Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alaina Cousineau, PA-C

Physician Assistant in Boston, MA · enumerated 2023.

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

National Provider Identifier

1639948425

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Registry record

Entity type Individual (Type 1)

Name Alaina Cousineau

Credential PA-C

Sex Female

Practice address 300 Longwood Ave, Boston, MA, 02115

Phone (617) 355-6000

Enumeration date Dec 21, 2023

Last updated in NPPES Mar 21, 2025

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA101403 (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.

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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 Alaina Cousineau?

Alaina Cousineau is registered in NPPES with the primary taxonomy of Physician Assistant. 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 2025-03-21.