Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dr Mark Sorrentino

Optometrist in Buffalo, NY · enumerated 2021 · authorized official Denise Sorrentino, Office Manager.

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

National Provider Identifier

1831765668

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Registry record

Entity type Organization (Type 2)

Legal business name Dr Mark Sorrentino

Practice address 403 Main St Ste 510, Buffalo, NY, 14203

Phone (716) 852-7262

Fax (716) 852-7267

Enumeration date Jun 2, 2021

Last updated in NPPES Jun 2, 2021

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers Primary

Authorized official

Name Denise Sorrentino

Title Office Manager

Phone (716) 536-1179

Other identifiers

Identifier	Type	State	Issuer
01906587	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where is Dr Mark Sorrentino located?

The practice location on file with NPPES is in Buffalo, NY.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2021-06-02. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-02.