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NORTHEWESTERN OPTHALMIC INSTITUTE
NPI 1881754570
Ophthalmology in Glenview, IL

Active since December 11, 2006
3633 WEST LAKE AVENUE, SUITE 104, GLENVIEW, IL 60026(847) 832-3900(847) 832-3904 Get Directions Write a Review

NPPES record last updated: March 15, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Northewestern Opthalmic Institute NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

NORTHEWESTERN OPTHALMIC INSTITUTE (NPI 1881754570) is a healthcare organization registered as an ophthalmology in Glenview, Illinois and active in the NPI registry since December 2006. The organization lists Thomas E Bournias, Dr, as its authorized official.

NPPES Registry Identity

NPI1881754570
Entity TypeOrganization
Primary Taxonomy207W00000X
Legal Business NameNORTHEWESTERN OPTHALMIC INSTITUTE
Location Address3633 WEST LAKE AVENUE, SUITE 104Glenview, IL 60026
Mailing Address3633 West Lake Avenue, Suite 104Glenview, IL 60026 · (847) 832-3900 · Fax (847) 832-3904
Phone(847) 832-3900
Fax(847) 832-3904
Organization SubpartNo
Authorized OfficialThomas E BourniasDr · (847) 832-3900
Enumeration DateDecember 11, 2006
Last NPPES UpdateMarch 15, 2013
✔ NPI 1881754570 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
License✔ Licensed in IL · 36093343
Definition
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
3633 WEST LAKE AVENUE, Glenview, IL 60026
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Other Identifiers 5

Medicare ID-Type UnspecifiedDC3777IL · Railroad Medicare
Medicare UPING12275IL
Medicare ID-Type Unspecified209589IL · Medicare Group
Other7797487IL · Aetna
Medicaid036093343IL

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Northewestern Opthalmic Institute is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Northewestern Opthalmic Institute, which bills Medicare for the services this clinician delivers.

Clinician (1)

Thomas Bournias, M.D.
Ophthalmology
NPI 1386712180
233 E ERIE SUITE 614
Chicago, IL 60611
(312) 703-9990
✔ PECOS✔ Accepts Medicare18 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Northewestern Opthalmic Institute's NPI number?

The NPI number for Northewestern Opthalmic Institute is 1881754570. It was assigned to this organization in the NPPES registry on December 11, 2006.

Where is Northewestern Opthalmic Institute located?

Northewestern Opthalmic Institute is located at 3633 West Lake Avenue Suite 104, Glenview, IL 60026. The listed phone number is (847) 832-3900.

What is Northewestern Opthalmic Institute's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Northewestern Opthalmic Institute enrolled in Medicare?

Yes. Northewestern Opthalmic Institute is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Northewestern Opthalmic Institute?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Ophthalmology) reassigns their Medicare billing to Northewestern Opthalmic Institute. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Northewestern Opthalmic Institute was last updated on March 15, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.