Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Theresa D. Johnson-Studstill, MA

Counselor in Feeding Hills, MA · enumerated 2018.

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

National Provider Identifier

1912415662

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Registry record

Entity type Individual (Type 1)

Name Theresa D. Johnson-Studstill

Credential MA

Sex Female

Practice address 30 Southwick St, Feeding Hills, MA, 01030

Phone (413) 786-6410

Fax (413) 789-9623

Enumeration date Jan 16, 2018

Last updated in NPPES Jul 12, 2023

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Theresa Johnson-Studstill?

Theresa Johnson-Studstill is registered in NPPES with the primary taxonomy of Counselor. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-12.