Onyemaechi Okolo-Taku, M.D.
NPI 1609254788 · Hematology & Oncology Physician · Gilbert, AZ
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Onyemaechi Okolo-Taku, M.D. is a Hematology & Oncology Physician provider in Gilbert, AZ (NPI 1609254788).
Provider details
- NPI number
- 1609254788
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 57022 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,191 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 342 | $89 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Additional Sequential Infusion, 1 Hour Or Less96367 | 137 | $27 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 124 | $126 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 88 | $109 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 78 | $14 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 78 | 16 |
| Zanubrutinibbrand: Brukinsa | 29 | — |
| Prednisone | 26 | — |
| Acyclovir | 26 | — |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 22 | — |
| Ondansetronbrand: Ondansetron Odt | 20 | 15 |
| Exemestane | 19 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,535 across 76 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-05-11
- Last updated
- 2022-11-17
- Certified
- 2022-11-17
Frequently asked questions
- What is Onyemaechi Okolo-Taku's NPI number?
- Onyemaechi Okolo-Taku's National Provider Identifier (NPI) is 1609254788, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Onyemaechi Okolo-Taku's specialty?
- Onyemaechi Okolo-Taku is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Onyemaechi Okolo-Taku located?
- Onyemaechi Okolo-Taku's practice location on file with NPPES is 3686 S Rome St, Gilbert, AZ 85297-7341.
- What is Onyemaechi Okolo-Taku's phone number?
- The practice phone number listed in the NPPES registry for Onyemaechi Okolo-Taku is (480) 890-7705.
- Does Onyemaechi Okolo-Taku accept Medicare?
- Onyemaechi Okolo-Taku is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Onyemaechi Okolo-Taku's NPI active?
- Yes — Onyemaechi Okolo-Taku's NPI (1609254788) is active in the NPPES registry as of the last update on 2022-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.