Onyemaechi Okolo-Taku, M.D.
NPI 1609254788ActiveIndividual· Internal Medicine, Hematology & Oncology· Gilbert, AZ
Internal Medicine, Hematology & Oncology (M.D.) with Ironwood Physicians PC, practicing in Gilbert, Arizona. In 2024 Medicare paid $1,078,243 for 415 patients, and Part D covered 478 of their prescriptions, 67% of them generic. Astrazeneca Pharmaceuticals LP was the largest of 25 companies reporting payments in 2025, $1,884 in all, mostly food and beverage. Lists Banner Baywood Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1609254788 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 11, 2015 |
| Last updated in NPPES | Nov 17, 2022 |
| Certified by provider | Nov 17, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 57022 | AZ |
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 - Hematology/Oncology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 415 |
|---|---|
| Services billed | 81,215 across 122 procedure codes |
| Paid by Medicare | $1,078,243 |
Part D prescriptions in 2024
| Prescriptions (claims) | 478 · 637 30-day fills |
|---|---|
| Patients | 107 |
| Total drug cost | $957,229 |
| Generic share | 67% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Ironwood Physicians PCChandler, AZ · 116 clinicians
Hospital affiliations
- Banner Baywood Medical CenterMesa, AZ
- Chandler Regional Medical CenterChandler, AZ
- Mercy Gilbert Medical CenterGilbert, AZ
Industry payments (Open Payments)
- 2025$1,884 · 74 payments from 25 companies
- 2024$1,535 · 76 payments from 23 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $282.92 | 11 |
| Biocon Biologics Inc | $279.57 | 1 |
| Abbvie Inc. | $146.29 | 10 |
| Celgene Corporation | $144.91 | 9 |
| Glaxosmithkline, LLC. | $110.82 | 5 |
What the 2025 payments were for
- Food and Beverage$1,841 · 73 payments
- Education$43.25 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other hematologist-oncologists in Gilbert
- 1013279256
- 1043477441
- 1124433198
- 1275704892
- 1285167080
- 1285814509
- 1306335047
- 1356531859
- 1366586521
- 1396911939
- 1437437373
- 1497933303
All 27 hematologist-oncologists in Gilbert · All hematologist-oncologists in Arizona