Monica Lo, MD

Specializes in

Monica Lo, MD

Dr. Monica Lo is board certified in Cardiovascular Disease and Clinical Cardiac Electrophysiology. She treats a variety of arrhythmias (bradycardia, tachycardia, atrial fibrillation, atrial flutter, ventricular tachycardia, supraventricular tachycardia) by performing ablations and implanting pacemakers and defibrillators. Depending on the arrhythmia, the ablative procedure can be curative, allowing her patients to discontinue long-term medication use. Her other interests are women’s health, pregnancy and heart disease, and stroke prevention by left atrial appendage occlusion (Amulet and Watchman implantation).

Dr. Lo came to Little Rock to establish the complex arrhythmia ablation program at the Arkansas Heart Hospital. The program is now one of the busiest centers in the world. She has led several important clinical trials, with some resulting in the FDA approval of ablation catheters and ablative technology. She delights in bringing the newest cutting-edge tools to Arkansas, which allows her patients to receive therapies not available otherwise. Because of her expertise, she trains other physicians from around the world on these advances, through lectures and in-person proctoring.


Born in Taiwan, Dr. Monica Lo moved to the United States with her family when she was 12. She graduated with honors from Rice University and received her medical degree at the University of Texas Southwestern Medical Center in Dallas, where she was inducted into the Alpha Omega Alpha Honor Medical Society. She stayed at UT Southwestern to complete her internal medicine residency and fellowships in cardiology and clinical cardiac electrophysiology.

Dr. Lo well known for her devotion to expanding her knowledge and expertise to improve the lives. Her patients entrust their heart health to her because of her extensive knowledge and compassion inside and outside of the cath lab.

“In medical school training they tell us that you’re either a doer or a thinker — cardiology offers both for me. I am able to develop a relationship with my patients but also do procedures that make their lives better,” she said.

Dr. Lo also serves as the Medical Director for Right Rhythm Monitoring, a remote cardiac monitoring service. During her time off, she loves to travel and spend time with her family. Besides English, she speaks Mandarin and Taiwanese.

Make an appointment
Existing Patients: (501) 219-6468
New Patients: (833) 733-7244

What patients are saying about Dr. Lo:

“Dr. Lo has performed many surgeries on my heart — she is the best. Thank you, Dr. Lo.” 

“Dr. Lo did an ablation on me in 2015, and I have had no problems since then. She was wonderful. Thank you, Dr. Lo.”

“Dr. Lo is an awesome doctor. She has controlled my husband’s AFIB!” 

“Dr. Lo was the most compassionate and caring physician our family has had…”

“Electrophysiologists do not get this good often. I highly, highly recommend Dr. Lo.” 

Dr. Lo in the news:

Dr. Lo named one of AY’s Best Women in Healthcare.

Dr. Lo named 2021 Intriguing Women of the Year

Uptick in ablation procedures linked to improved technology

Dr. Monica Lo: Treating atrial fibrillation with a heart electrician

FOX16 – The importance of sleep with Dr. Monica Lo

Health Matters: Advice for AFIB patients

Dr. Lo talks with KATV about ablations

Dr. Lo talks with FOX16 on importance of sleep

Understanding high heart rate and COVID-19

Red wine and heart health: Does a glass a day really help?