Mary Ellen Gaeke, MD
NPI 1134180664ActiveIndividual· Internal Medicine, Hematology & Oncology· Middletown, OH
Internal Medicine, Hematology & Oncology (MD) in Middletown, Ohio, trained at University of Chicago, Pritzker School of Medicine (class of 1975). Their prescriptions cost Medicare Part D more than their services did: $2,079,237 for 863 claims, against $35,489 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 3 companies reporting payments in 2025, $76.95 in all, mostly food and beverage.
Overview
| NPI | 1134180664 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 2, 2006 |
| Last updated in NPPES | Mar 13, 2026 |
| Certified by provider | Mar 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 35044786 | OH |
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 - Hematology/Oncology (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 118 |
|---|---|
| Services billed | 454 across 6 procedure codes |
| Paid by Medicare | $35,489 |
Part D prescriptions in 2024
| Prescriptions (claims) | 863 · 1,066 30-day fills |
|---|---|
| Patients | 118 |
| Total drug cost | $2,079,237 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | University of Chicago, Pritzker School of Medicine |
|---|---|
| Graduation year | 1975 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Medical Oncology |
Medical groups
- University Hospitals Medical Group IncCleveland, OH · 2,294 clinicians
- Kettering Independent Medical Group IncXenia, OH · 710 clinicians
Hospital affiliations
- Kettering Health DaytonDayton, OH
- Kettering Health Main CampusKettering, OH
- Soin Medical CenterBeaver Creek, OH
- Uh Cleveland Medical CenterCleveland, OH
- University Hospitals Samaritan Medical CenterAshland, OH
Industry payments (Open Payments)
- 2025$76.95 · 3 payments from 3 companies
- 2024$60.02 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $28.58 | 1 |
| Daiichi Sankyo Inc. | $27.70 | 1 |
| Genentech USA, Inc. | $20.67 | 1 |
What the 2025 payments were for
- Food and Beverage$76.95 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Hematology & Oncology providers in Middletown
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All Internal Medicine, Hematology & Oncology providers in Ohio →