Winnetka Avenue Physicians, Sc in Winnetka, IL
This organization bills under NPI 1346633971, an organization record issued on Mar 6, 2015 with the primary taxonomy Internal Medicine Physician. Each clinician who works there has their own NPI and license.
Organization recordNPPES, Aug 2026
1346633971
- Legal name
- Winnetka Avenue Physicians, Sc
- Entity
- Type 2 · organization
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- Practice location
- 525 WINNETKA AVE, Winnetka, IL 60093
- Phone
- 847-501-5060
- Mailing address
- Northbrook, IL
- Enumerated
- Mar 6, 2015
- Record updated
- Jan 26, 2016
- Authorized official
- Physician/Owner (title as filed)
2 clinicians CMS lists with Winnetka Avenue Physicians Sc in Winnetka
- Roman Mandzij, DOInternal Medicine Physician1841239902
- Thomas Stern, MDInternal Medicine Physician1477592665
Source: CMS Doctors and Clinicians group affiliations, matched by practice name and city.
Checking an organization
- Confirm the business with the Illinois secretary of state.
- Check the HHS-OIG exclusion list for the organization.
- Verify each clinician on their own record and the state license search.
Common questions
Is an organization NPI a license?
No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.
Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.