Usman Hamayoun, MD
NPI 1528695236ActiveIndividual· Hospitalist· Terre Haute, IN
Hospitalist (MD) with Galen Inpatient Physicians PC and 2 other groups, practicing in Terre Haute, Indiana. In 2024 Medicare paid $143,518 for 524 patients, and Part D covered 865 of their prescriptions, 89% of them generic. Pfizer Inc. was the largest of 3 companies reporting payments in 2025, $54.59 in all, mostly food and beverage. Lists HCA Houston Healthcare Kingwood and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1528695236 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 24, 2020 |
| Last updated in NPPES | Jul 10, 2025 |
| Certified by provider | Jul 10, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | 01089288A | IN |
| Internal Medicine | 207R00000X | 01089288A | IN |
| Hospitalist | 208M00000X | 036.173157 | IL |
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 - Hospitalist (IL); Practitioner - Internal Medicine (IN); Practitioner - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 524 |
|---|---|
| Services billed | 1,386 across 12 procedure codes |
| Paid by Medicare | $143,518 |
Part D prescriptions in 2024
| Prescriptions (claims) | 865 · 1,176 30-day fills |
|---|---|
| Patients | 300 |
| Total drug cost | $80,224 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical groups
- Galen Inpatient Physicians PCHanford, CA · 1,077 clinicians
- Hospital Medicine Services of Tx, PLLCLive Oak, TX · 378 clinicians
- Cep America-Illinois Hospitalists, LLPAlton, IL · 196 clinicians
Hospital affiliations
- HCA Houston Healthcare KingwoodKingwood, TX
- Liberty Dayton Regional Medical CenterLiberty, TX
- St Anthonys Memorial HospitalEffingham, IL
- St Johns HospitalSpringfield, IL
- Union Hospital IncTerre Haute, IN
Industry payments (Open Payments)
- 2025$54.59 · 3 payments from 3 companies
- 2024$265.38 · 13 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $25.44 | 1 |
| Paratek Pharmaceuticals, Inc. | $14.69 | 1 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $14.46 | 1 |
What the 2025 payments were for
- Food and Beverage$54.59 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 35 hospitalists in Terre Haute · All hospitalists in Indiana