THOMAS PATRICK WITHERBY
NPI 1417815598
Counselor - Addiction (Substance Use Disorder) in Boston, MA

Q: What is Thomas Witherby's NPI number?

The NPI number for Thomas Witherby is 1417815598. It was assigned to this individual provider in the NPPES registry on January 15, 2026.

Q: What is Thomas Witherby's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Thomas Witherby was last updated on January 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.

Active since January 15, 2026

23 BRADSTON ST FL 1, BOSTON, MA 02118(617) 271-2193 Get Directions Write a Review

NPPES record last updated: January 15, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Thomas Patrick Witherby NPPES

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

THOMAS PATRICK WITHERBY (NPI 1417815598) is an individual addiction (substance use disorder) provider in Boston, Massachusetts and active in the NPI registry since January 2026.

NPPES Registry Identity

NPI1417815598

Entity TypeIndividualMale

Primary Taxonomy101YA0400X

Provider Legal NameTHOMAS PATRICK WITHERBY

Location Address23 BRADSTON ST FL 1Boston, MA 02118-2703

Mailing Address755 Tremont St Apt 701Boston, MA 02118-1170

Phone(617) 271-2193

Sole ProprietorNo

Enumeration DateJanuary 15, 2026

NPPES CertifiedJanuary 15, 2026

✔ NPI 1417815598 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

23 BRADSTON ST FL 1, Boston, MA 02118

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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.

MARINA LOUIS

Counselor (Addiction (Substance Use Disorder))

23 BRADSTON ST FL 1
BOSTON, MA 02118

Suffolk County (617) 318-6480

CHRISTOPHER HERTER

Counselor (Addiction (Substance Use Disorder))

23 BRADSTON ST FL 1
BOSTON, MA 02118

Suffolk County (617) 318-6480

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 Thomas Witherby's NPI number?

The NPI number for Thomas Witherby is 1417815598. It was assigned to this individual provider in the NPPES registry on January 15, 2026.

Where is Thomas Witherby located?

Thomas Witherby practices at 23 Bradston St Fl 1, Boston, MA 02118. The listed phone number is (617) 271-2193.

What is Thomas Witherby'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 Thomas Witherby was last updated on January 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.