Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Robert Marcolini, OD

Optometrist in Iselin, NJ · enumerated 2005.

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

National Provider Identifier

1215928320

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Registry record

Entity type Individual (Type 1)

Name William Robert Marcolini

Credential OD

Sex Male

Practice address 485 Route 1 S, Bldg A, Iselin, NJ, 08830

Phone (732) 750-0400

Fax (732) 750-1507

Enumeration date Oct 31, 2005

Last updated in NPPES Jul 2, 2010

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 270A00575600 (NJ) 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
7767200	Medicaid	NJ	-

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 William Marcolini?

William Marcolini is registered in NPPES with the primary taxonomy of Optometrist. 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 2010-07-02.