Leon J. Frazin, MD - Cardiologist in Illinois - Profile, Reviews

Leon J. Frazin, MD - Cardiologist in Illinois - Profile, Reviews

Dr. Leon J. Frazin, MD is a board-certified cardiologist in Chicago, IL.

Explore his specialties, practice details, and reviews on our U.S. healthcare professional directory.

About Dr. Leon J. Frazin, MD

Dr. Leon J. Frazin, MD is a highly experienced cardiologist practicing in the Division of Cardiology at UI Health in Chicago, Illinois.

He specializes in non-invasive cardiology, echocardiography, and comprehensive cardiovascular care, helping patients diagnose and manage a wide range of heart conditions.

Dr. Frazin is fluent in English and Spanish, and he has decades of experience in clinical cardiology and patient care.

Credentials & Education

  • Medical School: University of Illinois College of Medicine at Chicago
  • Residency: Baylor University Affiliated Hospitals, Houston, TX
  • Fellowship: Texas Heart Institute, Houston, TX
  • Board Certifications: Cardiovascular Disease, Non-invasive Cardiology, Echocardiography

Specialties

  • Cardiology
  • Non-invasive Cardiology
  • Echocardiography
  • Heart Ultrasound
  • Cardiovascular Disease Management

Practice Location & Contact

Clinic: UI Health – Division of Cardiology — Outpatient Care Center, Suite 3C, 1801 W. Taylor St., Chicago, IL 60612

Call: +1 312-996-6480

Services Offered

Dr. Frazin offers comprehensive cardiovascular care including diagnostic echocardiography, non-invasive cardiac imaging, preventive heart disease management, and coordinated care for chronic heart conditions such as coronary artery disease and heart failure.

License Information

NPI (National Provider Identifier): 1174555916 — Verify on NPI Registry

FAQ

1. What conditions does Dr. Leon Frazin treat?

Dr. Frazin treats cardiovascular diseases including coronary artery disease, heart failure, arrhythmias, and high blood pressure.

2. Does Dr. Frazin specialize in cardiac imaging?

Yes, he specializes in non-invasive cardiology and echocardiography (heart ultrasound) to diagnose and monitor cardiac conditions.

3. Is Dr. Frazin accepting new patients?

Yes, Dr. Frazin is currently accepting new patients at UI Health in Chicago.

4. What languages does Dr. Frazin speak?

Dr. Frazin speaks English and Spanish with his patient population. 

5. Where did Dr. Frazin receive his medical training?

He earned his medical degree from the University of Illinois College of Medicine at Chicago and completed advanced training including residency and fellowship in cardiology.

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FAQ

What is the best hospital in Chicago for heart problems?

Chicago and its suburbs are home to many of the nation’s highest-rated medical centers, with 22 Chicago-area hospitals earning positions on Forbes’ inaugural “Top Hospitals” list for 2026, which evaluates institutions on quality, safety, outcomes, patient experience, and value.

Several local hospitals—including Northwestern Memorial Hospital, Rush University Medical Center, and Ascension St. Joseph in Chicago—received prestigious five-star overall ratings, highlighting their excellence in clinical outcomes and best practices, while others earned four-star scores for strong performance across key health care measures, reflecting the region’s robust heart and general medical care infrastructure.

Which Chicago cardiologists were named among the city’s top doctors?

According to UI Health’s announcement recognizing 80 Castle Connolly–designated physicians, several UI Health cardiology and cardiovascular specialists were included among the top cardiology doctors in Chicago, reflecting strong peer endorsements, excellence in patient care, and leadership in advanced heart-disease treatment.

Their inclusion highlights UI Health’s expanding reputation in cardiovascular medicine and its role as a major center for high-quality heart care in the Chicago region.

Which Illinois hospitals ranked among the best in 2025?

In the latest U.S. News & World Report 2025-2026 Best Hospitals Honor Roll, two Illinois hospitals — Northwestern Memorial Hospital and Rush University Medical Center — were ranked among the top 20 hospitals in the nation, with Northwestern Memorial earning first place in Illinois and strong performance across multiple adult specialties, while the Chicago area also saw 21 hospitals listed among the best regional care providers, highlighting the region’s high standards in medical care and patient outcomes.