Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Sylvia Isabel Mignon, PHD
Social Worker in South Weymouth, MA · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1447733225
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Registry record
Entity type Individual (Type 1)
Name Dr. Sylvia Isabel Mignon
Credential PHD
Sex Female
Practice address 28 Snowbird Ave, South Weymouth, MA, 02190
Phone (617) 459-1725
Enumeration date Sep 7, 2018
Last updated in NPPES Sep 7, 2018
Taxonomy & licenses
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD credential
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.
Frequently asked questions
Where does Sylvia Mignon practice?
The practice location on file with NPPES is in South Weymouth, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Sylvia Mignon?
The National Provider Identifier (NPI) for Sylvia Mignon is 1447733225, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-07.