Melanie Nies, MD

Dr. J. Michael Collaco is a professor of pediatrics at the Johns Hopkins University School of Medicine. His clinical specialty is pediatric pulmonary medicine, including chronic lung disease of premature infants, lung disease in medically complex patients including ventilators and tracheostomies, hereditary hemorrhagic telangiectasia, aerodigestive disorders, and general pediatric pulmonary conditions. He sees patients inpatient and outpatient at Johns Hopkins (East Baltimore campus), inpatient and outpatient at Mount Washington Pediatric Hospital, and inpatient at Kennedy Krieger Institute.Dr. Collaco attended Yale University for undergraduate studies and received his M.D. and M.S. (Anatomy) from Case Western University School of Medicine in Cleveland, Ohio. He completed his pediatric residency, pediatric pulmonary fellowship, M.B.A., M.P.H., and Ph.D. (Clinical Epidemiology) at the Johns Hopkins University. Dr. Collaco joined the Johns Hopkins faculty in 2008.His primary research interest is in the epidemiology of pediatric respiratory diseases, with a focus on environmental risk factors for cystic fibrosis and bronchopulmonary dysplasia as well as a special interest in the effects of secondhand smoke and electronic cigarette emissions. He has published over 140 peer-reviewed articles.Dr. Collaco is a member of the Cystic Fibrosis Research Development Center and the Hereditary Hemorrhagic Telangiectasia Center of Excellence. He has been recognized by Johns Hopkins with the John C. Hume Scholarship, the Francis F. Schwentker Research Award, and the Robert Dyar Award. Dr. Collaco is a fellow of the American Academy of Pediatrics.

Dr. Kristin M. Arcara completed her undergraduate studies at SUNY Buffalo, and received her medical degree from SUNY Upstate Medical University.She then completed her residency in pediatrics at the Johns Hopkins Hospital, spending an additional year serving as Chief Resident. She also completed a fellowship in pediatric endocrinology at the Johns Hopkins Hospital.Dr. Arcara has been a faculty member in the Division of Pediatric Endocrinology at Johns Hopkins since 2014. After her fellowship, Dr. Arcara spent one year as a Pediatric Endocrinologist at Children’s National Medical Center before returning to Johns Hopkins Hospital.Dr. Arcara’s clinical activities include heading a multidisciplinary Pediatric Diabetes clinic at Mt. Washington Pediatric Hospital, consisting of certified diabetes educators, registered dietitian and a team of psychologists with extensive training and expertise in the unique issues surrounding management of diabetes in children. She also has general pediatric endocrine clinics in which she evaluates and treats a variety of disorders including short stature, abnormal pubertal development, thyroid disorders, polycystic ovary syndrome, hypopituitarism, diabetes insipidus, pituitary adenoma, congenital adrenal hyperplasia and disorders of sexual differentiation, Turner syndrome and Prader Willi syndrome among others.Dr. Arcara is a member of Mt. Washington Pediatric Hospital’s multidisciplinary Prader Willi Syndrome clinic.