Ishmael A. Jaiyesimi, D.O.
NPI 1538128178ActiveIndividual· Internal Medicine, Hematology & Oncology· Royal Oak, MI
Internal Medicine, Hematology & Oncology (D.O.) with Beaumont Medical Group- Specialty Services and 1 other group, practicing in Royal Oak, Michigan. Their prescriptions cost Medicare Part D more than their services did: $7,307,832 for 1,340 claims, against $3,659,778 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 13 companies reporting payments in 2025, $1,846 in all, mostly device and supply loans. Lists Beaumont Hospital - Dearborn and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1538128178 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Mar 22, 2006 |
| Last updated in NPPES | Aug 27, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 5101009654 | MI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 669 |
|---|---|
| Services billed | 259,662 across 137 procedure codes |
| Paid by Medicare | $3,659,778 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,340 · 1,925 30-day fills |
|---|---|
| Patients | 249 |
| Total drug cost | $7,307,832 |
| Generic share | 60% of claims |
Education and affiliations
| Graduation year | 1986 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical groups
- Beaumont Medical Group- Specialty ServicesBerkley, MI · 847 clinicians
- Michigan Healthcare Professionals PCClarkston, MI · 529 clinicians
Hospital affiliations
- Beaumont Hospital - DearbornDearborn, MI
- Beaumont Hospital - Farmington HillsFarmington Hills, MI
- Beaumont Hospital - Grosse PointeGrosse Pointe, MI
- Beaumont Hospital Royal OakRoyal Oak, MI
- Beaumont Hospital, TroyTroy, MI
Industry payments (Open Payments)
- 2025$1,846 · 42 payments from 13 companies
- 2024$2,097 · 46 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $1,165 | 22 |
| Merck Sharp & Dohme LLC | $170.63 | 2 |
| Janssen Biotech, Inc. | $124.74 | 1 |
| Astellas Pharma US Inc | $68.51 | 3 |
| Glaxosmithkline, LLC. | $64.33 | 3 |
What the 2025 payments were for
- Long term medical supply or device loan$999.96 · 12 payments
- Food and Beverage$846.50 · 30 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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