Ismanie Guillaume, M.D.
NPI 1326571126ActiveIndividual· Internal Medicine· Newark, DE
Internal Medicine (M.D.) in Newark, Delaware, trained at George Washington University School of Medicine (class of 2017). 336 Medicare patients in 2024, $49,961 paid; nearly all of their 231 Part D prescriptions were generic (94%).
Overview
| NPI | 1326571126 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 7, 2017 |
| Last updated in NPPES | Jun 25, 2021 |
| Certified by provider | Jun 25, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | C1-0024308 | DE |
| Pediatrics | 208000000X | C1-0024308 | DE |
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 (DE); Practitioner - Internal Medicine (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 336 |
|---|---|
| Services billed | 764 across 12 procedure codes |
| Paid by Medicare | $49,961 |
Part D prescriptions in 2024
| Prescriptions (claims) | 231 · 275 30-day fills |
|---|---|
| Patients | 106 |
| Total drug cost | $12,089 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | George Washington University School of Medicine |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Internal Medicine |
Medical groups
- Christiana Care Health Services IncNewark, DE · 1,483 clinicians
- Union Hospital of Cecil CountyElkton, MD · 288 clinicians
Hospital affiliations
- Christiana HospitalNewark, DE
- Union Hospital of Cecil CountyElkton, MD
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Newark
- 1033672886
- 1043890007
- 1053448431
- 1104085539
- 1144857277
- 1154450906
- 1174082432
- 1235172966
- 1255996682
- 1265563571
- 1265791313
- 1316197098
All 267 internal medicine physicians in Newark · All internal medicine physicians in Delaware