Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Daniel Williams, OPHTHALMI DISPENSARY

Optician in Staten Island, NY · enumerated 2026 · practices at Williams Eye Works, Inc.

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

National Provider Identifier

1598610487

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Registry record

Entity type Individual (Type 1)

Name John Daniel Williams

Credential OPHTHALMI DISPENSARY

Sex Male

Practice address 1884 Victory Blvd, Staten Island, NY, 10314

Phone (718) 273-5000

Enumeration date Mar 4, 2026

Last updated in NPPES Mar 4, 2026

Taxonomy & licenses

156FX1800X Optician Eye and Vision Services Providers · License 010231 (NY) 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

Is NPI 1598610487 active?

Yes, as of the latest NPPES snapshot, NPI 1598610487 is active (record last updated 2026-03-04).

How do I verify John Williams's NPI record?

Cross-check NPI 1598610487 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Daniel Creighton Optometrist · Staten Island, NY NPI 1386650422 Christopher Williams Optician · Staten Island, NY NPI 1023116787 Williams Eye Works, Inc Optician · Staten Island, NY NPI 1871691378 Michal Zylinski Optometrist · Staten Island, NY NPI 1891137212

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-04.