Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Leigha Kerwin, PSYD

Clinical Psychologist in Newton, MA · enumerated 2021.

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

National Provider Identifier

1104494491

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Registry record

Entity type Individual (Type 1)

Name Leigha Kerwin

Credential PSYD

Sex Female

Practice address 44 Thornton St, Newton, MA, 02458

Phone (617) 244-2700

Enumeration date Jun 14, 2021

Last updated in NPPES Dec 4, 2025

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY10001635 (MA) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD 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.

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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 Leigha Kerwin?

Leigha Kerwin is registered in NPPES with the primary taxonomy of Clinical Psychologist. 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 2025-12-04.