Leslie A. Greskowiak, APN-CNP
NPI 1164998332ActiveIndividual· Nurse Practitioner· Hinsdale, IL
Nurse Practitioner (APN-CNP) with Endeavor Health Medical Group, practicing in Hinsdale, Illinois. Their prescriptions cost Medicare Part D more than their services did: $45,367 for 731 claims, against $10,108 paid for services in 2024. Hologic Sales and Service, LLC reported $17.04 in payments in 2025, mostly food and beverage. Lists Edward Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1164998332 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APN-CNP |
| Sole proprietor | No |
| NPI issued | Oct 15, 2018 |
| Last updated in NPPES | May 12, 2026 |
| Certified by provider | May 12, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 209018380 | IL |
| Nurse Practitioner, Family | 363LF0000X | 209.018380 | 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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 49 |
|---|---|
| Services billed | 146 across 20 procedure codes |
| Paid by Medicare | $10,108 |
Part D prescriptions in 2024
| Prescriptions (claims) | 731 · 1,834 30-day fills |
|---|---|
| Patients | 105 |
| Total drug cost | $45,367 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Endeavor Health Medical GroupEvanston, IL · 3,350 clinicians
Hospital affiliations
- Edward HospitalNaperville, IL
- Elmhurst Memorial HospitalElmhurst, IL
Industry payments (Open Payments)
- 2025$17.04 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Hologic Sales and Service, LLC | $17.04 | 1 |
What the 2025 payments were for
- Food and Beverage$17.04 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 36 nurse practitioners in Hinsdale · All nurse practitioners in Illinois