Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Grassi Retina MD Sc

Retina Specialist (Ophthalmology) Physician in Naperville, IL · enumerated 2016 · authorized official Michael Grassi, Owner.

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

National Provider Identifier

1598121113

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Registry record

Entity type Organization (Type 2)

Legal business name Grassi Retina MD Sc

Practice address 1012 95th St, Suite 9, Naperville, IL, 60564

Phone (630) 995-3465

Enumeration date Jan 12, 2016

Last updated in NPPES Jul 11, 2017

Taxonomy & classification

207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License 036115845 (IL) Primary

Authorized official

Name Michael Grassi

Title Owner

Phone (630) 995-3465

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2017-07-11. Verify at npiregistry.cms.hhs.gov.

Where is Grassi Retina MD Sc located?

The practice location on file with NPPES is in Naperville, IL.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-07-11.