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MR. PATRICK S GRISWOLD LMHC, LADC 1
NPI 1639259146
Counselor - Addiction (Substance Use Disorder) in Somerville, MA

Active since October 17, 2006
260 BEACON ST, SOMERVILLE, MA 02143(617) 661-5700 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Mr. Patrick S Griswold Lmhc, Ladc 1 NPPES

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

MR. PATRICK S GRISWOLD LMHC, LADC 1 (NPI 1639259146) is an individual addiction (substance use disorder) provider in Somerville, Massachusetts, licensed in Massachusetts (169) and active in the NPI registry since October 2006.

NPPES Registry Identity

NPI1639259146
Entity TypeIndividualMale
Primary Taxonomy101YA0400X
Provider Legal NameMR. PATRICK S GRISWOLDCredential: LMHC, LADC 1
Location Address260 BEACON STSomerville, MA 02143-3534
Mailing Address260 Beacon StSomerville, MA 02143-3534 · (617) 661-5700
Phone(617) 661-5700
Sole ProprietorYes
Enumeration DateOctober 17, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1639259146 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers
Taxonomy Code101YA0400X
License✔ Licensed in MA · 169
Also ListedCounselor · Mental HealthTaxonomy 101YM0800X · License 3993 (MA)
260 BEACON ST, Somerville, MA 02143
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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.

TIMOTHY J QUINONES
Counselor (Addiction (Substance Use Disorder))
260 BEACON ST
SOMERVILLE, MA 02143
Middlesex County (617) 661-5700
DANA ELLSMORE
Counselor (Addiction (Substance Use Disorder))
260 BEACON ST
SOMERVILLE, MA 02143
Middlesex County (617) 661-5700
DEBORAH SOSIN LICSW
Social Worker (Clinical)
260 BEACON ST
SOMERVILLE, MA 02143
Middlesex County (617) 661-5700
NATALIE HATCHER LPN
Licensed Practical Nurse
260 BEACON ST
SOMERVILLE, MA 02143
Middlesex County (617) 661-5700
JOUMATHE THEODORE
Counselor (Addiction (Substance Use Disorder))
260 BEACON ST
SOMERVILLE, MA 02143
Middlesex County (617) 661-5700
EILEEN P RUSH
Counselor (Mental Health)
260 BEACON ST
SOMERVILLE, MA 02143
Middlesex County (617) 661-5700
TIMOTHY F CASEY
Counselor (Addiction (Substance Use Disorder))
260 BEACON ST
SOMERVILLE, MA 02143
Middlesex County (617) 661-5700
RIVKAH LAPIDUS
Counselor (Addiction (Substance Use Disorder))
260 BEACON ST
SOMERVILLE, MA 02143
Middlesex County (617) 661-5700

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 Patrick Griswold's NPI number?

The NPI number for Patrick Griswold is 1639259146. It was assigned to this individual provider in the NPPES registry on October 17, 2006.

Where is Patrick Griswold located?

Patrick Griswold practices at 260 Beacon St, Somerville, MA 02143. The listed phone number is (617) 661-5700.

What is Patrick Griswold'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 Patrick Griswold was last updated on September 11, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.