Aileen Wendy Zhen, DO
NPI 1174985998ActiveIndividual· Internal Medicine, Nephrology· Springfield, IL
Internal Medicine, Nephrology (DO) in Springfield, Illinois, trained at University of New England, College of Osteo Medicine (class of 2016). Their prescriptions cost Medicare Part D more than their services did: $203,541 for 2,174 claims, against $114,992 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 3 companies reporting payments in 2025, $178.43 in all, mostly food and beverage.
Overview
| NPI | 1174985998 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Mar 22, 2016 |
| Last updated in NPPES | Jul 7, 2021 |
| Certified by provider | Jul 7, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 036.155827 | IL |
| Internal Medicine | 207R00000X | OT017265 | PA |
| Internal Medicine, Nephrology | 207RN0300X | 279360 | MA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 437 |
|---|---|
| Services billed | 1,356 across 21 procedure codes |
| Paid by Medicare | $114,992 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,174 · 4,298 30-day fills |
|---|---|
| Patients | 327 |
| Total drug cost | $203,541 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of New England, College of Osteo Medicine |
|---|---|
| Graduation year | 2016 |
| Medicare specialty | Nephrology |
Medical group
- Springfield Clinic, LLPSpringfield, IL · 687 clinicians
Hospital affiliations
- Abraham Lincoln Memorial HospitalLincoln, IL
- Jacksonville Memorial HospitalJacksonville, IL
- Memorial Medical CenterSpringfield, IL
- St Johns HospitalSpringfield, IL
Other facilities
- Davita Lincoln DialysisDialysis facility · Lincoln, IL
- Davita Springfield Montvale DialysisDialysis facility · Springfield, IL
- Davita Springfield South DialysisDialysis facility · Springfield, IL
- Fmc - Koke Mill RoadDialysis facility · Springfield, IL
Industry payments (Open Payments)
- 2025$178.43 · 9 payments from 3 companies
- 2024$149.35 · 7 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $87.42 | 5 |
| Amgen Inc. | $70.95 | 3 |
| Novo Nordisk Inc | $20.06 | 1 |
What the 2025 payments were for
- Food and Beverage$178.43 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 15 nephrologists in Springfield · All nephrologists in Illinois