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Emergency Medicine

Oluwaranti A. Ositelu, MD

Works at hospitals in Downers Grove, IL · Illinois

Summary

Dr. Oluwaranti A. Ositelu, MD is an emergency medicine doctor at 15900 W 127th St, Lemont, IL 60439. Phone: (630) 243-7100. Accepts Medicare assignment. In 2024, Oluwaranti A. Ositelu had 621 Original Medicare patients and 769 services. NPI 1235621772. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 15900 W 127th St, Lemont, IL 60439 · Directions (2 more locations)
  • Phone: (630) 243‑7100
  • Medicare: Accepts Medicare assignment
  • Hospital: Advocate Good Samaritan Hospital
  • Group practice: Dupage Emergency Physicians Convenient Care LLC (+1 more)
  • Medical school: Indiana University School Of Medicine · graduated 2018 (8 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Oluwaranti A. Ositelu, 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 Oluwaranti A. Ositelu accept Medicare assignment?
Yes. Medicare's clinician data says Oluwaranti A. Ositelu 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 Oluwaranti A. Ositelu see?
In 2024, CMS data shows 621 Original Medicare patients and 769 services for Oluwaranti A. Ositelu. This counts Original Medicare only and measures volume, not quality.
What is Oluwaranti A. Ositelu's NPI number?
1235621772. 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 Oluwaranti A. Ositelu, 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 patients621
Services billed to Medicare769
Different services or procedures31
Participating Medicare providerYes
Average age of these patients78

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)504 services
  2. Emergency department visit with moderate level of medical decision making (99284)102 services
  3. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)60 services
  4. Critical care, first 30-74 minutes (99291)53 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%
  • Arthritis59%
  • Ischemic heart disease46%
  • Chronic kidney disease45%
  • Heart failure43%

Hospitals where Oluwaranti A. Ositelu works

Medicare's Facility Affiliation Data lists Oluwaranti A. Ositelu 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.

  • Advocate Good Samaritan HospitalDowners Grove, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140288

Practice locations

Addresses where Oluwaranti A. Ositelu is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Oluwaranti A. Ositelu as a member of these groups (CMS data updated October 2, 2026).

  • Dupage Emergency Physicians Convenient Care LLC29 clinicians in the group
  • Dupage Emergency Physicians Ltd26 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Illinois →

Other emergency medicine doctors in Lemont

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

All emergency medicine doctors in Lemont →

Other clinicians in Dupage Emergency Physicians Convenient Care LLC

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

Clinician information

CredentialMD
Medical schoolIndiana University School Of Medicine
Graduation year2018 (8 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1235621772
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. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians