Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Zainab Raji Osobu, MD

Individual provider Emergency Medicine Physician · NPI 1720432081

Zainab Raji Osobu, MD practises Emergency Medicine in Naperville, Illinois. Graduated from Loyola University of Chicago, Stritch School of Medicine in 2016, 10 years ago. Practices with Edward Hospital, a 98-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
10
Trained at
Loyola University of Chicago, Stritch School of Medicine
Licensed in
IL
In the registry since
2016
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

801 S Washington St
Naperville, IL 60540-7430
Phone: (630) 527-3000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3 Erie Ct, Oak Park, IL 60302-2519 — (240) 686-2300

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 036.150018 (IL)

Record details

NPI number1720432081
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 22, 2016
Last updated in NPPESNovember 19, 2025
Certification dateNovember 19, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolLOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Graduated 2016 (10 years in practice)
Group practice Edward Hospital — 98 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients492
Services billed 755 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Edward Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 98 clinicians in the practice; 12 are shown here.

Other providers in Naperville