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DR. LEON GUSSOW M.D.
NPI 1265585863
Internal Medicine in Chicago, IL

Active since January 19, 2007
1740 W TAYLOR ST, DEPT 3466, CHICAGO, IL 60612(312) 704-2885(312) 704-2737 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Leon Gussow M.d. NPPES

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

DR. LEON GUSSOW M.D. (NPI 1265585863) is an individual internal medicine provider in Chicago, Illinois and active in the NPI registry since January 2007.

NPPES Registry Identity

NPI1265585863
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. LEON GUSSOWCredential: M.D.
Location Address1740 W TAYLOR ST, DEPT 3466Chicago, IL 60612-7232
Mailing Address710 W Buena Ave, # 2wChicago, IL 60613-2222 · (773) 935-3746 · Fax (773) 935-3746
Phone(312) 704-2885
Fax(312) 704-2737
Sole ProprietorNo
Enumeration DateJanuary 19, 2007
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1265585863 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedEmergency MedicineTaxonomy 207P00000X
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 Leon Gussow's NPI number?

The NPI number for Leon Gussow is 1265585863. It was assigned to this individual provider in the NPPES registry on January 19, 2007.

Where is Leon Gussow located?

Leon Gussow practices at 1740 W Taylor St Dept 3466, Chicago, IL 60612. The listed phone number is (312) 704-2885.

What is Leon Gussow's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Leon Gussow was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.