Harvard Neonatal-Perinatal Fellowship Training Program | Current Fellows

First-year Fellows

Nikita Kalluri

Dr. Kalluri completed her pediatric residency in the Boston Combined Residency Program, Urban Health & Advocacy Track. She received her undergraduate degree in Biomedical Engineering from Tufts University, and her medical degree from Boston University. During residency, she examined the role of maternal primary language on preterm infant outcomes and found that non-English language status is associated with increased infant morbidities; this work was accepted to Pediatric Academic Societies in 2020. She was awarded an American Academy of Pediatrics research grant to examine the relationship between language status and parental participation in NICU care. She would like to continue pursuing clinical research and quality improvement training, to understand and create interventions to reduce disparities, address social determinants of health, and empower underserved families.

Samuel Loren

Dr. Loren completed his pediatric residency at University of Washington/Seattle Children’s Hospital. He received his undergraduate degree in Organismic and Evolutionary Biology from Harvard University, and his medical degree from the University of Chicago. During residency, he participated in research on post-partum depression in the era of COVID-19, collecting data regarding rates of depression and social outcomes after NICU stays during the COVID-19 epidemic. He is interested in optimizing lung function and identifying the best nutritional strategies for growth, as well as advocating for appropriate dissemination of evidence-based strategies.

Puneet Sharma

Dr. Sharma completed his pediatric residency at Cincinnati Children’s Hospital Medical Center. He received his undergraduate degree in Chemistry from Northwestern University, and his medical degree from the University of Cincinnati. During his residency, his primary research focus was the identification of potential antecedent perinatal and neonatal clinical factors associated with the presence of diffuse white matter abnormality in term-adjusted MRI. He was involved in an NIH-funded study to identify biomarkers on MR imaging that may better predict neurodevelopmental outcomes of preterm infants. He is interested in the identification and utilization of biomarkers to predict long-term outcomes.

Rachel Stadelmaier

Dr. Stadelmaier completed her pediatric residency in the Boston Combined Residency Program. She received her undergraduate degree in Ecology and Evolutionary Biology from the University of Michigan, and her medical degree from Albert Einstein College of Medicine. During residency, she worked on a project that involved analyzing a large cohort of infants for whom genetic testing was sent in order to identify patterns in testing strategy and diagnostic yield. She received a Fred Lovejoy House Officer Research Award from Boston Children’s Hospital in support of this project, and her abstract describing the preliminary results was accepted at the 2020 PAS meeting and the 2020 NEPS meeting. During fellowship, she would like to study inequalities in genetic testing and diagnosis.

Alyssa Thomas

Dr. Thomas completed her pediatric residency at Children’s Hospital of Philadelphia. She received her undergraduate degree in Comparative Literature (English and Spanish) from Brown University, and her medical degree from Yale University. Her research during residency looked at the first minutes after birth for newborns with cyanotic congenital heart disease. By characterizing the transitional physiology of these newborns and the resuscitative measures they required, she aimed to deepen understanding of how to manage these challenging deliveries. The abstract for this work was accepted to both the PAS and ESPR conferences. She was a co-leader of Project SPHERE, a resident-led QI project aimed at streamlining and improving family and physician satisfaction with the rounding model by increasing resident teaching at the bedside. During fellowship, she plans to pursue clinical research on infants with congenital anomalies to improve outcomes.

Amanda Winkler

Dr. Winkler completed her pediatric residency at Massachusetts General Hospital for Children. She received her undergraduate degree in Psychology from the University of Massachusetts Amherst, and her medical degree from the University of Massachusetts. During her residency, she generated the standard operating procedure (SOP) for the construction, maintenance, and trouble-shooting of a low-cost, sustainable bubble CPAP built from local materials for use in low-resource settings in Uganda. She also participated in a research project with a multidisciplinary team extrapolating the effect of proning in adults to determine efficacy in improving bronchiolitis outcomes in pediatric patients. She would like to continue to work on the development and distribution of affordable medical technologies to resource-limited areas of the world, as well as evaluating the safety and utility of new devices in the care of neonates.

Second-year Fellows


Alissa D’Gama

Dr. D’Gama completed her pediatric residency training in the Boston Combined Residency Program on the Accelerated Research Pathway. She received her undergraduate, medical, and doctorate degrees from Harvard University. She conducted her PhD research with Dr. Christopher Walsh, investigating germline and somatic mutations in neurodevelopmental disorders. Dr. D’Gama is interested in research in developmental neuroscience and translational genomics, and is co-mentored by Drs. Annapurna Poduri and Timothy Yu.

Alejandro Frade Garcia

Dr. Frade Garcia served as chief resident in the Nicklaus Children’s Hospital pediatric residency program. He received his medical degree from Anahuac University in Mexico. He is currently pursuing Genomics research in the Agrawal Lab. Alejandro also serves as the AAP TECaN delegate for the fellowship program and is a member of the DEI committee. He continues to work on advocacy projects, including a Global Health effort in Chiapas Mexico with Dr. Hansen.

