NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Gerstein Eye Institute

Ophthalmology Physician in Chicago, IL · enumerated 2007 · authorized official Danelle Torres, Practice Administrator.

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

National Provider Identifier

1578772349

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Gerstein Eye Institute
Practice address 3042 W Peterson Ave, Chicago, IL, 60659
Phone (773) 973-3223
Fax (773) 973-1119
Enumeration date May 21, 2007
Last updated in NPPES Dec 28, 2021

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Danelle Torres
Title Practice Administrator
Phone (773) 973-3223

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

What type of organization is Gerstein Eye Institute?
Gerstein Eye Institute is registered in NPPES as a Ophthalmology Physician (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-28.