Brian Won-Sik Kim, MD

NPI 1346299831ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Chicago, IL

Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) in Chicago, Illinois, trained at Columbia University College of Physicians and Surgeons (class of 1997). In 2024 Medicare paid $21,639 for 204 patients, and Part D covered 565 of their prescriptions, 54% of them generic. Stryker Corporation was the largest of 2 companies reporting payments in 2025, $70.58 in all, mostly food and beverage.

Overview

NPI	1346299831
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	May 10, 2006
Last updated in NPPES	Dec 11, 2023
Certified by provider	Dec 11, 2023

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Endocrinology, Diabetes & Metabolism Primary	207RE0101X	036-134563	IL

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Nov 10, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026	No match	—
New York OMIG · Nov 11, 2026	No match	—
Ohio Medicaid · Nov 11, 2026	No match	—
Pennsylvania Medicheck · Nov 11, 2026	No match	—
Washington HCA · Nov 11, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Endocrinology (IL)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	204
Services billed	317 across 15 procedure codes
Paid by Medicare	$21,639

Part D prescriptions in 2024

Prescriptions (claims)	565 · 1,558 30-day fills
Patients	209
Total drug cost	$18,546
Generic share	54% of claims

Medicare sources and data years

Education and affiliations

Medical school	Columbia University College of Physicians and Surgeons
Graduation year	1997
Medicare specialty	Endocrinology
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth