Bruce Gershenhorn, DO
NPI 1588796478ActiveIndividual· Internal Medicine, Hematology & Oncology· McHenry, IL
Internal Medicine, Hematology & Oncology (DO) in McHenry, Illinois, trained at Philadelphia College of Osteopathic Medicine (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $1,683,763 for 564 claims, against $54,083 paid for services in 2024. E.R. Squibb & Sons, L.L.C. reported $112.91 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1588796478 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Mar 9, 2007 |
| Last updated in NPPES | Apr 23, 2026 |
| Certified by provider | Apr 23, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 036127065 | IL |
| Internal Medicine, Medical Oncology | 207RX0202X | 036127065 | IL |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 231510 | NY |
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 - Medical Oncology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 265 |
|---|---|
| Services billed | 648 across 14 procedure codes |
| Paid by Medicare | $54,083 |
Part D prescriptions in 2024
| Prescriptions (claims) | 564 · 797 30-day fills |
|---|---|
| Patients | 127 |
| Total drug cost | $1,683,763 |
| Generic share | 58% of claims |
Education and affiliations
| Medical school | Philadelphia College of Osteopathic Medicine |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Medical Oncology |
| Secondary specialties | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Advocate Health and Hospitals CorporationChicago, IL · 3,118 clinicians
Hospital affiliations
- Advocate Good Shepherd HospitalBarrington, IL
- Advocate Illinois Masonic Medical CenterChicago, IL
- Advocate Lutheran General HospitalPark Ridge, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Northwestern Medicine McHenryMcHenry, IL
Industry payments (Open Payments)
- 2025$112.91 · 1 payment from 1 company
- 2024$164.25 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $112.91 | 1 |
What the 2025 payments were for
- Food and Beverage$112.91 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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