David R. Donnersberger, MD
NPI 1003927948ActiveIndividual· Internal Medicine· Winnetka, IL
Internal Medicine (MD) in Winnetka, Illinois, trained at Southern Illinois University School of Medicine (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $706,290 for 5,836 claims, against $149,383 paid for services in 2024. Lilly USA, LLC was the largest of 8 companies reporting payments in 2025, $218.68 in all, mostly food and beverage.
Overview
| NPI | 1003927948 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 31, 2006 |
| Last updated in NPPES | Sep 14, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036111556 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 447 |
|---|---|
| Services billed | 2,806 across 38 procedure codes |
| Paid by Medicare | $149,383 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,836 · 13,710 30-day fills |
|---|---|
| Patients | 475 |
| Total drug cost | $706,290 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Southern Illinois University School of Medicine |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliations
- Northshore University Healthsystem - Evanston HospitalEvanston, IL
- Northwestern Lake Forest HospitalLake Forest, IL
- Northwestern Memorial HospitalChicago, IL
- Swedish HospitalChicago, IL
Other facilities
- Guardian Home Health Care, LLCHome health agency · Northfield, IL
- Residential Home HealthHome health agency · Northbrook, IL
- Vi at the GlenNursing home · Glenview, IL
Industry payments (Open Payments)
- 2025$218.68 · 10 payments from 8 companies
- 2024$329.86 · 16 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $42.86 | 2 |
| Astrazeneca Pharmaceuticals LP | $41.64 | 2 |
| Pfizer Inc. | $35.44 | 1 |
| Glaxosmithkline, LLC. | $25.38 | 1 |
| Amgen Inc. | $22.41 | 1 |
What the 2025 payments were for
- Food and Beverage$218.68 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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