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The Commonwealth of Massachusetts

Public Health or Welfare Agency in Chelsea, MA · enumerated 2006 · authorized official John Couillard, Chief Financial Officer.

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

National Provider Identifier

1477643658

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Registry record

Entity type Organization (Type 2)
Legal business name The Commonwealth of Massachusetts
Other name <Unavail>
Practice address 91 Crest Ave, Chelsea, MA, 02150
Phone (617) 884-5660
Enumeration date Oct 16, 2006
Last updated in NPPES Dec 29, 2021

Taxonomy & classification

251K00000X Public Health or Welfare Agency Agencies Primary

Authorized official

Name John Couillard
Title Chief Financial Officer
Phone (617) 887-7103

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.

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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 The Commonwealth of Massachusetts?
The Commonwealth of Massachusetts is registered in NPPES as a Public Health or Welfare Agency (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-29.