Mary E. Wassilak, WHNP-BC
NPI 1811138944ActiveIndividual· Nurse Practitioner· Geneva, IL
Nurse Practitioner (WHNP-BC) in Geneva, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 2007). Enrolled in Medicare as practitioner - nurse practitioner. Sumitomo Pharma America, Inc. reported $39.69 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1811138944 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | WHNP-BC |
| Sole proprietor | No |
| NPI issued | Mar 19, 2009 |
| Last updated in NPPES | Oct 6, 2023 |
| Certified by provider | Oct 6, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 209006774 | IL |
| Nurse Practitioner, Women's Health | 363LW0102X | 209.006774 | IL |
| Nurse Practitioner, Obstetrics & Gynecology | 363LX0001X | 209006774 | IL |
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 - Nurse Practitioner (IL) |
|---|
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Nurse Practitioner |
Medical group
- Central Dupage Physician GroupGeneva, IL · 1,080 clinicians
Industry payments (Open Payments)
- 2025$39.69 · 1 payment from 1 company
- 2024$102.91 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sumitomo Pharma America, Inc. | $39.69 | 1 |
What the 2025 payments were for
- Food and Beverage$39.69 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 37 nurse practitioners in Geneva · All nurse practitioners in Illinois