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MR. JOHN D LEAVITT MSW
NPI 1972675320
Counselor - Addiction (Substance Use Disorder) in South Boston, MA

Active since November 14, 2006
210 OLD COLONY AVE, SOUTH BOSTON, MA 02127(617) 268-5000(617) 268-5008 Get Directions Write a Review

NPPES record last updated: January 23, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mr. John D Leavitt Msw NPPES

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

MR. JOHN D LEAVITT MSW (NPI 1972675320) is an individual addiction (substance use disorder) provider in South Boston, Massachusetts, licensed in Massachusetts (1028970) and active in the NPI registry since November 2006.

NPPES Registry Identity

NPI1972675320
Entity TypeIndividualMale
Primary Taxonomy101YA0400X
Provider Legal NameMR. JOHN D LEAVITTCredential: MSW
Location Address210 OLD COLONY AVESouth Boston, MA 02127-2413
Mailing Address210 Old Colony AveSouth Boston, MA 02127-2413 · (617) 268-5000 · Fax (617) 268-5008
Phone(617) 268-5000
Fax(617) 268-5008
Sole ProprietorYes
Enumeration DateNovember 14, 2006
Last NPPES UpdateJanuary 23, 2023
NPPES CertifiedJanuary 23, 2023
✔ NPI 1972675320 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers
Taxonomy Code101YA0400X
License✔ Licensed in MA · 1028970
210 OLD COLONY AVE, South Boston, MA 02127
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Other Providers at the Same Location NPPES 14

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

CHRISTINA MESA LCSW
Social Worker (Clinical)
210 OLD COLONY AVE
BOSTON, MA 02127
Suffolk County (617) 268-5000
JOHN NESTOR LADC 1
Counselor (Addiction (Substance Use Disorder))
210 OLD COLONY AVE
SOUTH BOSTON, MA 02127
Suffolk County (617) 268-5000
JEANNE MARY INTERNICOLA
Counselor (Addiction (Substance Use Disorder))
210 OLD COLONY AVE
SOUTH BOSTON, MA 02127
Suffolk County (617) 268-5000
FABIENNE ERRIE MHA
Counselor (Addiction (Substance Use Disorder))
210 OLD COLONY AVE
SOUTH BOSTON, MA 02127
Suffolk County (781) 353-1967
LISA MACGILLIVRAY
Counselor (Mental Health)
210 OLD COLONY AVE
SOUTH BOSTON, MA 02127
Suffolk County (617) 268-5000
MOLLY KATHLEEN CONWAY
Counselor
210 OLD COLONY AVE
BOSTON, MA 02127
Suffolk County (617) 268-5000
KATHRYN ELIZABETH FACKINA MA
Counselor (Mental Health)
210 OLD COLONY AVE
SOUTH BOSTON, MA 02127
Suffolk County (617) 268-5000
KERRIANN M BRELAND LCSW
Social Worker
210 OLD COLONY AVE
SOUTH BOSTON, MA 02127
Suffolk County (857) 496-4098

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 John Leavitt's NPI number?

The NPI number for John Leavitt is 1972675320. It was assigned to this individual provider in the NPPES registry on November 14, 2006.

Where is John Leavitt located?

John Leavitt practices at 210 Old Colony Ave, South Boston, MA 02127. The listed phone number is (617) 268-5000.

What is John Leavitt's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

When was this NPI record last updated?

The NPPES record for John Leavitt was last updated on January 23, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.