Nathaniel Robert Piel, M.D.
NPI 1649565755ActiveIndividual· Internal Medicine· Knoxville, TN
Internal Medicine (M.D.) in Knoxville, Tennessee, trained at Georgetown University School of Medicine (class of 2011). Their prescriptions cost Medicare Part D more than their services did: $735,952 for 6,758 claims, against $179,364 paid for services in 2024. Novo Nordisk Inc was the largest of 7 companies reporting payments in 2025, $181.86 in all, mostly food and beverage.
Overview
| NPI | 1649565755 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 16, 2011 |
| Last updated in NPPES | Feb 19, 2020 |
| Certified by provider | Feb 19, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 257895 | MA |
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 - Internal Medicine (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 414 |
|---|---|
| Services billed | 5,614 across 83 procedure codes |
| Paid by Medicare | $179,364 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,758 · 16,150 30-day fills |
|---|---|
| Patients | 506 |
| Total drug cost | $735,952 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Georgetown University School of Medicine |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Faculty Internal Medicine PLLCKnoxville, TN · 12 clinicians
Hospital affiliations
- Parkwest Medical CenterKnoxville, TN
- University Health System, IncKnoxville, TN
Other facilities
- University of Tn Medical Center Home Care ServicesHome health agency · Knoxville, TN
Industry payments (Open Payments)
- 2025$181.86 · 10 payments from 7 companies
- 2024$341.19 · 18 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $59.36 | 3 |
| Glaxosmithkline, LLC. | $35.05 | 2 |
| Ars Pharmaceuticals Operations, Inc. | $24.50 | 1 |
| Astrazeneca Pharmaceuticals LP | $17.29 | 1 |
| E.R. Squibb & Sons, L.L.C. | $16.12 | 1 |
What the 2025 payments were for
- Food and Beverage$181.86 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 287 internal medicine physicians in Knoxville · All internal medicine physicians in Tennessee