About Dr. AFib: Dr. Percy F. Morales MD

Dr. Percy Francisco Morales is a board certified Cardiologist, Electrophysiologist, Author, and Blogger.

Dr. Morales has lived in the Houston area for over 15 years. He was raised in Chicago, Illinois and graduated with a Bachelor of Science degree from the University of Illinois in Urbana-Champaign. Afterward, he received his M.D. from Washington University School of Medicine in Saint Louis, MO

Upon receiving his M.D., Dr. Morales moved to Houston to complete his internship and residency at Baylor College of Medicine. There, he also completed his fellowship in cardiovascular disease and sub-specialty training in clinical cardiac electrophysiology. During his time at Baylor College of Medicine, Dr. Morales trained with world-renowned physicians and utilized cutting-edge technology to perform complicated electrophysiology procedures.

As a member of both the Heart Rhythm Society and American College of Cardiology, Dr. Morales has published articles on novel ablation strategies for atrial fibrillation, and has made professional presentations at national conferences.

Dr. Morales is bilingual in Spanish and his clinical interests include cardiac arrhythmias, such as atrial fibrillation and atrial flutter, as well as implantable cardiac rhythm devices.

Dr. Morales has a particular passion when it comes to educating patients with atrial fibrillation. Dr. Morales believes an educated, empowered patient will be able to make a more informed decision regarding their care and will result in better outcomes for patients living with atrial fibrillation.

Dr. Percy F. Morales MD

Due to medical licensing regulations, Dr. Morales only accepts in person appointment requests for patients living in the metropolitan areas of Houston, Texas, United States.

Modern Heart and Vascular 18980 W Memorial Dr #100, Humble, TX 77338 For Appointments Call: 832-644-8930

Education & Awards


Medical School: Washington University School of Medicine, St. Louis, MO

Internship: Baylor College of Medicine. Houston, TX

Residency: Baylor Baylor College of Medicine. Houston, TX

Cardiology Fellowship: Baylor College of Medicine. Houston, TX

Clinical Cardiac Electrophysiology Fellowship: Baylor College of Medicine. Houston, TX

ABIM Certifications

Clinical Cardiac Electrophysiology

Cardiovascular Disease

Internal Medicine

View Dr. Morales’s Current certification status Here.


Ethanol infusion in the vein of Marshall facilitates mitral isthmus ablation.

The Human Left Atrial Venous Circulation as a Vascular Route for Atrial Pharmacological Therapies: Effects of Ethanol Infusion.

Dr. Morales in the News: