Bryan Arden Walker, MD
NPI 1144727959ActiveIndividual· Internal Medicine, Infectious Disease· Knoxville, TN
Internal Medicine, Infectious Disease (MD) in Knoxville, Tennessee, trained at George Washington University School of Medicine (class of 2018). Their prescriptions cost Medicare Part D more than their services did: $315,696 for 498 claims, against $32,627 paid for services in 2024. Gilead Sciences, Inc. was the largest of 10 companies reporting payments in 2025, $851.48 in all, mostly food and beverage.
Overview
| NPI | 1144727959 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 9, 2018 |
| Last updated in NPPES | Dec 14, 2023 |
| Certified by provider | Dec 14, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 68493 | TN |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Infectious Disease (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 111 |
|---|---|
| Services billed | 411 across 12 procedure codes |
| Paid by Medicare | $32,627 |
Part D prescriptions in 2024
| Prescriptions (claims) | 498 · 581 30-day fills |
|---|---|
| Patients | 117 |
| Total drug cost | $315,696 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | George Washington University School of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Infectious Disease |
| Telehealth | Offers telehealth |
Medical group
- University Health System, Inc.Knoxville, TN · 522 clinicians
Hospital affiliations
- Blount Memorial HospitalMaryville, TN
- University Health System, IncKnoxville, TN
Industry payments (Open Payments)
- 2025$851.48 · 43 payments from 10 companies
- 2024$918.99 · 34 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $160.46 | 6 |
| Cumberland Pharmaceuticals, Inc. | $147.68 | 13 |
| Shionogi Inc | $136.54 | 8 |
| Insmed, Inc. | $97.50 | 4 |
| Merck Sharp & Dohme LLC | $91.99 | 3 |
What the 2025 payments were for
- Food and Beverage$802.43 · 32 payments
- Education$49.05 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 15 infectious disease specialists in Knoxville · All infectious disease specialists in Tennessee