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Internal Medicine

Olufemi Osikoya, MD

Works at hospitals in Belleville, IL · Illinois

Summary

Dr. Olufemi Osikoya, MD is an internal medicine doctor at 4500 Memorial Dr, Belleville, IL 62226. Phone: (618) 257-6220. Accepts Medicare assignment. NPI 1619557774. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 4500 Memorial Dr, Belleville, IL 62226 · Directions
  • Phone: (618) 257‑6220
  • Medicare: Accepts Medicare assignment
  • Hospital: Memorial Hospital
  • Group practice: Fairview Heights Medical Group SC
  • Medical school: graduated 2021 (5 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Olufemi Osikoya, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Olufemi Osikoya accept Medicare assignment?
Yes. Medicare's clinician data says Olufemi Osikoya 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.
What is Olufemi Osikoya's NPI number?
1619557774. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Olufemi Osikoya works

Medicare's Facility Affiliation Data lists Olufemi Osikoya 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.

  • Memorial HospitalBelleville, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140185

Practice locations

Addresses where Olufemi Osikoya is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Olufemi Osikoya as a member of this group (CMS data updated October 2, 2026).

  • Fairview Heights Medical Group SC444 clinicians in the group

Specialties

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Belleville

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

All internal medicine doctors in Belleville →

Other clinicians in Fairview Heights Medical Group SC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2021 (5 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1619557774
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians