Omar Almousalli, MD

Omar Almousalli, MD - Cardiologist in Illinois - Profile, Reviews

Dr. Omar Almousalli, MD is a board‑certified cardiologist in Belleville, IL and Fairview Heights, IL.

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

About Dr. Omar Almousalli, MD

Dr. Omar Almousalli, MD is a dedicated cardiologist providing high‑quality cardiovascular care at Advanced Heart Care, LLC in Belleville and Fairview Heights, Illinois.

He is board‑certified in cardiovascular disease and nuclear cardiology, and is a Fellow of the American College of Cardiology. 

Dr. Almousalli focuses on diagnosing and treating heart conditions such as cardiomyopathy, congestive heart failure, arrhythmias, and coronary artery disease using advanced diagnostics and interventions.

He earned his medical degree from the University of Aleppo Faculty of Medicine and completed his residency and fellowship at Chicago Medical School at Rosalind Franklin University of Medicine & Science.

Credentials & Education

Medical School: University of Aleppo Faculty of Medicine

Residency: Internal Medicine, Chicago Medical School at Rosalind Franklin University

Fellowship: Cardiovascular Disease, Chicago Medical School at Rosalind Franklin University

Board Certifications: Cardiovascular Disease, Nuclear Cardiology, Fellow of the American College of Cardiology (FACC)

Specialties

  • Cardiology
  • Cardiovascular Disease
  • Heart Failure & Heart Disease Management
  • Cardiomyopathy & Arrhythmia Care
  • Nuclear Cardiology Diagnostics

Practice Location & Contact

Clinic: Advanced Heart Care, LLC — Belleville, IL & Fairview Heights, IL

Call: +1 618‑222‑8900

Address: 4600 Memorial Dr, Ste 220, Belleville, IL 62226

Services Offered

Dr. Omar Almousalli offers a wide range of cardiovascular services including heart disease diagnosis, heart failure care, arrhythmia management, echocardiography, nuclear cardiology diagnostics, stent placements, angioplasties, and personalized heart care plans.

License Information

NPI (National Provider Identifier): 1134161904 — Verify on NPI Registry

FAQ

1. What conditions does Dr. Omar Almousalli treat?

Dr. Almousalli treats a broad range of cardiovascular conditions including heart failure, coronary artery disease, angina, arrhythmias, and cardiomyopathy.

2. Does Dr. Almousalli perform advanced diagnostics?

Yes, he offers echocardiography, stress testing, and nuclear cardiology diagnostics to assess heart function and disease.

3. Is Dr. Omar Almousalli accepting new patients?

Yes, Dr. Almousalli is currently accepting new patients at Advanced Heart Care in Belleville and Fairview Heights, IL.

4. What languages does Dr. Almousalli speak?

Dr. Almousalli speaks English; some sources report he also speaks Arabic.

5. What hospitals is he affiliated with?

He is affiliated with institutions including Memorial Hospital Belleville and HSHS St. Elizabeth’s Hospital in O’Fallon, IL.

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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.