Hanine Hajj, MD

Staff Physician

Instructor in Pediatrics, Harvard Medical School

    Contact: 617-919-6972
  • Fax: 617-730-0486

Medical Services


  • Neonatalogy


  • Newborn Medicine


  • English
  • French
  • Arabic
To schedule an appointment: Call 617-919-6972
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Philosophy of Care 

In the Boston Children’s Hospital (BCH) Neonatal Intensive Care Unit (NICU) our philosophy is to ensure that every patient receives the best care for the best possible outcomes. This requires a team based approach with all members being essential:

Families: We practice family-integrated care; we encourage families to be at the center of all we do, understanding and participating in the care of their baby.

Doctors: At BCH we have an enormous breadth and depth of world-class medical and surgical subspecialists who cover all aspects of pediatric medicine and who are continuously innovating new diagnostics and novel therapies to treat newborn diseases. The treatment of each patient is coordinated by our attending neonatologists.

Nurses: We have highly experienced neonatal nurses and nurse practitioners who devote themselves to the bedside care of babies and their families, working in a primary team model to promote consistency. We are the only NICU in the country to have received the Gold Level Beacon award, a testimony to the extraordinary performance of our nurses.

Ancillary staff: this includes respiratory therapists, nutritionists, lactation consultants, pharmacists, physical and occupational therapists, social workers and interpreters who all work with us to meet our patients’ needs.

Experience and Education


Medical School

St. Joseph’s University, 2008

Beirut, Lebanon


Hotel-Dieu de France University Hospital, 2009

Beirut, Lebanon


University of Iowa Hospitals and Clinics, 2012

Iowa City, IA


Harvard Neonatal-Perinatal Medicine Fellowship Training Program, 2015

Boston, MA

Professional History

My research interests focus on epigenetic regulation of fetal growth and early-life epigenetic programming of the risk for later life diseases. Evidence from imprinting disorders suggests that epigenetic mechanisms play a major role in fetal growth, which in turns is a major determinant of the risk for later life diseases such as obesity and cardiometabolic diseases. Under the mentorship of Dr. Andrea Baccarelli, I studied the associations of birth weight and cord blood DNA methylation in a large birth cohort based in Massachusetts. I recently joined the Greer Lab with an interest in imprinting disorders. My current research focuses on characterizing the epigenomic landscape of the Prader-Willi/Angelman syndrome locus in mouse models, and further understanding the mechanisms regulating the gene silencing or expression in a parent-of-origin specific manner. 
In 2015, I completed a fellowship in Neonatology at the Harvard Neonatal-Perinatal Fellowship Training Program. I was recently appointed as a core faculty at Boston Children’s Hospital NICU. As a physician-scientist, I particularly enjoy teaching and educating fellows, residents, and medical students, and post-docs both clinically, through my clinical rotations, and scientifically, through my research work in the Greer’s Lab. 

To schedule an appointment: Call 617-919-6972


Boston Children’s is so much more than a hospital—it’s a community of researchers, clinicians, administrators, support staff, innovators, teachers, patients and families, all working together to make the impossible possible. ”
- Sandra L. Fenwick, President and CEO

Boston Children's Hospital
300 Longwood Avenue, Boston, MA 02115
For Patients: 617-355-6000
For Referring Providers: 844-BCH-PEDS | 844-224-7337