Joana Machry, M.D., FAAP, specializes in newborn medicine at the Johns Hopkins All Children's Maternal, Fetal & Neonatal Institute. She serves as the program director for the Johns Hopkins All Children’s Neonatal-Perinatal Medicine Fellowship Program and is an assistant professor in pediatrics at the Johns Hopkins University School of Medicine. Dr. Machry received Johns Hopkins Medicine Clinical Awards for Clinical Collaboration and Teamwork for leading the NICU Pulmonary Taskforce in 2017 and the Tracheostomy Team in 2022. Dr. Machry received a Department of Pediatrics Teaching Excellence Award as a resident at Jackson Memorial Hospital/University of Miami Miller School of Medicine, where she completed her pediatric residency and fellowship in Neonatal-Perinatal Medicine. Her clinical expertise and research interests include exploring optimal practices in newborn respiratory support and care, management of the most complex cases of Bronchopulmonary Dysplasia with focus on neurodevelopmental outcomes, and innovation in medical education. In addition to leading the NICU Pulmonary Taskforce, she also leads the NICU Multidisciplinary Tracheostomy Team. Dr. Machry is rated as an Advanced provider by MediFind in the treatment of Bronchopulmonary Dysplasia. Her top areas of expertise are Bronchopulmonary Dysplasia, Gastroesophageal Reflux in Infants, Premature Infant, and Gastroesophageal Reflux Disease (GERD).

Dr. Van Marter is the medical director of the Maternal, Fetal & Neonatal Institute and chief of Newborn Medicine at Johns Hopkins All Children’s Hospital. She joined the hospital staff in 2021. She also is a professor of Pediatrics in the Johns Hopkins University School of Medicine. Dr. Van Marter was previously an associate professor of Pediatrics at Harvard Medical School and the associate chair for Academic Affairs in the Department of Pediatric Newborn Medicine at Brigham & Women’s Hospital. Dr. Van Marter has held numerous clinical and administrative leadership roles, including as director of clinical research for the Harvard Academic Program in Newborn Medicine and, at BWH, vice chair of the Department of Pediatric Newborn Medicine and associate program director for NICU Research in the Center for Clinical Investigation. Dr. Van Marter was first a graduate of the Massachusetts General Hospital School of Nursing, and then earned her medical degree from the University of Pittsburgh School of Medicine. She completed a pediatric residency at Boston Children’s Hospital and a research fellowship in Neonatal-Perinatal Medicine with the Harvard Medical School Joint Program in Neonatology. She also earned a Master of Public Health in epidemiology from the Harvard School of Public Health. In addition to clinical instruction and didactic teaching at several Harvard hospitals over several decades, Dr. Van Marter has been an adviser to pediatric residents and a research mentor to neonatology fellows and junior faculty. At the national level, she is a past chair of the American Academy of Pediatrics Section on Neonatal-Perinatal Medicine, and was a founder and mentor for its Trainees and Early Career Neonatologists Group that has fostered leadership development of individuals at early stages of their neonatology careers. She was elected to the Society for Pediatric Research, the Perinatal Research Society, and the American Pediatric Society. Dr. Van Marter’s clinical research has focused on the epidemiology and treatment of bronchopulmonary dysplasia (BPD) and persistent pulmonary hypertension of the newborn (PPHN). Her work has contributed to the identification of several pregnancy-associated risk factors for PPHN and a greater understanding of clinical practices that may modify the risk for BPD in infants born before 29 weeks of gestation. She has been a principal investigator, site principal investigator and core director for numerous NIH and industry-funded studies. She has authored more than 70 papers published in peer-reviewed journals and has delivered many invited state-of-the-art and research talks at national and international conferences. Dr. Van Marter is rated as an Experienced provider by MediFind in the treatment of Bronchopulmonary Dysplasia. Her top areas of expertise are Premature Infant, Bronchopulmonary Dysplasia, Cerebral Hypoxia, and Epilepsy in Children.

Dr. Freire specializes in pediatric cardiology in the Johns Hopkins All Children’s Heart Institute, evaluating and treating patients with congenital heart disease starting in the womb. She also leads the hospital’s pediatric pulmonary hypertension program, managing patients with pulmonary hypertension from different causes. She is an assistant professor of pediatrics in the Johns Hopkins University School of Medicine. Dr. Freire has experience in advanced procedures, including transthoracic, transesophageal echocardiography and fetal echocardiography. She is actively involved in research and education as a member of the research council at Johns Hopkins All Children’s. She is a member of the Fetal Heart Society. Her research interests include fetal arrhythmia monitoring, fetal hemodynamics and outcomes of treatment of pulmonary hypertension. She has published multiple articles on pediatric echocardiography and fetal cardiology. Dr. Freire earned her medical degree from Central University of Ecuador. She completed her pediatric residency at Flushing Hospital Medical Center in New York and a fellowship in pediatric cardiology at Advocate Hope Children’s Hospital, Chicago. She held the title of assistant professor at the Cardinal Glennon Children’s Hospital in Missouri. She is a fellow of the American Society of Echocardiograpy, fellow of American College of Cardiology and member of the Pulmonary Hypertension Association Clinicians and Researchers (PHCR) professional network. Dr. Freire is rated as an Experienced provider by MediFind in the treatment of Bronchopulmonary Dysplasia. Her top areas of expertise are Ebstein's Anomaly, High Blood Pressure in Infants, Aortopulmonary Window, and Hypoplastic Left Heart Syndrome (HLHS).

