Onyemaechi Okolo-Taku, M.D.
Hematology & Oncology Physician · Gilbert, AZ
Onyemaechi Okolo-Taku, M.D. is a hematology & oncology physician with a practice address in Gilbert, Arizona, and NPI 1609254788, issued on May 11, 2015. Check the license (Arizona 57022, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Onyemaechi Okolo-Taku
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 57022 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 3686 S Rome St, Gilbert, AZ 85297
- Phone
- (480) 890-7705
- Enumerated
- May 11, 2015
- Record last updated
- Nov 17, 2022
- Medicare enrollment
- Enrolled (PECOS I20190312000547); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 285 in Arizona → Look up another NPI →
Also registered at 3686 S Rome St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kara Biber, RDRegistered Dietitian1710501200
- Carrie Cashman, M.D.Surgery Physician1649234550
- Joshua Hamilton, MDSurgery Physician1487850582
- Kasey Huey, FNPFamily Nurse Practitioner1013574185
- Jenny Littrell, ACNPAcute Care Nurse Practitioner1013316025
- Kalyan Mantripragada, MDHematology & Oncology Physician1396911939
Verify Onyemaechi Okolo-Taku in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 57022Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
478 Medicare Part D claims for 107 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims. 41 claims were for opioids.
Most prescribed
- Eliquis78 claims
- Brukinsa29 claims
- Acyclovir26 claims
- Prednisone26 claims
- Sulfamethoxazole-Trimethoprim22 claims
- Ondansetron Odt20 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 93.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,534.61
76 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Ironwood Physicians PCGilbert, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Onyemaechi Okolo-Taku among 285 hematology & oncology physician records in Arizona
Onyemaechi Okolo-Taku, M.D. is one of 285 hematology & oncology physician records with a practice address in Arizona. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 83% of them.
- NPI issued2015 · 83% of these records are older, 15% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2015 · median 2003 among the 229 with a school on file
- Record last updated2022 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Arizona
There are 285 hematology & oncology physician records in Arizona.
All 285 in Arizona → Every provider in Gilbert → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Alex Liu, MDGilbert, AZ 852971306335047
- Kalyan Mantripragada, MDGilbert, AZ 852971396911939
- Puneet Raman, MDGilbert, AZ 852971659909612
- Sumana Veeravelli, MDGilbert, AZ 852971568951788
- Rajesh Bagai, MDGlendale, AZ 853061306866736
- Andrei BalandinGlendale, AZ 853061427225986
- Elisa Bomgaars, MDGlendale, AZ 853061841220225
- Joseph Nabong, MDGlendale, AZ 853061184698805
Common questions
What is Onyemaechi Okolo-Taku, M.D.'s NPI number?
Onyemaechi Okolo-Taku, M.D.'s National Provider Identifier (NPI) is 1609254788, issued on May 11, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Onyemaechi Okolo-Taku, M.D. located?
The NPPES record lists a practice address at 3686 S Rome St, Gilbert, AZ, 85297. Phone: (480) 890-7705. Providers update this record themselves, so call before visiting.
How can I verify Onyemaechi Okolo-Taku, M.D.'s license?
NPPES lists Arizona license number 57022, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Onyemaechi Okolo-Taku, M.D. prescribe under Medicare Part D?
In 2024, Onyemaechi Okolo-Taku, M.D. had 478 Medicare Part D claims for 107 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Onyemaechi Okolo-Taku, M.D.'s MIPS final score?
The 2023 MIPS final score is 93.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.