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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.

DR. ADRIAN DIAZ
NPI 1740714377
Surgery - Surgical Oncology in Chicago, IL

Active since April 20, 2017
5841 S MARYLAND AVE, CHICAGO, IL 60637(614) 293-4063 Get Directions Write a Review

NPPES record last updated: August 11, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Aug 11, 2026, Jul 30, 2024, Apr 20, 2017 (3 updates tracked since 2017).

About Dr. Adrian Diaz NPPES

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

DR. ADRIAN DIAZ (NPI 1740714377) is an individual surgical oncology provider in Chicago, Illinois, licensed in Illinois (036.168606) and active in the NPI registry since April 2017.

NPPES Registry Identity

NPI1740714377
Entity TypeIndividualMale
Primary Taxonomy2086X0206X
Provider Legal NameDR. ADRIAN DIAZ
Location Address5841 S MARYLAND AVEChicago, IL 60637-1443
Mailing Address150 Harvester Dr Ste 300Burr Ridge, IL 60527-5965 · (773) 702-1150
Phone(614) 293-4063
Sole ProprietorNo
Enumeration DateApril 20, 2017
Last NPPES UpdateAugust 11, 20263 updates tracked since enumeration
NPPES CertifiedAugust 11, 2026
✔ NPI 1740714377 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgery · Surgical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2086X0206X
License✔ Licensed in IL · 036.168606
Definition
A surgical oncologist is a well-qualified surgeon who has obtained additional training and experience in the multidisciplinary approach to the prevention, diagnosis, treatment, and rehabilitation of cancer patients, and devotes a major portion of his or her professional practice to these activities and cancer research.
5841 S MARYLAND AVE, Chicago, IL 60637
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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.

DR. DON MARTINEZ M.D.
Radiology (Diagnostic Radiology)
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (773) 926-8318
ALEXANDRA DUMITRESCU
Internal Medicine
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (888) 824-0200
PELEG HOROWITZ
Neurological Surgery
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (888) 824-0200
SANDEEP GURBUXANI
Pathology (Hematology)
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (888) 824-0200
DR. NIREN GANDRA M.D.
Internal Medicine
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (773) 702-0240
ALLIE DAKROUB MD MS
Internal Medicine
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (773) 702-1000
SCOTT VASHER MD
Internal Medicine (Pulmonary Disease)
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (773) 702-1000
DR. NATHAN CHARLES NOWALK M.D.
Internal Medicine (Pulmonary Disease)
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (888) 824-0200

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 Adrian Diaz's NPI number?

The NPI number for Adrian Diaz is 1740714377. It was assigned to this individual provider in the NPPES registry on April 20, 2017.

Where is Adrian Diaz located?

Adrian Diaz practices at 5841 S Maryland Ave, Chicago, IL 60637. The listed phone number is (614) 293-4063.

What is Adrian Diaz's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Surgical Oncology, with taxonomy code 2086X0206X.

When was this NPI record last updated?

The NPPES record for Adrian Diaz was last updated on August 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.