Dr. McKay specializes in neonatology with the Johns Hopkins All Children’s Maternal, Fetal & Neonatal Institute. He joined the hospital staff in 1997. In addition to our main St. Petersburg, Fla., campus, Dr. McKay sees patients at Brandon Regional Hospital and Sarasota Memorial Hospital. Dr. McKay was named Johns Hopkins All Children’s Hospital physician of the year in the 2018 Johns Hopkins Medicine Clinical Excellence Awards. Dr. McKay earned his medical degree at the University of Cincinnati School of Medicine and completed his pediatric residency and fellowship at the University of Louisville. He is a member of the American Academy of Pediatrics, Pinellas County Medical Society and The Florida Society of Neonatologists. Dr. Mckay is rated as an Experienced provider by MediFind in the treatment of Bronchopulmonary Dysplasia. His top areas of expertise are Bronchopulmonary Dysplasia and Infant Respiratory Distress Syndrome.

Dr. Ortiz is a physician in the Sleep Center at Johns Hopkins All Children’s Hospital. He joined the medical staff in 2018. He sees patients at the main campus in St. Petersburg, Florida, as well as at Johns Hopkins All Children’s Outpatient Care, East Lake. Dr. Ortiz earned his medical degree from the University of Rochester. He completed his residency in internal medicine and pediatrics at the Charleston Area Medical Center. He also completed a fellowship in pediatric pulmonology at the Johns Hopkins University School of Medicine in Baltimore, Maryland. He also completed a fellowship in sleep medicine at the Children’s Hospital of Philadelphia and the Hospital of the University of Pennsylvania in Philadelphia. His clinical interests include narcolepsy, hypersomnia, obstructive sleep apnea, and skeletal dysplasias. His research interests include examining the interaction of sleep disorders on chronic pediatric diseases such bronchopulmonary dysphasia, asthma, and developmental delay. He has worked extensively in creating educational content for people with narcolepsy as well as advocating for patients with rare diseases. Recent News Articles and Media Coverage Back to school sleep routine, WTSP -TV (August 4, 2022) Sleep expert tackles back-to-school bedtime help, WTSP -TV (August 3, 2021) Melatonin overdoses in children increase over last 10 years, study finds, WTVT - TV (June 7, 2022) Melatonin poisonings skyrocket, WTVT - TV (July 7, 2022). Dr. Ortiz is rated as an Experienced provider by MediFind in the treatment of Bronchopulmonary Dysplasia. His top areas of expertise are Narcolepsy, Drowsiness, Excessive Daytime Sleepiness, and Obstructive Sleep Apnea.

Dr. Doshi specializes in neonatology at Johns Hopkins All Children’s. He sees patients at Sarasota Memorial Hospital, Sarasota Memorial – Venice and HCA Florida Brandon Hospital, through a collaboration with Johns Hopkins All Children’s. He joined the hospital staff in 2025. Dr. Doshi’s clinical and research interests focus on the long-term outcomes among extremely prematurely born patients by monitoring targeted oxygen saturation, nutritional support for optimal growth, and strategies to reduce bronchopulmonary dysplasia rates. He was previously a neonatologist at Golisano Children’s Hospital of Southwest Florida in Fort Myers. He earned his medical degree from Saurashtra University in Surendranagar, India. He completed a residency in pediatrics at Staten Island University Hospital, followed by a fellowship in neonatal-perinatal medicine at Cohen Children’s Medical Center. He also earned a Master of Public Health in epidemiology from Florida International University. He speaks English, Gujarati and Hindi. Dr. Doshi is rated as an Experienced provider by MediFind in the treatment of Bronchopulmonary Dysplasia. His top areas of expertise are Infantile Pneumothorax, Bilirubin Encephalopathy, Transient Familial Hyperbilirubinemia, Gastroschisis, and Gastrostomy.

Prem Fort is a Neonatologist in St Petersburg, Florida. Dr. Fort is rated as an Experienced provider by MediFind in the treatment of Bronchopulmonary Dysplasia. His top areas of expertise are Infantile Apnea, Infant Respiratory Distress Syndrome, Apnea of Prematurity, and Premature Infant.