Usha S Krishnan, MD

Usha S. Krishnan, MD, DM (Cardiology) is a board-certified pediatric cardiologist with specialized expertise in pulmonary hypertension and congenital heart disease. She cares for infants, children, adolescents, and young adults with a wide range of heart and pulmonary vascular conditions, including complex congenital heart disease, pulmonary hypertension, pulmonary vein stenosis, and heart complications related to premature birth and congenital diaphragmatic hernia. Dr. Krishnan is committed to providing compassionate, family-centered care and believes in partnering with patients and families to develop personalized treatment plans while ensuring they understand every step of their child's care.

Dr. Krishnan earned her Bachelor of Medicine and Bachelor of Surgery (MBBS) from Bombay University in India before completing advanced training in pediatrics, including a Diploma in Child Health (DCH), a Doctor of Medicine (MD) in Pediatrics, and a Diplomate of the National Board in Pediatrics. She went on to complete a Doctor of Medicine (DM) in Cardiology, one of India's highest levels of specialty training in cardiovascular medicine. After moving to the United States, she completed a pediatric residency at New York Medical College and a fellowship in pediatric cardiology at Columbia University, where she received advanced training in diagnosing and treating congenital heart disease and pulmonary hypertension.

Today, Dr. Krishnan is a Professor in Pediatrics and serves as Director of the Pulmonary Hypertension Comprehensive Care Program at New York-Presbyterian Morgan Stanley Children's Hospital. She leads a multidisciplinary team dedicated to caring for children with pulmonary hypertension and other complex heart and lung conditions, providing comprehensive care from infancy through young adulthood. She has extensive experience using advanced imaging, cardiac catheterization, and the latest medical therapies to improve outcomes for children with these rare and complex diseases. She has expertise in program building and co leads the congenital Diaphragmatic Hernia multidisciplinary Program, the Pulmonary Vein Stenosis Program, the Broncho-Pulmonary Dysplasia Program and the Fontan Multidisciplinary Outpatient Program.

In addition to caring for patients, Dr. Krishnan is an internationally recognized leader in pediatric pulmonary hypertension. She has helped develop national and international guidelines for the diagnosis and treatment of pulmonary hypertension in children, leads numerous clinical research studies, and has authored hundreds of scientific publications. Her research focuses on improving treatments, developing new therapies, and advancing care for children with pulmonary hypertension and congenital heart disease.

Dr. Krishnan is also deeply committed to medical education and has spent decades teaching and mentoring medical students, pediatric residents, and pediatric cardiology fellows in the United States and abroad. Her dedication to compassionate patient care, education, and innovation has earned her numerous honors, including induction to the APGAR Academy of Medical Educators, the Academy of Clinical Excellence where she

serves in the Executive committee and is the chair of the communications and outreach subcommittee, the Thomas J. Starc Humanism in Medicine Award and the Julie Vincent Leadership in Medicine Award. She is the Editor-in-Chief of the "Advances in Pulmonary Hypertension " journal and serves on the editorial board of multiple scientific journals. Families appreciate her thoughtful approach, clear communication, and commitment to helping every child achieve the best possible quality of life.

Dr. Mariel Turner is an Associate Professor of Pediatrics at Columbia University Irving Medical Center. She received her undergraduate degree from Smith College, and her medical degree from NYU School of Medicine. She completed Pediatrics residency at Yale-New Haven Hospital, followed by Pediatric Cardiology fellowship at Columbia University Medical Center, serving as one of the chief fellows in 2010-11. She then went on to advanced training in Pediatric and Congenital Interventional Cardiology, also at CUMC, prior to joining the faculty in 2012.

Dr. Turner specializes in cardiac catheterization and transcatheter interventions for pediatric patients with congenital and acquired heart disease, as well as adults with congenital heart disease. She holds board certifications in Pediatrics, Pediatric Cardiology, and Adult Congenital Heart Disease. She is a fellow of the American Academy of Pediatrics, the American College of Cardiology, the Society for Cardiovascular Angiography and Interventions, and the Pediatric and Congenital Interventional Cardiovascular Society. She is also a member of the SCAI “Women in Innovation” Committee. Her research has focused several topics including pulmonary artery growth in patients with congenital heart disease, interventional therapies for pediatric patients with coronary artery disease, and PDA closure in premature infants. As part of the Pediatric Cardiac Catheterization Laboratory, Dr. Turner has also participated in numerous multi-center clinical trials of catheter-based devices and valves for use in pediatric and adult patients with congenital heart disease. Dr. Turner is active in teaching cardiology fellows, pediatric residents, and medical students at CUIMC, and in 2014 she was honored with the Allan J. Hordof Teaching Award. She was appointed the Director of the Program for Transcatheter PDA Closure in Premature Infants at Morgan Stanley Children’s Hospital in 2018, and the Associate Director of the Pediatric Cardiac Catheterization Laboratory in 2020.