DR. ONYEMAECHI OKOLO-TAKU M.D.
NPI 1609254788
Internal Medicine - Hematology & Oncology in Gilbert, AZ

Q: What is Onyemaechi Okolo-taku's NPI number?

The NPI number for Onyemaechi Okolo-taku is 1609254788. It was assigned to this individual provider in the NPPES registry on May 11, 2015.

Q: What is Onyemaechi Okolo-taku's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Active since May 11, 2015PECOS EnrolledAccepts Medicare Assignment

93.61/100

CMS Quality Rating

3686 S ROME ST, GILBERT, AZ 85297(480) 890-7705 Get Directions Write a Review

NPPES record last updated: November 17, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 17, 2022, Jul 15, 2021, Jun 1, 2021 (3 updates tracked since 2021).

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About Dr. Onyemaechi Okolo-taku M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ONYEMAECHI OKOLO-TAKU M.D. (NPI 1609254788) is an individual hematology & oncology provider in Gilbert, Arizona, licensed in Arizona (57022) and active in the NPI registry since May 2015. She is enrolled in Medicare PECOS and is a graduate of Other (2015).

NPPES Registry Identity

NPI1609254788

Entity TypeIndividualFemale

Primary Taxonomy207RH0003X

Provider Legal NameDR. ONYEMAECHI OKOLO-TAKUCredential: M.D.

Location Address3686 S ROME STGilbert, AZ 85297-7341

Mailing AddressPo Box 6423Chandler, AZ 85246-6423

Phone(480) 890-7705

Sole ProprietorNo

Medical School CMSOtherGraduated 2015

Enumeration DateMay 11, 2015

Last NPPES UpdateNovember 17, 20223 updates tracked since enumeration

NPPES CertifiedNovember 17, 2022

✔ NPI 1609254788 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in AZ · 57022

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

3686 S ROME ST, Gilbert, AZ 85297

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Onyemaechi Okolo-taku M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4284998725

PECOS Enrollment IDI20190312000547

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Onyemaechi Okolo-taku reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ironwood Physicians, PC

7.5 mi

Hematology & Oncology

695 S DOBSON RD
Chandler, AZ 85224

Reassigned Medicare billing, Arizona enrollment
148 clinicians in this Medicare group

NPI 1740269299 (480) 821-2838

Arizona Inpatient Medicine Associates LLC

89 mi

Internal Medicine

7383 E TANQUE VERDE RD
Tucson, AZ 85715

Reassigned Medicare billing, Arizona enrollment
111 clinicians in this Medicare group

NPI 1083647754 (520) 318-3434

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 24

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, ferric carboxymaltose, 1 mg J1439

Ferric carboxymaltose is an iron supplement injection. It's given when your body needs more iron than you can consume through diet, like in anemia. The injection is administered by a healthcare professional into a vein.

30,000 services30 patients

Injection, pembrolizumab, 1 mg J9271

Pembrolizumab is a medication given via injection to help your body's immune system fight certain types of cancer. It's typically administered in a hospital or clinic by a healthcare professional.

8,600 services11 patients

Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml Q9967

Low osmolar contrast material with 300-399 mg/ml iodine concentration is a diagnostic tool used in imaging procedures. It helps to enhance the visibility of specific areas in the body, aiding in accurate diagnosis. It's safe and generally well-tolerated by patients.

5,800 services59 patients

Injection, fosaprepitant, 1 mg J1453

Fosaprepitant is an anti-nausea medication given via injection. It's often used to prevent nausea and vomiting caused by chemotherapy. This injection blocks signals to the brain that trigger these symptoms, helping you feel better.

4,650 services15 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

832 services28 patients

Injection, palonosetron hcl, 25 mcg J2469

Palonosetron HCL is an injection used to prevent nausea and vomiting caused by chemotherapy. It works by blocking a natural substance (serotonin) in the body that can cause vomiting. This helps improve your comfort during cancer treatment.

430 services24 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

342 services185 patients

Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less 96367

This procedure involves injecting fluids or medication directly into your vein. It's used for treatment, prevention, or diagnosis. An additional sequential infusion may be given within an hour if needed. This helps to ensure the medicine is distributed effectively in your body.

