Quick answers
- Which hospitals does Amaka Onyiagu work at?
- Medicare's official clinician data lists Amaka Onyiagu at 2 hospitals: Herrin Hospital and Memorial Hospital of Carbondale. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Amaka Onyiagu see patients?
- Medicare's clinician data lists 2 practice locations, including Herrin, IL and Carbondale, IL. Call before your visit to confirm the address.
- What is Amaka Onyiagu's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Amaka Onyiagu accept Medicare assignment?
- Yes. Medicare's clinician data says Amaka Onyiagu 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 Amaka Onyiagu?
- (618) 942-2171, as listed in official Medicare / NPI Registry data.
- What is Amaka Onyiagu's NPI number?
- 1386263283. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Amaka Onyiagu works
Medicare's Facility Affiliation Data lists Amaka Onyiagu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Herrin HospitalHerrin, IL · Acute Care Hospital · CCN 140011
- Memorial Hospital of CarbondaleCarbondale, IL · Acute Care Hospital · CCN 140164
Practice locations
Addresses where Amaka Onyiagu is enrolled with Medicare (CMS data updated 2026-10-02).
- 201 S 14th StHerrin, IL 62948 (618) 942‑2171
- 405 W Jackson StCarbondale, IL 62901 (618) 549‑0721
Group practices
Medicare enrollment lists Amaka Onyiagu as a member of this group (CMS data updated 2026-10-02).
- 24 on Physicians PC272 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Herrin
Clinicians with the same Medicare primary specialty in Herrin, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386263283 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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