Genevieve Guyol

Dr. Guyol completed her pediatric residency in the Urban Health and Advocacy Track of the Boston Combined Residency Program. She holds an undergraduate degree in History and Spanish from Middlebury College, a masters in Special Education from National-Louis University, and a medical degree from Boston University. Prior to medical school, she taught early elementary special education as a Teach for America corps member in Chicago. Under the mentorship of Drs. Meg Parker and Jonathan Litt, she is conducting her fellowship research on medical, social, and environmental factors affecting school readiness among NICU graduates. For this work, she received the AAP Marshall Klaus Perinatal Research Award in Health Services Research. She hopes to use this research to guide development of interventions that will improve educational equity for preterm infants and is also serving as an advocacy and public policy fellow in the Boston Children’s Office of Government Relations during this academic year.

Jenna Katz

Dr. Katz completed her pediatric residency in the Boston Combined Residency Program. She received her bachelor’s degree in Biological Basis of Behavior from the University of Pennsylvania and her medical degree from Stanford University. During medical school and residency, she conducted research with the Fetal Center at Lucile Packard Children’s Hospital. Specifically, she con- ducted a retrospective chart review to determine the added value of fetal MRI for identifying additional central nervous system (CNS) and non-CNS findings, and for informing prenatal and post- natal clinical decisions in pregnancies complicated by prenatally diagnosed ventriculomegaly. She presented this work at PAS and is first author on a publication in the Journal of Perinatology. She is currently working to put together a project on neonatal neurocritical care and is interested in pursuing clinical research during fellowship.

Stephanie Tung

Dr. Tung completed her pediatric residency training at Johns Hopkins. She received her bachelor’s degree in Immunology and master’s degree in Medical Biophysics from the University of Toronto. She obtained her medical degree from the Royal College of Surgeons in Ireland. During residency, she assisted on a project to develop a new standardized definition of apnea and bradycardia events and monitoring guidelines for the NICU unit. She was also involved in a study investigating the impact of the care pacing model on overall patient outcomes with hopes of implementing standardized care plans. She is interested in pursuing pulmonary basic science research during her fellowship.

Erika Yazawa

Dr. Yazawa completed her pediatric residency training at Columbia University. She received her bachelor’s degree in hiology and Hispanic studies from Boston College, and her medical degree from Boston University. Her residency research examined outcomes (safety and efficacy) in neonatal patients who received inhaled iloprost for the acute management of severe pulmonary hypertension. Under the mentorship of Dr. William Pu, she is studying gene therapy for inherited cardiac disease by utilizing adeno-associated virus (AAV) vectors as a platform for gene therapy delivery. In her free time, she enjoys spending time with her husband and their goldendoodle puppy!

Third-year Fellows


Madeline Keyes

Dr. Keyes completed her pediatric residency training at Massachusetts General Hospital where she also served as chief resident. She obtained her undergraduate degree in Biology from Wheaton College and completed one year as a research assistant in Denmark prior to obtaining her MD from Dartmouth University. She is interested in clinical research and quality improvement.

Brooke Krbec

Dr. Krbec completed her residency training at Johns Hopkins University in Baltimore. She obtained her undergraduate degree in Neuroscience from Tulane University and a Master’s in Cell and Molecular Biology from the University of North Carolina. She obtained her medical degree from Lake Erie College of Osteopathic Medicine. She is interested in clinical and translational research.

Matthew Lin

Dr. Lin completed his undergraduate studies at Brown University, where he obtained a Bachelor of Science in Human Biology. He obtained his MD from the University of Vermont and completed his pediatric residency training at New York University. He is concurrently completing a fellowship in bioethics through the Harvard Medical School Center for Bioethics and is a trainee member of the Boston Children’s Ethics Advisory Committee. He has a clinical and scholarly interest in questions at the intersection of bioethics and palliative care.

Tierney Morrison

Dr. Morrison completed her pediatric residency training at Cincinnati Children’s Hospital, where she also served as chief resident. She obtained her undergraduate degree in Public Health and her medical degree from George Washington University. She has a clinical and scholarly interest in addiction medicine as it pertains to maternal fetal medicine and neonatology, and is currently working on a project that explores chronic stress as a mechanism by which neurobehavioral dysregulation may occur in infants with prenatal opioid exposure. In her free time, she enjoys spending time with her husband and 2-year-old daughter and trying new restaurants!

Margaret Ong

Dr. Ong completed her pediatric residency training at University of California Los Angeles. She obtained her undergraduate degree in Physiological Science and her medical degree from University of California Los Angeles. She is interested in clinical research with a focus on nutrition and neurodevelopment.

Kristen Santoro

Dr. Santoro graduated with a Bachelor’s and Master’s in Neuroscience from Tulane University and obtained her MD from Louisiana State University, New Orleans. She completed her pediatric residency training at New York Presbyterian Hospital, Columbia University, in New York. In regards to her research, she is a member of the Martin-Freedman lab working under the mentorship of Dr. Camilia Martin. She is currently working on a project to better understand fatty acid metabolism in the neonate and its role in inflammation. In her free time, she enjoys running along the Charles River Esplanade and making homemade pasta.