Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Matt Rouillard, MSW

Clinical Social Worker in Dorchester, MA · enumerated 2007.

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

National Provider Identifier

1932319621

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Matt Rouillard

Credential MSW

Sex Male

Practice address 317 Blue Hill Ave, Dorchester, MA, 02121

Phone (617) 427-4470

Enumeration date May 23, 2007

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers Primary

Other identifiers

Identifier	Type	State	Issuer
1309587	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

Where does Matt Rouillard practice?

The practice location on file with NPPES is in Dorchester, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Matt Rouillard?

The National Provider Identifier (NPI) for Matt Rouillard is 1932319621, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.