Ontario Street Operatory
NPI 1477017333 · Ambulatory Surgical Clinic/Center · Chicago, IL
Ontario Street Operatory is a Ambulatory Surgical Clinic/Center organization in Chicago, IL (NPI 1477017333).
Provider details
- NPI number
- 1477017333
- Entity type
- Organization
- Primary specialty
- Ambulatory Surgical Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Jeffrey Weinzweig, Owner(312) 642-0400
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 20 W Ontario StChicago, IL 60654-3809Phone: (312) 642-0400
Registry dates
- Enumerated
- 2019-01-24
- Last updated
- 2019-02-05
Frequently asked questions
- What is Ontario Street Operatory's NPI number?
- Ontario Street Operatory's National Provider Identifier (NPI) is 1477017333, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Ontario Street Operatory?
- Ontario Street Operatory is classified in the NPPES registry as Ambulatory Surgical Clinic/Center (Ambulatory Health Care Facilities).
- Where is Ontario Street Operatory located?
- Ontario Street Operatory's practice location on file with NPPES is 22 W Ontario St, Chicago, IL 60654-5169.
- What is Ontario Street Operatory's phone number?
- The practice phone number listed in the NPPES registry for Ontario Street Operatory is (312) 642-0400.
- Who is the authorized official for Ontario Street Operatory?
- The authorized official listed on Ontario Street Operatory's NPPES record is Jeffrey Weinzweig, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Ontario Street Operatory's NPI active?
- Yes — Ontario Street Operatory's NPI (1477017333) is active in the NPPES registry as of the last update on 2019-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.