Nikiya O. Asamoah-Clark, M.D.
NPI 1336464478ActiveIndividual· Internal Medicine, Gastroenterology· Washington, DC
Internal Medicine, Gastroenterology (M.D.) in Washington, District of Columbia, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 2010). Their prescriptions cost Medicare Part D more than their services did: $831,942 for 332 claims, against $66,131 paid for services in 2024. Janssen Biotech, Inc. was the largest of 6 companies reporting payments in 2025, $807.15 in all, mostly food and beverage.
Overview
| NPI | 1336464478 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 1, 2010 |
| Last updated in NPPES | Sep 15, 2023 |
| Certified by provider | Sep 15, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | MD210001577 | DC |
| Internal Medicine, Gastroenterology | 207RG0100X | 036135318 | 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 - Gastroenterology (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 322 |
|---|---|
| Services billed | 563 across 44 procedure codes |
| Paid by Medicare | $66,131 |
Part D prescriptions in 2024
| Prescriptions (claims) | 332 · 486 30-day fills |
|---|---|
| Patients | 134 |
| Total drug cost | $831,942 |
| Generic share | 61% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 2010 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Medstar Medical Group II LLCWashington, DC · 3,767 clinicians
Hospital affiliations
- Medstar Georgetown University HospitalWashington, DC
- Medstar Washington Hospital CenterWashington, DC
Industry payments (Open Payments)
- 2025$807.15 · 16 payments from 6 companies
- 2024$6,676 · 12 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $459.29 | 5 |
| Abbvie Inc. | $195.50 | 5 |
| Takeda Pharmaceuticals U.S.A., Inc. | $66.30 | 3 |
| Pfizer Inc. | $31.00 | 1 |
| Lilly USA, LLC | $30.30 | 1 |
What the 2025 payments were for
- Food and Beverage$776.15 · 15 payments
- Education$31.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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