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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. REBECCA LYNN BROWN M.D.
NPI 1336193671
Internal Medicine - Endocrinology, Diabetes & Metabolism in Chicago, IL

Active since May 20, 2006
5841 S MARYLAND AVE, MC1027, CHICAGO, IL 60637(773) 702-1000 Get Directions Write a Review

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

About Dr. Rebecca Lynn Brown M.d. NPPES

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

DR. REBECCA LYNN BROWN M.D. (NPI 1336193671) is an individual endocrinology, diabetes & metabolism provider in Chicago, Illinois and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1336193671
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameDR. REBECCA LYNN BROWNCredential: M.D.
Location Address5841 S MARYLAND AVE, MC1027Chicago, IL 60637-1447
Mailing Address5841 S Maryland Ave, Mc1027Chicago, IL 60637-1447 · (773) 702-1000
Phone(773) 702-1000
Sole ProprietorNo
Enumeration DateMay 20, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1336193671 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
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 Rebecca Brown's NPI number?

The NPI number for Rebecca Brown is 1336193671. It was assigned to this individual provider in the NPPES registry on May 20, 2006.

Where is Rebecca Brown located?

Rebecca Brown practices at 5841 S Maryland Ave Mc1027, Chicago, IL 60637. The listed phone number is (773) 702-1000.

What is Rebecca Brown's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

When was this NPI record last updated?

The NPPES record for Rebecca Brown 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 24 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.