New Faculty

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Peta AlexanderPeta Alexander, MBBS, is an attending in the cardiac intensive care unit (CICU) and will soon be director of the Challenging Recovery Program (CRP) for longer-stay CICU patients. This innovative, multi-disciplinary program will focus on optimizing management strategies for the most medically fragile patients in the CICU: patients who require longer-term attention for chronic and complex issues. Alexander recently completed a senior fellowship in cardiac intensive care and heart failure and transplantation here at Boston Children’s Hospital. Before that, she was a pediatric cardiologist and a pediatric ICU consultant in Melbourne and Gold Coast, Australia. She has also completed fellowships in both pediatric cardiology and pediatric anesthesia and pain management at the Royal Children’s Hospital in Melbourne.

Ryan CallahanRyan Callahan, MD, is an interventional pediatric cardiologist in the Department of Cardiology and an instructor in the Department of Pediatrics at Harvard Medical School. Callahan completed his pediatric residency and pediatric cardiology fellowship at the Children’s Hospital of Pittsburgh prior to becoming a senior interventional fellow at Boston Children’s Hospital. His clinical focus is performing minimally invasive procedures on patients with congenital heart disease, while his research interests include catheter-based management of the right ventricular outflow tract. He lives in Boston with his wife Danielle, an emergency room physician assistant at Lahey Hospital, as well as his two children, Parker and Raya.  

We are grateful to have been ranked #1 on U.S. News & World Report's list of the best children's hospitals in the nation for the third year in a row, an honor we could not have achieved without the patients and families who inspire us to do our very best for them. Thanks to you, Boston Children's is a place where we can write the greatest children's stories ever told.”
- Sandra L. Fenwick, President and CEO

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