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ONTARIO STREET OPERATORY
NPI 1477017333
Clinic/Center - Ambulatory Surgical in Chicago, IL

Active since January 24, 2019
22 W ONTARIO ST, CHICAGO, IL 60654(312) 642-0400 Get Directions Write a Review

NPPES record last updated: February 5, 2019. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Feb 5, 2019, Jan 24, 2019 (2 updates tracked since 2019).

About Ontario Street Operatory NPPES

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

ONTARIO STREET OPERATORY (NPI 1477017333) is a healthcare organization registered as an ambulatory surgical in Chicago, Illinois and active in the NPI registry since January 2019. The organization maintains a secondary practice location in Chicago and lists Jeffrey Weinzweig, Owner, as its authorized official.

NPPES Registry Identity

NPI1477017333
Entity TypeOrganization
Primary Taxonomy261QA1903X
Legal Business NameONTARIO STREET OPERATORY
Location Address22 W ONTARIO STChicago, IL 60654-5169
Mailing Address22 W Ontario StChicago, IL 60654-5169 · (312) 642-0400
Phone(312) 642-0400
Organization SubpartNo
Authorized OfficialJeffrey WeinzweigOwner · (312) 642-0400
Enumeration DateJanuary 24, 2019
Last NPPES UpdateFebruary 5, 20192 updates tracked since enumeration
✔ NPI 1477017333 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Ambulatory SurgicalAmbulatory Health Care Facilities
Taxonomy Code261QA1903X
22 W ONTARIO ST, Chicago, IL 60654
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Secondary Practice Location 1

Location 120 W Ontario StChicago, IL 60654-3809 · Phone (312) 642-0400

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ONTARIO STREET SURGICAL ASSISTANTS LLC
Specialist/Technologist, Other (Surgical Assistant)
22 W ONTARIO ST
CHICAGO, IL 60654
Cook County (312) 642-0400

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 Ontario Street Operatory's NPI number?

The NPI number for Ontario Street Operatory is 1477017333. It was assigned to this organization in the NPPES registry on January 24, 2019.

Where is Ontario Street Operatory located?

Ontario Street Operatory is located at 22 W Ontario St, Chicago, IL 60654. The listed phone number is (312) 642-0400.

What is Ontario Street Operatory's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Ambulatory Surgical, with taxonomy code 261QA1903X.

When was this NPI record last updated?

The NPPES record for Ontario Street Operatory was last updated on February 5, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.