Robert David Schumaker, MD
NPI 1679573752ActiveIndividual· Internal Medicine, Hematology & Oncology· Knoxville, TN
Internal Medicine, Hematology & Oncology (MD) in Knoxville, Tennessee, trained at University of Texas Southwestern Medical School at Dallas (class of 1994). In 2024 Medicare paid $2,819,142 for 628 patients, and Part D covered 1,036 of their prescriptions, 71% of them generic. Astrazeneca Pharmaceuticals LP was the largest of 43 companies reporting payments in 2025, $3,101 in all, mostly food and beverage.
Overview
| NPI | 1679573752 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 29, 2005 |
| Last updated in NPPES | Apr 21, 2025 |
| Certified by provider | Apr 21, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | MD031458 | TN |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 36598 | KY |
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 (KY); Practitioner - Hematology/Oncology (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 628 |
|---|---|
| Services billed | 214,523 across 147 procedure codes |
| Paid by Medicare | $2,819,142 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,036 · 1,479 30-day fills |
|---|---|
| Patients | 241 |
| Total drug cost | $3,247,065 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | University of Texas Southwestern Medical School at Dallas |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Hematology/Oncology |
Medical group
- Tennessee Cancer Specialists PLLCHarrogate, TN · 67 clinicians
Hospital affiliations
- Fort Sanders Regional Medical CenterKnoxville, TN
- Morristown Hamblen Hospital AssociationMorristown, TN
- Parkwest Medical CenterKnoxville, TN
- Physicians Regional Medical CenterPowell, TN
- University Health System, IncKnoxville, TN
Industry payments (Open Payments)
- 2025$3,101 · 141 payments from 43 companies
- 2024$3,396 · 150 payments from 39 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $279.65 | 13 |
| Novartis Pharmaceuticals Corporation | $227.43 | 11 |
| Merck Sharp & Dohme LLC | $201.54 | 8 |
| Daiichi Sankyo Inc. | $185.67 | 8 |
| Pfizer Inc. | $172.29 | 9 |
What the 2025 payments were for
- Food and Beverage$3,001 · 140 payments
- Education$99.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 59 hematologist-oncologists in Knoxville · All hematologist-oncologists in Tennessee