Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Steven Gary Mizerak I, O.D.

Optometrist in Worcester, MA · enumerated 2007 · practices at Luxottica of America Inc..

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

National Provider Identifier

1598887267

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Registry record

Entity type Individual (Type 1)

Name Dr. Steven Gary Mizerak I

Credential O.D.

Sex Male

Practice address 7 Neponset St, Worcester, MA, 01606

Phone (508) 856-0613

Enumeration date Apr 4, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 3626 (MA) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
3626	Other	MA	MA LICENSE NUMBER

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

Where does Steven Mizerak practice?

The practice location on file with NPPES is in Worcester, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Steven Mizerak?

The National Provider Identifier (NPI) for Steven Mizerak is 1598887267, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Luxottica of America Inc. Eyewear Supplier · Worcester, MA NPI 1649325689 Tarah Joseph Specialist · Worcester, MA NPI 1962705947

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.