 790, BOSTON, MA 02111(617) 636-5000 Get Directions Write a Review

NPPES record last updated: October 17, 2018. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Oct 17, 2018, Oct 19, 2016 (2 updates tracked since 2016).

About William Hartigan Iii Lcsw NPPES

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

WILLIAM HARTIGAN III LCSW (NPI 1730630245) is an individual clinical provider in Boston, Massachusetts, licensed in Massachusetts (221391) and active in the NPI registry since October 2016.

NPPES Registry Identity

NPI1730630245
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameWILLIAM HARTIGAN IIICredential: LCSW
Location Address800 WASHINGTON ST, BOX 790Boston, MA 02111-1552
Mailing Address800 Washington St, Box 1013: Provider EnrollmentBoston, MA 02111-1552 · (617) 636-5000
Sole ProprietorYes
Enumeration DateOctober 19, 2016
Last NPPES UpdateOctober 17, 20182 updates tracked since enumeration
NPI 1730630245 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 · 221391
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.
800 WASHINGTON ST, Boston, MA 02111

Accepted Insurance

Other Providers at the Same Location NPPES 20

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

Internal Medicine (Gastroenterology)
800 WASHINGTON ST, BOX 233
BOSTON, MA 02111
Technician/Technologist (Optician)
800 WASHINGTON ST, BOX 450
BOSTON, MA 02111
Plastic Surgery
800 WASHINGTON ST
BOSTON, MA 02111
Internal Medicine
800 WASHINGTON ST
BOSTON, MA 02111
Internal Medicine (Infectious Disease)
800 WASHINGTON ST
BOSTON, MA 02111
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST
BOSTON, MA 02111
Psychiatry & Neurology (Psychiatry)
800 WASHINGTON ST
BOSTON, MA 02111
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST
BOSTON, MA 02111

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 William Hartigan's NPI number?

The NPI number for William Hartigan is 1730630245. It was assigned to this individual provider in the NPPES registry on October 19, 2016.

Where is William Hartigan located?

William Hartigan practices at 800 Washington St Box 790, Boston, MA 02111. The listed phone number is (617) 636-5000.

What is William Hartigan's specialty?

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

What insurance does William Hartigan accept?

Health plans from Harvard Pilgrim Health Care list William Hartigan 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 William Hartigan was last updated on October 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years 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.