Keith Kleinman, MD

Dr. Buddy G. Kozen Jr. is an instructor of emergency medicine at the Johns Hopkins University School of Medicine. His area of clinical expertise is emergency medicine. He earned his M.D. at Johns Hopkins and completed an emergency medicine residency at Naval Medical Center.

Mandeep S. Singh, M.D., Ph.D., is associate professor of ophthalmology and genetic medicine in the Retina Division of the Wilmer Eye Institute and the recipient of the 2023 Andreas C. Dracopoulos Professorship in Ophthalmology. Dr. Singh is a retinal specialist. He is Co-Director of the Genetic Eye Disease (GEDi) Center, and is a principal investigator at the Center for Stem Cells and Ocular Regenerative Medicine (STORM). Dr. Singh completed his medical degree at the National University of Singapore. In 2009, he was elected to the Fellow of the Royal College of Surgeons of Edinburgh. He earned a PhD in ophthalmology from the University of Oxford, United Kingdom, in 2014. He completed fellowships in vitreoretinal diseases and surgery at the Oxford Eye Hospital and Moorfields Eye Hospital, both in the United Kingdom. His clinical expertise includes surgical, medical and genetic conditions of the retina and macula. Dr. Singh is specialty-trained in vitrectomy surgery for retinal detachment, macular holes, macular pucker, epiretinal membrane, proliferative vitreoretinopathy, complex retinal detachments including reoperations, vitreous hemorrhage removal, and other retinal surgeries. He also specializes in age-related macular degeneration, diabetic retinopathy, diabetic macular edema, retinal vein occlusion, and choroidal neovascularization. Dr. Singh sees patients and families with genetic retinal diseases such as retinitis pigmentosa, Usher syndrome, Stargardt disease and macular dystrophies. His research focus is retinal stem cell transplantation. Dr. Singh’s work has been recognized through the Eye Institute–Allergan Research Prize, the Merton College University of Oxford Graduate Prize Scholarship, the Oxford Ophthalmological Congress Founder’s Cup and Medal, the Ruskell Medal, the Johns Hopkins Clinician Scientist Award, and the Bert M. Glaser, MD Award for Innovative Research in Retina. He is a member of the American Academy of Ophthalmology and the Association for Research in Vision and Ophthalmology. He is also a member of the Club Jules Gonin and the Macula Society.

Dr. Diana Steppan is a pediatric hematology, oncology and bone marrow transplant specialist in the Division of Anesthesiology and Critical Care Medicine at Johns Hopkins Children’s Center. Her areas of expertise include treatment of children who are critically ill with hematologic and oncologic diseases and children after bone marrow transplantation. She investigates the intersection of pediatric hematology and oncology with critical care medicine, and she has a special interest in patients requiring ECMO (extracorporeal membrane oxygenation).Dr. Steppan graduated from Ruprecht Karls University in Heidelberg, Germany. She then completed a pediatrics residency at the University of Maryland Medical Center. Later, she finished a fellowship in pediatric hematology, oncology and bone marrow transplantation in a joint National Institutes of Health and Johns Hopkins program. After this training, she obtained a Master of Public Health degree at the Johns Hopkins Bloomberg School of Public Health.