Current Senior Fellows

Andrew Brennan, MD

Pediatric Echocardiography

Training Dates: 7/07/2025 - 7/06/2026

Andrew completed his undergraduate work at Northeastern with a major in Health Science. After college he spent 2 years as a research assistant in pediatric cardiology at Boston Children’s where he worked with the interventional team working on a variety of cath device studies and health care utilization studies for which he first authored 2 papers in Pediatric Cardiology (with one additional 2nd author publication). He then went to medical school at Rutgers – Robert Wood Johnson and ventured west for his residency here at Stanford. Here at Stanford, he has worked with Alisa on evaluating indices of global and regional RV systolic function in our TOF/PA/MAPCAs patients and has submitted an abstract with the EP group on predictors of epicardial pacing lead performance. His personal interests include staying active outdoors (by hiking, gardening, as well as playing soccer, golf, and tennis), reading (especially autobiographies and health care novels), learning new recipes, and travel (with his favorite trip being a visit to Brazil during World Cup in 2014).

Brendan Floyd, MD, PhD

Pediatric Heart Failure/Cardiac Transplantation

Training Dates: 7/07/2025 - 7/06/2026

Elisa McCarhthy, MD

Pediatric Pulmonary Hypertension

Training Dates: 7/07/2025 - 7/06/2026

Elisa completed her undergraduate work at Dartmouth with majors in Economics, Government, and Spanish. She completed a post-baccalaureate pre-medical program at Johns Hopkins and then spent two years as a clinical research coordinator with our own Jeff Feinstein. She then went on to Loyola University in Chicago for medical school and was a resident in Pediatrics at Primary Children’s in Utah.  She has won multiple awards for innovation in medical education, has numerous publications, and is currently involved in several research endeavors, including a project related to transcatheter pulmonary valve replacement with Mary Hunt Martin. She was co-captain of Dartmouth's cross-country and track team in college and enjoys spending her free time outdoors (rock climbing, back country skiing, mountain biking, soccer and swimming, to name a few)!

Ramya Ramachandra, MD

Pediatric Echocardiography

Training Dates: 7/07/2025 - 7/06/2026

Ramya joins us from Driscoll Children’s Hospital (Texas A&M College of Medicine) after earning her medical degree at Bangalore Medical College in India. In medical school, she secured the highest score among over 100,000 students in their common entrance examination. She is currently investigating feeding intolerance in infants with ductal dependent congenital heart disease and is developing a clinical pathway for neonatal jaundice. She has also submitted first author manuscripts and presented at AHA on the association between Kawasaki disease and allergies in children and the outcome of Cook Formula stents for vessel stenoses in children with CHD. Ramya rotated here at Stanford as a visiting resident in both the inpatient and outpatient areas of the Heart Center. Her personal interests include oil and watercolor painting, hiking, trying cookbook recipes and dancing.

Laura Wattenbarger, MD

Pediatric Electrophysiology

Training Dates: 7/07/2025 - 7/06/2026

Laura completed her undergraduate degree at UT-Austin with a major in biomedical engineering. She then completed her medical school training at Texas A&M and is currently a 3rd year resident at Texas Children’s. On the academic side she has been engaged in a project assessing atrial tachyarrhythmias after lung transplantation. On the personal side she enjoys running (completed five half marathons and currently training for her sixth), playing beach volleyball, hiking in national parks and she is currently a member at Houston's museum of fine arts.