Trest Alan Underwood, DO
NPI 1780259911ActiveIndividual· Internal Medicine· Tupelo, MS
Internal Medicine (DO) in Tupelo, Mississippi, licensed in MS, with an NPI issued in May 2021. Their prescriptions cost Medicare Part D more than their services did: $59,357 for 520 claims, against $2,230 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 8 companies reporting payments in 2025, $732.73 in all, mostly food and beverage.
Overview
| NPI | 1780259911 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | May 20, 2021 |
| Last updated in NPPES | Oct 18, 2021 |
| Certified by provider | Oct 18, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | T-4377 | MS |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | MS |
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 (MS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 28 |
|---|---|
| Services billed | 36 across 5 procedure codes |
| Paid by Medicare | $2,230 |
Part D prescriptions in 2024
| Prescriptions (claims) | 520 · 1,185 30-day fills |
|---|---|
| Patients | 134 |
| Total drug cost | $59,357 |
| Generic share | 85% of claims |
Industry payments (Open Payments)
- 2025$732.73 · 26 payments from 8 companies
- 2024$442.63 · 15 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $177.82 | 4 |
| Pfizer Inc. | $165.73 | 9 |
| Genzyme Corporation | $147.72 | 3 |
| Astrazeneca Pharmaceuticals LP | $146.23 | 5 |
| Mallinckrodt Hospital Products Inc. | $41.48 | 2 |
What the 2025 payments were for
- Food and Beverage$732.73 · 26 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 67 internal medicine physicians in Tupelo · All internal medicine physicians in Mississippi