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Jennifer O Tessier-Williford, BCBA

Behavior Analyst in West Springfield, MA · enumerated 2021.

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

National Provider Identifier

1326705377

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Registry record

Entity type Individual (Type 1)
Name Jennifer O Tessier-Williford
Credential BCBA
Sex Female
Practice address 900 Riverdale Street, Unit 286, West Springfield, MA, 01089
Phone (413) 563-1067
Enumeration date Nov 24, 2021
Last updated in NPPES Jul 6, 2026

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers Primary
101Y00000X Counselor Behavioral Health & Social Service Providers Secondary

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

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.
What specialty is Jennifer Tessier-Williford?
Jennifer Tessier-Williford is registered in NPPES with the primary taxonomy of Behavior Analyst. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-06.