Marissa J. DeFreitas, M.D.
- Fax: 305-585-7025
- American Board of Pediatrics
- American Board of Pediatrics-Pediatric Nephrology
- Pediatric Nephrology (Pediatrics)
- Assistant Professor of Clinical Pediatrics
- Pediatric Nephrologist, Kidney Transplant Program
- Risk of future kidney and cardiovascular disease among preterm infants and other neonatal groups
- Urinary biomarkers as predictors of kidney injury
- End-stage renal disease in children
- Congenital anomalies of the kidneys and urinary tract
Medicine- Pediatrics Teaching Attending Of The Year
2015 Pediatric Nephrology Fellowship
University of Miami/Jackson Memorial Hospital
2012 Pediatrics Residency
Johns Hopkins University
University of Chicago Pritzker School of Medicine
2004 B.A. Biological Sciences
University of Chicago
- Assessment of Worldwide Acute Kidney Injury Epidemiology in Neonates: Design of a Retrospective Cohort Study. Front Pediatr. 2016 Jul 19;4:68. doi: 10.3389/fped.2016.00068
- Longitudinal patterns of urine biomarkers in infants across gestational ages. Pediatr Nephrol. 2016 Jul;31(7):1179-88. doi: 10.1007/s00467-016-3327-3
- Neonatal Kidney Size and Function in Preterm Infants: What Is a True Estimate of Glomerular Filtration Rate? J Pediatr 2014 May;164(5):1026-1031. PMID: 24607244
- Cardio-renal consequences of low birth weight and preterm birth. Prog in Pediat Cardiol http://dx.doi.org/10.1016/j.ppedcard.2016.01.012
- Capillary rarefaction: an early marker of microvascular disease in young hemodialysis patients. Clin Kidney J 2014 Dec;7(6):569-74. PMID: 25859374
- Umbilical artery histomorphometry: a link between the intrauterine environment and kidney development. J Dev Orig Health Dis. 2017 Mar 6:1-8. doi: 10.1017/S2040174417000113.
- Assessment of kidney function in preterm infants: lifelong implications. Pediatr Nephrol. 2016 Dec;31(12):2213-2222. Epub 2016 Feb 4.
Dr. Marissa Janel DeFreitas is an Assistant Professor of Clinical Pediatrics in the Division of Pediatric Nephrology, of the Department of Pediatrics. She is certified by the American Board of Pediatrics in both Pediatrics and Pediatric Nephrology.
She received her undergraduate and medical degrees from The University of Chicago in Chicago, Illinois. She completed her residency training in Pediatrics at Johns Hopkins University in Baltimore, Maryland followed by fellowship training in Pediatric Nephrology at Jackson Memorial Hospital/Holtz Children's Hospital, in affiliation with the University of Miami Miller School of Medicine.
In addition to her clinical practice, she participates in research and fellowship education of the Division of Pediatric Nephrology and is involved in several aspects of pediatric residency education. She is also actively engaged in seeing pediatric kidney transplant patients before and after transplant within the Miami Transplant Institute.
Her engagement beyond clinical practice includes being a faculty speaker and moderator for the Miami Pediatric Nephrology Seminar & Workshop in Pediatric Critical Care Nephrology. Additionally, she participates in clinical trials and multicenter collaborative research for pediatric patients with kidney disease, including the international Neonatal Kidney Collaborative.
Her research focus centers on understanding the risk of kidney and cardiovascular disease associated with certain neonatal groups such as preterm infants, twins and multiple births, and those born exposed to pre-eclampsia and/or with intrauterine growth restriction.