137 services33 patients

Administration of chemotherapy into vein, 1 hour or less 96413

Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.

124 services56 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

88 services88 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

78 services43 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

77 services43 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

61 services40 patients

Administration of chemotherapy into vein, each additional hour 96415

Chemotherapy is a treatment method that uses drugs to destroy cancer cells. The drugs are administered into a vein, usually in the arm. Each additional hour of chemotherapy allows for more of the medication to enter your bloodstream to fight against the cancer cells.

48 services18 patients

Injection, diphenhydramine hcl, up to 50 mg J1200

Diphenhydramine HCL injection is a medicine given to alleviate symptoms of allergies, colds, or hay fever. It can also help with motion sickness and certain symptoms of Parkinson's disease. Up to 50 mg may be administered depending on your condition.

44 services17 patients

Ct scan of abdomen and pelvis with contrast 74177

A CT scan of the abdomen and pelvis with contrast is an imaging procedure. A special dye, called contrast, is used to make certain areas more visible. This can help identify issues such as infections, tumors, or other abnormalities. The procedure is painless and usually takes about 30 minutes.

42 services42 patients

Ct scan of chest with contrast 71260

A CT scan of the chest with contrast is an imaging procedure. A special dye (contrast) is used to highlight specific areas in your body, providing clearer pictures of your chest. This helps in diagnosing conditions related to your lungs, heart, and other chest structures.

41 services41 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

33 services28 patients

Injection of additional new drug or substance into vein 96375

This procedure involves introducing a new medication or substance into your bloodstream via a vein. It's typically done using a small needle. The substance can help treat various conditions or assist in diagnostic procedures. It's generally safe and monitored by professionals.

31 services24 patients

Administration of additional new drug or substance into vein, 1 hour or less 96417

This procedure involves introducing a new drug or substance into your vein, typically via an IV drip. It lasts for an hour or less. This method allows the substance to quickly reach your bloodstream, ensuring rapid and effective treatment.

31 services16 patients

Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg J3420

This is a procedure where a small dose of Vitamin B-12, also known as Cyanocobalamin, is injected into your body. This vitamin is essential for nerve function and the production of red blood cells. It's often used to treat vitamin B-12 deficiency.

26 services13 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

23 services23 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

21 services12 patients

Ct scan of chest without contrast 71250

A CT scan of the chest without contrast is a non-invasive imaging procedure. It uses special X-ray equipment to produce detailed images of your chest area, including your lungs and heart. It can help diagnose conditions such as lung diseases or heart disorders. It doesn't involve any dyes or contrast agents.

14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85297 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$168.60 typical visit price

range $55.44 – $168.60

Typical copayment $42.15 (range $13.86 – $42.15)

Most-billed visit code 99205

Established Patient

$98.00 typical visit price

range $17.72 – $137.41

Typical copayment $24.50 (range $4.43 – $34.35)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

93.61/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Quality

97.66

Promoting Interoperability

Improvement Activities

Reported Quality Measures

Advance Care Plan

100%370 patients5/55-star benchmark: 100%

Breast Cancer Screening

71%247 patients4/55-star benchmark: 93%

Closing the Referral Loop: Receipt of Specialist Report

97%77 patients5/55-star benchmark: 87%

Colorectal Cancer Screening

64%544 patients3/55-star benchmark: 88%

Documentation of Current Medications in the Medical Record

92%2,260 patients4/55-star benchmark: 100%

Oncology: Medical and Radiation - Pain Intensity Quantified

95%128 patients4/55-star benchmark: 100%

Preventive Care and Screening: Screening for Depression and Follow-Up Plan

64%928 patients3/55-star benchmark: 97%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Patients combinedPopulations: 94% · 679 patients

Patients screened: 100% · 679 patients

31%55 patients2/55-star benchmark: 100%

Provide Patients Electronic Access to Their Health Information

96%958 patients4/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JENNY LITTRELL ACNP

Nurse Practitioner (Acute Care)