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Internal Medicine

Nelson C. Okoh, MD

Works at hospitals in Harrisburg, IL · Marion, IL · Herrin, IL … · Illinois

Summary

Nelson C. Okoh, MD (Internal Medicine) is listed by Medicare at 5 hospitals in Harrisburg, IL, Marion, IL and Herrin, IL and other places. NPI 1346810660. 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 Nelson C. Okoh, 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

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
6Years since medical school (graduated 2020)
MaleGender (as listed)
24 on Physicians PCGroup practice

Quick answers

Which hospitals does Nelson C. Okoh work at?
Medicare's official clinician data lists Nelson C. Okoh at 5 hospitals: Harrisburg Medical Center, Heartland Regional Medical Center, Herrin Hospital, Memorial Hospital of Carbondale and St Joseph Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Nelson C. Okoh 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 Nelson C. Okoh's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Nelson C. Okoh accept Medicare assignment?
Yes. Medicare's clinician data says Nelson C. Okoh 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 Nelson C. Okoh?
(618) 942-2171, as listed in official Medicare / NPI Registry data.
What is Nelson C. Okoh's NPI number?
1346810660. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Nelson C. Okoh works

Medicare's Facility Affiliation Data lists Nelson C. Okoh 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 Nelson C. Okoh is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Nelson C. Okoh as a member of this group (CMS data updated 2026-10-02).

  • 24 on Physicians PC272 clinicians in the group

Specialties

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Herrin

Clinicians with the same Medicare primary specialty in Herrin, IL — not a recommendation.

All internal medicine doctors in Herrin →

Clinician information

CredentialMD
Graduation year2020
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1346810660
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