
Overview
Jah-won Koo is a primary care provider, practicing in Internal Medicine in Chicago, Illinois. Dr. Koo has been practicing medicine for over 31 years and is rated as an Experienced provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Low Potassium Level, Sickle Cell Disease, Sitosterolemia, and Gitelman Syndrome.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- HMO
- POS
- PPO
- EPO
- HMO
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- EPO
- HMO
- PPO
- EPO
- POS
- HMO
- INDEMNITY
- POS
- PPO
- EPO
- POS
- PPO
- OTHER MANAGED MEDICAID
- OTHER MEDICAID
- STATE MEDICAID
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- EPO
- PPO
- OTHER COMMERCIAL
- EPO
- HMO
- POS
- PPO
- MEDICARE DISCOUNT CARD
- MEDICARE PDP
- OTHER MEDICARE
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
Endeavor Health Medical Group
Jose Nazari, MD, a cardiac electrophysiologist at Endeavor Health, specializes in diagnosing and treating arrhythmias through advanced, minimally invasive procedures. He combines a passion for medicine and technology to deliver precise, personalized care. Dr. Nazari is excited about emerging techniques like pulsed field ablation and is committed to improving patients’ quality of life through evidence-based treatments. Dr. Nazari is rated as a Distinguished provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Atrial Fibrillation, His Bundle Tachycardia, Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Cardiac Ablation, and Pacemaker Implantation.
Endeavor Health Medical Group
Westby Fisher, MD, a cardiac electrophysiologist at Endeavor Health, treats patients with irregular, fast or slow heart rhythms using the latest innovations in arrhythmia care. With a background in biomedical engineering, he brings technical insight to procedures such as leadless pacemakers and catheter ablation. Dr. Fisher prioritizes clear communication and devotes ample time to each patient to understand their needs and guide treatment decisions. Dr. Fisher is rated as a Distinguished provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Atrial Fibrillation, His Bundle Tachycardia, Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Pacemaker Implantation, and Cardiac Ablation.
Ashok Sawlani is a primary care provider, practicing in Internal Medicine in Chicago, Illinois. Dr. Sawlani is rated as a Distinguished provider by MediFind in the treatment of Familial Neurocardiogenic Syncope. His top areas of expertise are Necrosis, Cholecystitis, Acute Kidney Failure, Gastrostomy, and Endoscopy. Dr. Sawlani is currently accepting new patients.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Experienced
- Chronic CoughDr. Koo isExperienced. Learn about Chronic Cough.
- Complex Regional Pain SyndromeDr. Koo isExperienced. Learn about Complex Regional Pain Syndrome.
- FaintingDr. Koo isExperienced. Learn about Fainting.
- Familial HypertensionDr. Koo isExperienced. Learn about Familial Hypertension.
- Familial Neurocardiogenic SyncopeDr. Koo isExperienced. Learn about Familial Neurocardiogenic Syncope.
- Gitelman SyndromeDr. Koo isExperienced. Learn about Gitelman Syndrome.

