Cardiac Electrophysiology Fellows

Dr. Rahul Ahuja was born in Long Beach, CA, and raised in Fremont, CA. He earned a BA in Neuroscience from Boston University and a medical degree from Touro College of Osteopathic Medicine in Harlem, NY. He completed his internal medicine residency at Alameda Health System’s Highland Hospital in Oakland, CA, followed by a fellowship in cardiovascular disease at The Queen’s Medical Center/University of Hawai‘i in Honolulu, HI. He is interested in a career as a clinician-educator and is passionate about providing high-quality care to vulnerable and marginalized patient populations. His prior research has focused on implementing care process models in the emergency department to enhance the management and disposition of patients presenting with atrial fibrillation. Outside of work, he enjoys listening to records, swimming, and occasionally indulging in a maple donut.

Dr. Fazal was born in Pakistan and grew up in Dubai. He attended college at McGill University where he studied anatomy and cell biology. He completed his MS and MD from Boston University School of Medicine, graduating AOA and Magna Cum Laude. Fazal completed his residency in Internal Medicine at Stanford, where he studied the arrhythmia burden of tyrosine kinase inhibitors in patients using cardiac holter monitors and worked on using AI to predict arrhythmias in patients undergoing tyrosine kinase inhibitor therapies. As a fellow, he hopes to continue his work at the intersection of cardio-oncology and electrophysiology and pursue a career in academic cardiology. Outside of work, he is passionate about soccer, hiking, and cooking.  

Dr. Tasmeen Hussain grew up in Columbia, Missouri and earned a B.S. with honors in Molecular and Cellular Biology at Johns Hopkins University. She then attended Northwestern University and completed both her MD/MPH degrees as well as Internal Medicine residency there. Her research goals revolve around the study of tech-based behavioral interventions to improve cardiovascular health on a large scale. Her previous work includes research on smartphone apps for chronic disease management in pregnancy with Dr. Lynn Yee, motivational interviewing techniques to improve diet with Dr. Neil Stone and cardiovascular disease risk in liver transplant patients with Drs. Donald Lloyd-Jones and Lisa Van Wagner. Clinically, Dr. Hussain hopes to build a career in preventive cardiology and has a particular passion for the care of Spanish-speaking patients and communities.   

Dr. Esteban Arevalo, originally from Chile, earned his medical degree from the University of Concepcion School of Medicine and completed his internal medicine residency at Kettering Health, OH, followed by cardiology fellowship training at Loma Linda University, CA. He is also board certified in Lifestyle Medicine. He has been actively involved in clinical research with a focus on pulsed field ablation, leadless pacing technologies, left atrial appendage occlusion, and preventive cardiology, with additional interests in arrhythmia mechanisms, AI in healthcare, and biodesign. His work has been published in peer-reviewed journals, including Heart Rhythm, the Journal of Cardiovascular Electrophysiology, etc. He serves as a reviewer for Heart Rhythm O2 and as a research mentor to national and international investigators. Outside of medicine, Esteban is a classically trained pianist and flutist. He enjoys outdoor activities, engaging in his faith community, and exploring new plant-based culinary experiences with his wife; together, they care for a rescued puppy from Southern California.

Dr. Esther Kwak is originally from Chicago, Illinois. She earned her Bachelor of Arts in Biology at Northwestern University and received her medical degree at Midwestern University/Chicago College of Osteopathic Medicine. She completed her internal medicine residency at the University of Chicago (NorthShore), where she served as Chief Resident, and went on to complete her general cardiology fellowship at Medical College of Wisconsin. Her research interests focus on the intersection of cardiac arrhythmias and heart failure. Outside of work, she enjoys spending time outdoors with her husband and two children, especially exploring parks and embarking on new family adventures.

Dr. Hari Sritharan was born and raised in Sydney, Australia, and completed his medical degree at The University of New South Wales, Sydney. He undertook his medical residency and advanced cardiology training at Royal North Shore Hospital in Sydney, during which time he completed a Master's degree in Medicine (Clinical Epidemiology), graduating with High Distinction. Driven by a passion for clinical research, Hari completed a PhD at the University of Sydney investigating the clinical translation of machine learning and advanced predictive analytics in cardiovascular disease, integrating AI-based predictive models to assess outcomes across a range of cardiovascular conditions. His clinical and academic interests include cardiac electrophysiology, translational cardiovascular AI research, and data science in health. Outside of work, Hari loves spending time with his wife and son, is a self-professed cricket tragic, and a keen runner.