Marina Santos Santos Oren, M.D.

Marina Santos Santos Oren, M.D.

  • Pediatrics - Neonatal-Perinatal
  • Respiratory care of newborn infants
  • Invasive and noninvasive mechanical ventilation


Marina Santos Oren, M.D., is an Assistant Professor in the Department of Pediatrics at UT Southwestern Medical Center. She specializes in respiratory care of newborn infants, invasive and noninvasive mechanical ventilation, and patent ductus arteriosus.

Dr. Oren earned her medical degree at Universidade do Estado do Pará in Belém, Brazil. She completed a residency in pediatrics and a fellowship in neonatology at the University of São Paulo, where she served as Chief Resident. She also completed a fellowship in neonatal-perinatal medicine at the University of New Mexico and a residency in pediatrics at Tufts Medical Center in Boston, Massachusetts.

Certified by the American Board of Pediatrics, she joined the UT Southwestern faculty in 2022.

Dr. Oren is a member of the American Academy of Pediatrics, the American Medical Association, the Brazilian Society of Pediatrics, and the Society for Pediatric Research.

She has delivered numerous presentations and published several academic articles related to her areas of expertise.

In 2021, she received the Clinician’s Clinician Award from Tufts Children’s Hospital.

Personal Note

Dr. Oren writes, “Being a neonatologist is getting to celebrate even the smallest changes with our patients and their wonderful families. It is one of life's most fulfilling experiences to be able to send home a tiny warrior who could fit in the palm of your hand when they were born. It is an honor to care for these babies and their amazing parents.”

Education & Training
  • Residency - Tufts Medical Center (2019-2021), Pediatrics
  • Fellowship - University of New Mexico School of Medicine (2016-2019), Neonatal-perinatal Medicine
  • Medical School - Universidade Estadual do Para, Brazil (2003-2008)
Professional Associations & Affiliations
  • American Academy of Pediatrics
  • American Medical Association
  • Brazilian Society of Pediatrics
  • Society for Pediatric Research
Honors & Awards
  • Clinician’s Clinician Award 2021, Tufts Children’s Hospital in Boston, Massachusetts
  • Best Resident Research Award 2021, Tufts Children’s Hospital Pediatric Research Day 2021
  • Travel Award 2018, Pediatric Academic Societies Meeting in Toronto, Canada
  • Travel Award 2018, American Academy of Pediatrics District VIII on Neonatal Perinatal Medicine in Seattle, Washington
Books & Publications

Clinical Focus

  • Respiratory care of newborn infants
  • Invasive and noninvasive mechanical ventilation
  • Patent ductus arteriosus

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