NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Guillermo Ysmael Reyes

Optician in Bronx, NY · enumerated 2006 · practices at Burnside Optical Inc..

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

National Provider Identifier

1801964770

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Registry record

Entity type Individual (Type 1)
Name Guillermo Ysmael Reyes
Sex Male
Practice address Bronx, NY, 10453
Phone (718) 299-5454
Fax (718) 299-0770
Enumeration date Nov 30, 2006
Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

156FX1800X Optician Eye and Vision Services Providers · License 01812019 (NY) Primary

Other identifiers

Identifier Type State Issuer
01812019 Medicaid NY -

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

What specialty is Guillermo Reyes?
Guillermo Reyes is registered in NPPES with the primary taxonomy of Optician. 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 2007-07-08.