Lusine Ambartsumyan, MD

Lusine Ambartsumyan, MD

Gastroenterology, Motility, Reconstructive Pelvic Medicine, Gastroenterology and Hepatology Research

On staff since August 2013

Children's Title: Director, Gastrointestinal Motility

Academic Title: Assistant Professor of Pediatrics

Research Center: Center for Clinical and Translational Research


  • Kathleen Clinton, WA 08.30.15

    Dr. Ambartsumyan demonstrates exemplary standards in her dedication to helping children digest their food and grow. My daughter has been below zero on the growth charts for all seven years of her life. We finally decided to have a g-tube placed, and the problems only worsened. Dr. Ambartsumyan and her team were steadfast in their determination to discover the problem and to correct the issue so my child would tolerate food and begin to grow. While our hospital stay was arduous, Dr. Ambartsumyan never gave up, and she encouraged me when I was struggling. My daughter has gained two pounds in the last two months, more growth than she ever has made. Thank you Dr. "A"; we are eternally grateful for all you do.

  • Amy Seattle, WA 07.02.15

    Our little guy had quite a few procedures and the one Dr. A had to administer was quite challenging for him. But Dr. A went the extra mile to help keep his spirits and the procedure going in a positive way. Also, very informative and personal approach to our family, really great team of people.


Board Certification(s)


Medical/Professional School

Drexel University College of Medicine, Philadelphia


Pediatrics, St. Christopher's Hospital for Children, Philadelphia


Pediatric Gastroenterology, Boston Children's Hospital, Boston

Clinical Interests

Mechanisms of fecal continence and defecation abnormalities in children with anorectal malformations, spinal cord dysraphism, intractable constipation, and post surgical Hirschsprung's Disease. Diagnosis and management of gastroparesis, pseudo-obstruction, achalasia, and aerodigestive disorders.

Research Description

Dr. Ambartsumyan investigates the pathophysiology and management of defecation disorders in children. Her primary research involves the study of mechanisms of functional and organic fecal incontinence, spinal cord modulation of anorectal function, and the physiological relationship between the anorectum and the bladder in children with and without spinal cord malformations.