Summary

Dr. Jah-Won Koo is an internal medicine physician who has been caring for patients for over three decades. He earned his medical degree from the University of Cincinnati College of Medicine and completed his residency at McGaw Medical Center of Northwestern University in 1998. Dr. Koo speaks both English and Spanish, helping him connect with a diverse patient population.

Dr. Koo practices at Northwestern Memorial Hospital and sees patients in Chicago, Illinois. He focuses on treating serious kidney conditions, including chronic kidney disease and advanced kidney disease requiring specialized care. His expertise also extends to managing heart failure and other complex internal medicine conditions. Dr. Koo regularly performs blood tests and arterial blood gas analysis to monitor his patients' health. Patients have given him an average rating of 4.9 out of 5, reflecting their confidence in his compassionate care.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.9
  • 31 years of experience
  • 21 insurance plans accepted
  • speaks English, Spanish
  • McGaw Medical Center of Northwestern University
  • 1 written review
  • 1 specialty
  • 10 areas of expertise
  • 1 hospital affiliation
  • 1 office location
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Location

Northwestern Medical Group - South Clark

20 S Clark St 11th FlChicago, IL 60603

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Jah-Won Koo, MDDr. Ramesh Aggarwal, MDDr. Gretel Ruiz-Jorge, MDDr. Megan J. Romine, DO
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients
4.9 
3.8 
3.3 
4.5 
31 Years of Experience 17 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish Speaks English, Hindi Speaks English, Spanish Speaks English
Chicago , ILBellwood , ILChicago , ILDes Moines , IA
Med School: University of Cincinnati College of Medicine Med School: Pt.Bd.Sharma Pgims , Rohtak Med School: Des Moines University College Of Osteopathic Medicine
Current Profile
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Insurance Plans Accepted by Jah-Won Koo

  • Aetna
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield - PPO
  • Blue Cross Blue Shield of Illinois
  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield of Texas
  • CareFirst Blue Cross Blue Shield
  • CareFirst Blue Cross Blue Shield - PPO
  • Cigna
  • Cigna - PPO
  • Humana
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • Meritain Health
  • Optum Health
  • UnitedHealthcare
  • UnitedHealthcare - Medicare
  • UnitedHealthcare - Medicare (Advantage HMO)

Medical Specialties

Jah-Won Koo has the following specialty

Specialty Expertise

Jah-Won Koo has the following 10 areas of expertise

  • Asthma
  • Check-up
  • Diabetes
  • Heartburn
  • Immunization
  • Physical
  • Preventive Medicine
  • Vaccination
  • Weight Loss
  • Weight Loss (non-surgical)

Certifications, License, & Education

31 Years Experience

Jah-Won Koo holds an expired medical license in the state of Illinois.

Medical License

Medical Doctor with an expired medical license in the state of Illinois that expired in 2026.

Education & Training

Residency

Completed their residency at McGaw Medical Center of Northwestern University in 1998.

Medical School

Graduated from University of Cincinnati College of Medicine in 1995.

NPI Number

Jah-Won Koo's NPI number is 1235241837.

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Frequently Asked Questions

Does Jah-Won Koo accept my insurance?
You can see the insurance plans that Jah-Won Koo accepts on their Vitals profile.
Does Jah-Won Koo accept virtual/telehealth appointments?
Jah-Won Koo has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
How can I make an appointment with Jah-Won Koo?
You can find contact information for Jah-Won Koo here on Vitals.
Which hospitals is Jah-Won Koo affiliated with?
Jah-Won Koo is affiliated with Northwestern Memorial Hospital.
Where is Jah-Won Koo's office located?
Jah-Won Koo's office is located at 20 S Clark St 11th Fl, Chicago, IL, 60603.

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