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Mr. William Giannouloudis

Community Health Worker in Brockton, MA · enumerated 2016 · practices at South Bay Mental Health.

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

National Provider Identifier

1568818474

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Registry record

Entity type Individual (Type 1)
Name Mr. William Giannouloudis
Sex Male
Practice address 103 Commercial St, Brockton, MA, 02302
Phone (508) 521-2200
Enumeration date May 10, 2016
Last updated in NPPES Aug 27, 2020

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License S15309944 (MA) Secondary
172V00000X Community Health Worker Other Service Providers Primary

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 the NPI number for William Giannouloudis?
The National Provider Identifier (NPI) for William Giannouloudis is 1568818474, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Giannouloudis practice?
The practice location on file with NPPES is in Brockton, MA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-27.