Dr. Hedi L. Leistner

Dr. Katz is the Medical Director of the Sleep Center at Johns Hopkins All Children’s Hospital. He joined the medical staff in 2023. He sees patients at the main campus in St. Petersburg, Florida, as well as at Johns Hopkins All Children’s Outpatient Care, Sarasota. Dr. Katz earned his medical degree from McGill University. He completed his internship and residency in pediatrics at the University of California, Irvine Medical Center. He also completed a fellowship in pediatric pulmonology at the Johns Hopkins University School of Medicine in Baltimore, Maryland. His clinical interests include sleep-disordered breathing, infant breathing disturbances and hypersomnia. His research interests are focused on the pathophysiology of obstructive sleep apnea in children. Dr. Katz is highly rated in 4 conditions, according to our data. His top areas of expertise are Obstructive Sleep Apnea, Micrognathia, Cerebral Hypoxia, Adenoidectomy, and Gastrostomy.

Seifu Demissie is a Pediatric Pulmonologist in Tampa, Florida. Dr. Demissie is highly rated in 1 condition, according to our data. His top areas of expertise are Asthma, Laryngomalacia, Stridor, and Periodic Limb Movement Disorder. Dr. Demissie is currently accepting new patients.

Dr. Green, M.D., M.H.S., is a pediatric pulmonologist and the medical director of the nationally accredited Cystic Fibrosis (CF) Care Center and the CF Therapeutic Development Center at Johns Hopkins All Children’s Hospital. She is focused on clinical care for patients with CF and clinical research using genetic modifiers of CF disease. Dr. Green is also an assistant professor of pediatrics with the Johns Hopkins University School of Medicine. Dr. Green and the CF team were honored for Innovations in Clinical Care for Johns Hopkins All Children's in the 2024 Johns Hopkins Medicine Clinical Awards and for Clinical Collaboration and Teamwork in 2019. Dr. Green joined the Johns Hopkins All Children’s Hospital faculty in 2015. She previously served as associate director of the Duke University Pediatric Cystic Fibrosis Center and was an assistant professor of pediatrics at the Duke University School of Medicine. She completed her pediatric residency and pediatric pulmonary fellowship at the Johns Hopkins University School of Medicine. She holds a masters in health science degree from the Johns Hopkins Bloomberg School of Health, with an emphasis on design of clinical research trials and clinical epidemiology. She is a graduate of the University of Florida School of Medicine. Dr. Green serves as principal investigator for six clinical trials in cystic fibrosis and previously was principal site investigator for a multi-center consortium for asthma research supported by the American Lung Association. Dr. Green is highly rated in 1 condition, according to our data. Her top areas of expertise are Cystic Fibrosis, Secondary Immunodeficiency (SID), Newborn Jaundice, Obesity in Children, and Gastrostomy.