Justin Arunthamakun, MD, FACC

Dr. Arunthamakun specializes in the treatment of cardiac arrhythmias and the management of devices such as pacemakers and defibrillators. The scope of his care also includes the treatment of complex atrial flutters, supraventricular tachycardia and ventricular arrhythmias. He has a special interest in minimally invasive fluoroless catheter ablation therapies using radiofrequency ablation, cryoablation, and/or pulse-field ablation for atrial fibrillation. When a patient’s treatment plan requires an implantable cardiac device, Dr. Arunthamakun is well trained in implantation of pacemakers, defibrillators and biventricular devices, with a particular focus in conduction system pacing, leadless pacemakers and left atrial appendage devices.


When Dr. Arunthamakun has time away from caring for his patients, he enjoys spending time outdoors walking his dog, visiting US National Parks, golfing and playing tennis.