Niaz Usman, M.D.
NPI 1588639777ActiveIndividual· Internal Medicine, Gastroenterology· Beavercreek, OH
Internal Medicine, Gastroenterology (M.D.) with Adena Medical Group LLC and 1 other group, practicing in Beavercreek, Ohio. Their prescriptions cost Medicare Part D more than their services did: $556,865 for 1,615 claims, against $168,268 paid for services in 2024. Abbvie Inc. was the largest of 7 companies reporting payments in 2025, $394.60 in all, mostly food and beverage. Lists Adena Regional Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1588639777 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 21, 2006 |
| Last updated in NPPES | Feb 9, 2026 |
| Certified by provider | Feb 9, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 35066544 | OH |
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 - Gastroenterology (KY); Practitioner - Gastroenterology (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 548 |
|---|---|
| Services billed | 5,014 across 59 procedure codes |
| Paid by Medicare | $168,268 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,615 · 2,798 30-day fills |
|---|---|
| Patients | 590 |
| Total drug cost | $556,865 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 1989 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical groups
- Adena Medical Group LLCChillicothe, OH · 386 clinicians
- Dayton Gastroenterology, LLCDayton, OH · 74 clinicians
Hospital affiliations
- Adena Regional Medical CenterChillicothe, OH
- Kettering Health DaytonDayton, OH
- Kettering Health Main CampusKettering, OH
- Miami Valley HospitalDayton, OH
- Soin Medical CenterBeaver Creek, OH
Industry payments (Open Payments)
- 2025$394.60 · 15 payments from 7 companies
- 2024$336.57 · 17 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $262.17 | 8 |
| Lilly USA, LLC | $31.64 | 2 |
| Pfizer Inc. | $24.43 | 1 |
| Ardelyx, Inc. | $24.21 | 1 |
| Qol Medical, LLC | $19.47 | 1 |
What the 2025 payments were for
- Food and Beverage$394.60 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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