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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ERGUN ONAL M.D.
NPI 1508804212
Internal Medicine - Critical Care Medicine in Chicago, IL

Active since June 03, 2006
1740 W TAYLOR ST, CHICAGO, IL 60612(312) 996-7699 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Ergun Onal M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ERGUN ONAL M.D. (NPI 1508804212) is an individual critical care medicine provider in Chicago, Illinois and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1508804212
Entity TypeIndividualMale
Primary Taxonomy207RC0200X
Provider Legal NameERGUN ONALCredential: M.D.
Location Address1740 W TAYLOR STChicago, IL 60612-7232
Mailing Address809 S Marshfield Ave, 9th Floor (m/c 732)Chicago, IL 60612-4305 · (312) 996-1000 · Fax (312) 996-1001
Phone(312) 996-7699
Sole ProprietorNo
Enumeration DateJune 3, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1508804212 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RC0200X
Definition
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
1740 W TAYLOR ST, Chicago, IL 60612
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. CATHLEEN CONWAY JENSEN OTR/L
Occupational Therapist
1740 W TAYLOR ST, C100
CHICAGO, IL 60612
Cook County (312) 996-3700
KELLY M HOYERT PA-C
Physician Assistant (Surgical)
1740 W TAYLOR ST, 3F OCC
CHICAGO, IL 60612
Cook County (312) 355-4300
DR. YI-LOONG COLIN WOON M.D.
Orthopaedic Surgery (Adult Reconstructive Orthopaedic Surgery)
1740 W TAYLOR ST
CHICAGO, IL 60612
Cook County (866) 600-2273
VIDHI SRIVASTAVA MD
Anesthesiology
1740 W TAYLOR ST
CHICAGO, IL 60612
Cook County (866) 600-2273
AMY PHAM D.O.
Pediatrics (Neonatal-Perinatal Medicine)
1740 W TAYLOR ST
CHICAGO, IL 60612
Cook County (866) 600-2273
WILSON CHING M.D.
Family Medicine
1740 W TAYLOR ST
CHICAGO, IL 60612
Cook County (866) 600-2273
ADRIENNE BERMAN MD
Ophthalmology
1740 W TAYLOR ST
CHICAGO, IL 60612
Cook County (866) 600-2273
JOSEPH S COLLA M.D.
Emergency Medicine
1740 W TAYLOR ST
CHICAGO, IL 60612
Cook County (312) 996-8177

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ergun Onal's NPI number?

The NPI number for Ergun Onal is 1508804212. It was assigned to this individual provider in the NPPES registry on June 3, 2006.

Where is Ergun Onal located?

Ergun Onal practices at 1740 W Taylor St, Chicago, IL 60612. The listed phone number is (312) 996-7699.

What is Ergun Onal's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

When was this NPI record last updated?

The NPPES record for Ergun Onal was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.