Yun Ju Kim, MD

Medicare activity in 2024

Official CMS public-use data for Yun Ju Kim, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)105 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)41 services
3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)36 services
4. Biopsy of large bowel using a flexible endoscope (45380)34 services
5. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)29 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High cholesterol74%
• High blood pressure70%
• Arthritis52%
• Ischemic heart disease36%
• Diabetes29%
• Chronic kidney disease25%

Hospitals where Yun Ju Kim works

Medicare's Facility Affiliation Data lists Yun Ju Kim at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Rush Oak Park HospitalOak Park, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140063
• Rush University Medical CenterChicago, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140119

Practice locations

Addresses where Yun Ju Kim is enrolled with Medicare (CMS data updated October 2, 2026).

• 2011 York Rd, Suite 1300Oak Brook, IL 60523 (630) 724‑1300

Group practices

Medicare enrollment lists Yun Ju Kim as a member of this group (CMS data updated October 2, 2026).

• Rush University Medical Group1,551 clinicians in the group

Specialties

• Gastroenterologyprimary

Find other Gastroenterology doctors in Illinois →

Other gastroenterologists in Oak Brook

Clinicians with the same Medicare primary specialty in Oak Brook, IL — not a recommendation.

• Laura H. Yun, MD
• Christopher M. Moore, MD
• Vijaya L. Rao, MD
• Amrita Sethi, MD

All gastroenterologists in Oak Brook →

Other clinicians in Rush University Medical Group

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Karen E. Jackson, MD
• Yasmin Asvat
• Vidya S. Mandiyan, MD
• Pierpaolo Turcano, MD
• Kevin P. Cavanaugh, MD
• Tommy Y. Pacana, MD

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians