Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Emily Weymouth Sonier, LICSW
Clinical Social Worker in Waban, MA · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1356930606
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Registry record
Entity type Individual (Type 1)
Name Emily Weymouth Sonier
Credential LICSW
Sex Female
Practice address 31 Wilde Rd, Waban, MA, 02468
Phone (617) 558-9250
Enumeration date Jan 12, 2021
Last updated in NPPES Jan 12, 2021
Taxonomy & licenses
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 1029534 (MA) 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.
Frequently asked questions
What is the NPI number for Emily Sonier?
The National Provider Identifier (NPI) for Emily Sonier is 1356930606, a Type 1 (individual) record in the CMS NPPES registry.
Where does Emily Sonier practice?
The practice location on file with NPPES is in Waban, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-12.