Renowned Transplant Hepatologist John Bucuvalas, MD, Joins Mount Sinai Health System
Renowned transplant hepatologist John Bucuvalas, MD, has been named Professor, Vice Chair of Faculty Affairs, and Chief of the Division of Hepatology in the Jack and Lucy Clark Department of Pediatrics at the Icahn School of Medicine at Mount Sinai and the Mount Sinai Kravis Children’s Hospital. He will also serve as Director of Solid Organ Transplant Outreach for the Recanati/Miller Transplantation Institute (RMTI) at Mount Sinai.
“We are ecstatic to have someone of Dr. Bucuvalas’s caliber and experience join our team,” says Sander S. Florman, MD, Director of the Recanati/Miller Transplantation Institute. “This is a game changer for pediatric liver transplantation at Mount Sinai and his presence will benefit all pediatric liver patients in the tristate area.”
As a pediatric transplant hepatologist, Dr. Bucuvalas has advanced and extensive training in pediatrics and gastroenterology as well as a comprehensive understanding of liver diseases. This combination of specialty training enables him to effectively evaluate the youngest liver transplant candidates and manage their care both before and after transplantation. In addition, he has expertise in managing issues like immunosuppression and transplant-associated infectious diseases.
Dr. Bucuvalas’s primary research efforts, funded by the National Institutes of Health (NIH), focus on clinical and translational work to define predictors of operational tolerance, to predict risk for and determine the mechanism of long-term structural liver allograft injury, and to define strategies to mitigate non-adherence in transplant recipients, an effort in which he works in close collaboration with Eyal Shemesh, MD, Chief of the Division of Behavioral and Developmental Health in the Department of Pediatrics at Mount Sinai.
He has published broadly on outcomes following liver transplantation, non-adherence, late liver graft injury, immunosuppression withdrawal, and functional outcomes of liver transplantation. He worked with the National Institutes of Health to conduct a one-day symposium on improving long-term outcomes for pediatric liver transplant recipients and was lead author of the symposium report, which recommended specific research efforts to improve long-term well-being, health, and survival for pediatric liver transplant patients. As Chair of Studies of Pediatric Liver Transplantation (SPLIT), he helped to lead a restructuring of the SPLIT data registry and organizational structure to meet the goals aligned in the NIH symposium report.
“I am struck by the collaborative, forward-thinking and innovative culture both within RMTI and the Department of Pediatrics. The commitment to doing their best for patients and families is evident throughout the organization,” says Dr. Bucuvalas. “That environment, together with a rich history, makes Mount Sinai very special.”
Dr. Bucuvalas earned his medical degree from Harvard Medical School. He completed his residency, including a year as Chief Resident, in Pediatrics at Massachusetts General Hospital and pursued further advanced training in gastroenterology during his fellowship at Cincinnati Children’s Hospital. Prior to joining Mount Sinai, he was Professor of Pediatrics and Director of the Integrated Solid Organ Transplant Program at Cincinnati Children’s Hospital.
He is board certified in pediatric gastroenterology with a certificate of added qualification in transplant hepatology. He is a member of the American Pediatric Society and a fellow of the American Association for the study of Liver Disease.
About the Mount Sinai Health System
Mount Sinai Health System is one of the nation’s leading integrated academic health systems and one of the largest in the New York metropolitan area. Its comprehensive system includes seven hospitals, more than 400 outpatient practices, over 600 research and clinical laboratories, the Icahn School of Medicine at Mount Sinai, the Graduate School of Biomedical Sciences, and the Mount Sinai Phillips School of Nursing. Together, the Health System comprises approximately 48,000 employees, more than 9,000 physicians, and 8,600 nurses.
As a leading learning health system, Mount Sinai combines clinical expertise with scientific discovery to improve patient care while training the next generation of health care and biomedical leaders. The Health System provides care across every stage of life, from prenatal care through geriatrics, while advancing personalized medicine through artificial intelligence, data science, and biomedical research.
Mount Sinai is consistently recognized among the nation’s leading academic health systems for patient care, research, and education. The Mount Sinai Hospital is ranked No. 1 in New York by Newsweek® and No. 7 in the U.S. on the magazine’s World’s Best Hospitals 2026 list. The Icahn School of Medicine at Mount Sinai ranks No. 9 among U.S. medical schools and No. 1 among freestanding medical schools for National Institutes of Health grant funding, reflecting the strength of its scientific enterprise and leadership in biomedical research.