Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Greater Boston Psychiatric Services, LLC

Q: What is the NPI number for Greater Boston Psychiatric Services, LLC?

The NPI for Greater Boston Psychiatric Services, LLC is 1841643699, a Type 2 (organization) record in the CMS NPPES registry.

Adult Mental Health Clinic/Center in Medway, MA · enumerated 2016 · authorized official Caryn Metzger, Owner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1841643699

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Registry record

Entity type Organization (Type 2)

Legal business name Greater Boston Psychiatric Services, LLC

Practice address 165 Main St Unit 111e, Medway, MA, 02053

Phone (508) 321-3210

Enumeration date Jul 18, 2016

Last updated in NPPES Jul 18, 2016

Taxonomy & classification

103TP0016X Prescribing (Medical) Psychologist Behavioral Health & Social Service Providers · License RN272217 (MA) Secondary

261QM0801X Mental Health Clinic/Center (Including Community Mental Health Center) Ambulatory Health Care Facilities · License RN272217 (MA) Secondary

261QM0850X Adult Mental Health Clinic/Center Ambulatory Health Care Facilities · License RN272217 (MA) Primary

Authorized official

Name Caryn Metzger

Title Owner

Phone (617) 312-2825

Other identifiers

Identifier	Type	State	Issuer
1922246743	Other	MA	INDIVIDUAL NPI NUMBER FOR CARYN METZGER

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Who is the authorized official for Greater Boston Psychiatric Services, LLC?

NPPES lists Caryn Metzger (Owner) as the authorized official for this organization.

What is the NPI number for Greater Boston Psychiatric Services, LLC?

The NPI for Greater Boston Psychiatric Services, LLC is 1841643699, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Caroline Stott Clinical Social Worker · Medway, MA NPI 1831525427 Jill Forte Psychiatric/Mental Health Nurse Practitioner · Medway, MA NPI 1306407184

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-07-18.