Katherine Osusky Castle, M.D.
NPI 1336561539ActiveIndividual· Radiology, Radiation Oncology· Nashville, TN
Radiology, Radiation Oncology (M.D.) with Tennessee Oncology PLLC, practicing in Nashville, Tennessee. Mostly services rather than prescriptions: Medicare paid $38,363 for 51 patients in 2024, with only 28 Part D claims. Siemens Medical Solutions USA, Inc. reported $24.60 in payments in 2025, mostly food and beverage. Lists Ascension Saint Thomas Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1336561539 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 8, 2014 |
| Last updated in NPPES | Jul 24, 2025 |
| Certified by provider | Jul 24, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | 74568 | TN |
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 - Radiation Oncology (LA); Practitioner - Radiation Oncology (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 51 |
|---|---|
| Services billed | 534 across 25 procedure codes |
| Paid by Medicare | $38,363 |
Part D prescriptions in 2024
| Prescriptions (claims) | 28 · 30 30-day fills |
|---|---|
| Patients | 17 |
| Total drug cost | $548.49 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Radiation Oncology |
| Telehealth | Offers telehealth |
Medical group
- Tennessee Oncology PLLCNashville, TN · 358 clinicians
Hospital affiliations
- Ascension Saint Thomas HospitalNashville, TN
- Tristar Centennial Medical CenterNashville, TN
Industry payments (Open Payments)
- 2025$24.60 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Siemens Medical Solutions USA, Inc. | $24.60 | 1 |
What the 2025 payments were for
- Food and Beverage$24.60 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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