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Mr. Dennis Osiak

Contact Lens Fitter in Williamsville, NY · enumerated 2006 · practices at Bleich, Inc..

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

National Provider Identifier

1174694681

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Registry record

Entity type Individual (Type 1)
Name Mr. Dennis Osiak
Sex Male
Practice address 4545 Transit Rd, Eastern Hills Mall, Williamsville, NY, 14221
Phone (716) 632-5497
Fax (716) 632-1182
Enumeration date Nov 13, 2006
Last updated in NPPES Jul 24, 2008

Taxonomy & licenses

156FC0801X Contact Lens Fitter Eye and Vision Services Providers · License C0036231 (NY) Primary

Other identifiers

Identifier Type State Issuer
00608851 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

Where does Dennis Osiak practice?
The practice location on file with NPPES is in Williamsville, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Dennis Osiak?
The National Provider Identifier (NPI) for Dennis Osiak is 1174694681, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-24.