Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Madison Kennedy Mercier, LCSW
Social Worker in South Hadley, MA · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1396328746
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Registry record
Entity type Individual (Type 1)
Name Madison Kennedy Mercier
Credential LCSW
Sex Female
Practice address 3 Lathrop St, South Hadley, MA, 01075
Phone (413) 313-1835
Enumeration date May 4, 2021
Last updated in NPPES May 4, 2021
Taxonomy & licenses
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy.
About the LCSW 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
What specialty is Madison Mercier?
Madison Mercier is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-05-04.