John Cahill, MD - Interventional Cardiologist in Illinois - Profile, Reviews
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Dr. John Cahill, MD is a board‑certified interventional cardiologist practicing in Elmhurst and Naperville, Illinois.
Explore his specialties, practice details, and patient care focus on our U.S. healthcare professional directory.
About Dr. John Cahill, MD
Dr. John Cahill, MD is an experienced interventional cardiologist based in Elmhurst, IL with decades of clinical experience.
He specializes in the diagnosis and treatment of coronary artery disease, structural heart conditions, and peripheral vascular disease, using minimally invasive techniques to improve cardiovascular health.
Dr. Cahill earned his medical degree from Loyola University Chicago Stritch School of Medicine, completed residency and fellowship training in cardiovascular disease, and serves patients at multiple practice locations throughout Illinois.
He is committed to patient‑centered care and ongoing management of chronic heart conditions.

Credentials & Education
- Medical Degree: Loyola University Chicago Stritch School of Medicine — Maywood, IL
- Residency & Fellowship: Internal Medicine and Cardiovascular Disease at Loyola University Medical Center, IL
- Board Certifications: Internal Medicine, Cardiovascular Disease — Fellow of the American College of Cardiology
Specialties
- Interventional Cardiology
- Coronary Artery Disease Treatment
- Structural Heart Procedures
- Peripheral Vascular Care
- Cardiovascular Risk Management
Practice Location & Contact
Primary Clinic: Midwest Cardiovascular Institute — Elmhurst, IL
Call: +1 331‑231‑6200
Address: 133 E Brush Hill Rd, Suite 202, Elmhurst, IL 60126
Services Offered
Dr. Cahill provides a range of cardiovascular services including advanced interventional procedures such as angioplasty and stent placement, comprehensive coronary artery disease care, structural heart assessments, peripheral vascular interventions, and personalized long‑term treatment plans for heart health improvement.
License Information
NPI (National Provider Identifier): 1124071337
FAQ
1. What conditions does Dr. Cahill treat?
Dr. Cahill treats coronary artery disease, atherosclerosis, heart valve disorders, and other cardiovascular conditions affecting blood flow and heart function.
2. Does Dr. Cahill accept new patients?
Yes, he is currently accepting new patients at his Elmhurst practice; patients should call ahead to schedule an appointment and confirm details.
3. What procedures does Dr. Cahill specialize in?
He specializes in interventional cardiology procedures such as angioplasty, stent placement, and other catheter‑based treatments that improve blood flow.
4. Where did Dr. Cahill train?
Dr. Cahill completed his residency and fellowship training in internal medicine and cardiovascular disease at Loyola University Medical Center after attending medical school at Loyola University Chicago Stritch School of Medicine.
5. What languages does Dr. Cahill speak?
Dr. Cahill speaks English and Spanish, helping him communicate with a diverse patient population.