Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cynthia Cyr

Registered Nurse in Greenfield, MA · enumerated 2023.

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

National Provider Identifier

1164109971

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Registry record

Entity type Individual (Type 1)

Name Cynthia Cyr

Sex Female

Practice address 21 Kenwood St, Greenfield, MA, 01301

Phone (413) 747-0705

Enumeration date Jul 3, 2023

Last updated in NPPES Jul 3, 2023

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License RN195233 (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 Cynthia Cyr?

Cynthia Cyr is registered in NPPES with the primary taxonomy of Registered Nurse. 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 2023-07-03.