Diane L. Ozog, MD
NPI 1972647154ActiveIndividual· Allergy & Immunology· Naperville, IL
Allergy & Immunology (MD) in Naperville, Illinois, trained at Chicago College of Medicine and Surgery (class of 1982). Their prescriptions cost Medicare Part D more than their services did: $174,478 for 788 claims, against $49,772 paid for services in 2024. Genzyme Corporation was the largest of 4 companies reporting payments in 2025, $731.64 in all, mostly food and beverage.
Overview
| NPI | 1972647154 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 19, 2007 |
| Last updated in NPPES | Oct 3, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | 036067853 | IL |
| Pediatrics, Pediatric Allergy/Immunology | 2080P0201X | 036067853 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Allergy/Immunology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 163 |
|---|---|
| Services billed | 2,773 across 22 procedure codes |
| Paid by Medicare | $49,772 |
Part D prescriptions in 2024
| Prescriptions (claims) | 788 · 1,436 30-day fills |
|---|---|
| Patients | 162 |
| Total drug cost | $174,478 |
| Generic share | 58% of claims |
Education and affiliations
| Medical school | Chicago College of Medicine and Surgery |
|---|---|
| Graduation year | 1982 |
| Medicare specialty | Allergy/Immunology |
| Secondary specialties | Pediatric Medicine |
Medical group
- Diane L Ozog, MdscNaperville, IL · 2 clinicians
Hospital affiliation
- Edward HospitalNaperville, IL
Industry payments (Open Payments)
- 2025$731.64 · 7 payments from 4 companies
- 2024$1,319 · 12 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $246.37 | 2 |
| Ars Pharmaceuticals Operations, Inc. | $240.79 | 2 |
| Astrazeneca Pharmaceuticals LP | $210.48 | 2 |
| Amgen Inc. | $34.00 | 1 |
What the 2025 payments were for
- Food and Beverage$697.64 · 6 payments
- Education$34.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Allergy & Immunology providers in Naperville
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