Quick answers
- Does Afiachukwu G. Onuegbu accept Medicare assignment?
- Yes. Medicare's clinician data says Afiachukwu G. Onuegbu accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Afiachukwu G. Onuegbu see?
- In 2024, CMS data shows 1,507 Original Medicare patients and 2,474 services for Afiachukwu G. Onuegbu. This counts Original Medicare only and measures volume, not quality.
- What is Afiachukwu G. Onuegbu's NPI number?
- 1144669383. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Afiachukwu G. Onuegbu, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 1,507 |
|---|---|
| Services billed to Medicare | 2,474 |
| Different services or procedures | 29 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)659 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician (93016)200 services
- Ct scan of blood vessels and grafts of heart with contrast (75574)191 services
- Ultrasound of heart with color-depicted blood flow, rate and valve function (93325)173 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician (93018)143 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Arthritis57%
- Atrial fibrillation50%
- Heart failure46%
Hospitals where Afiachukwu G. Onuegbu works
Medicare's Facility Affiliation Data lists Afiachukwu G. Onuegbu at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Good Samaritan Hospital Medical CenterWest Islip, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330286
- Mercy Medical CenterRockville Centre, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330259
- St Catherine of Siena HospitalSmithtown, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330401
- St Charles HospitalPort Jefferson, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330246
- St Francis Hospital - The Heart CenterRoslyn, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330182
Practice locations
Addresses where Afiachukwu G. Onuegbu is enrolled with Medicare (CMS data updated October 2, 2026).
- 2200 Northern Blvd, 100c St Francis DiagnosticGreenvale, NY 11548 (516) 325‑7400
- 2200 Northern Blvd, Suite 132Greenvale, NY 11548 (516) 626‑0700
Group practices
Medicare enrollment lists Afiachukwu G. Onuegbu as a member of these groups (CMS data updated October 2, 2026).
- CHS Physician Partners PC743 clinicians in the group
- St Francis Cardiac Prevention Services PC62 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in New York →
Other cardiologists in Greenvale
Clinicians with the same Medicare primary specialty in Greenvale, NY — not a recommendation.
Other clinicians in CHS Physician Partners PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2007 (19 years since medical school) |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1144669383 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians