NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Commonwealth of Massachusetts

Community/Behavioral Health Agency in Boston, MA · enumerated 2007 · authorized official Michael Dennis, Chief Financial Officer.

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

National Provider Identifier

1659594802

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Commonwealth of Massachusetts
Parent organization Commonwealth of Massachusets
Practice address 40 Broad Street, 4th Floor, Boston, MA, 02109
Phone (617) 727-5550
Fax (617) 626-7512
Enumeration date Apr 10, 2007
Last updated in NPPES Mar 10, 2026

Taxonomy & classification

251S00000X Community/Behavioral Health Agency Agencies Primary

Authorized official

Name Michael Dennis
Title Chief Financial Officer
Phone (774) 548-6025

Other identifiers

Identifier Type State Issuer
110000087C Medicaid MA -
1803425 Medicaid MA -

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

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Commonwealth of Massachusetts?
Commonwealth of Massachusetts is registered in NPPES as a Community/Behavioral Health Agency (its primary provider taxonomy).

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-10.