Diane L Ozog, Mdsc in Naperville, IL
This organization bills under NPI 1245374875, an organization record issued on Feb 16, 2007 with the primary taxonomy Allergy & Immunology Physician. Each clinician who works there has their own NPI and license.
Organization recordNPPES, Aug 2026
1245374875
- Legal name
- Diane L Ozog, Mdsc
- Entity
- Type 2 · organization
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- Practice location
- 1331 W 75TH ST STE 303, Naperville, IL 60540
- Phone
- 630-652-0606
- Enumerated
- Feb 16, 2007
- Record updated
- Oct 30, 2018
- Authorized official
- President (title as filed)
2 clinicians CMS lists with Diane L Ozog Mdsc in Naperville
- Alena Leonova, APN NP-CFamily Nurse Practitioner1730632316
- Diane Ozog, MDAllergy & Immunology Physician1972647154
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.