Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Cardiovascular Disease (Cardiology)

Onyedika J. Ilonze, MD

Works at hospitals in Indianapolis, IN · Indiana

Summary

Onyedika J. Ilonze, MD (Cardiovascular Disease (Cardiology)) is listed by Medicare at 2 hospitals in Indianapolis, IN. NPI 1174752554. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Onyedika J. Ilonze, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Cardiovascular Disease (Cardiology)Primary specialty
YesAccepts Medicare assignment
20Years since medical school (graduated 2006)
MaleGender (as listed)
IU Health Medical Group LLCGroup practice

Quick answers

Which hospitals does Onyedika J. Ilonze work at?
Medicare's official clinician data lists Onyedika J. Ilonze at 2 hospitals: Eskenazi Health and Indiana University Health. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Onyedika J. Ilonze see patients?
Medicare's clinician data lists 1 practice location in Indianapolis, IN. Call before your visit to confirm the address.
What is Onyedika J. Ilonze's specialty?
Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Advanced Heart Failure and Transplant Cardiology and Internal Medicine.
Does Onyedika J. Ilonze accept Medicare assignment?
Yes. Medicare's clinician data says Onyedika J. Ilonze accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Onyedika J. Ilonze?
(888) 484-3258, as listed in official Medicare / NPI Registry data.
What is Onyedika J. Ilonze's NPI number?
1174752554. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Onyedika J. Ilonze works

Medicare's Facility Affiliation Data lists Onyedika J. Ilonze at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Onyedika J. Ilonze is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Onyedika J. Ilonze as a member of this group (CMS data updated 2026-10-02).

  • IU Health Medical Group LLC4,462 clinicians in the group

Specialties

Find other Cardiovascular Disease (Cardiology) doctors in Indiana →

Other cardiologists in Indianapolis

Clinicians with the same Medicare primary specialty in Indianapolis, IN — not a recommendation.

All cardiologists in Indianapolis →

Clinician information

CredentialMD
Graduation year2006
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1174752554
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians