Hayat Mousa, M.D.


Gastroenterology, Hepatology and Nutrition


3020 Children's Way
MC 5030
San Diego, CA 92123


Gastroenterology, Hepatology and Nutrition


Rady Children's Specialists of San Diego

Medical Group / IPA

Rady Children's Specialists

Medical School

University of Damascus School of Medicine


Henry Ford Hospital Detroit


Childrens Hospital Pittsburgh

Board Certifications

Pediatric Gastroenterology, Pediatrics




Dr. Hayat Mousa is the clinical director of pediatric gastroenterology and the director of the NeuroGastroenterology and Motility Center at Rady Children's Hospital-San Diego. She is also a professor of pediatrics at UC San Diego School of Medicine.

Dr. Mousa is a national leader and world-renowned expert in pediatric gastrointestinal motility disorders. She was trained at Children's Hospital of Pittsburgh, with broad exposure to all gastrointestinal disorders including liver disease, small bowel transplantation and gastrointestinal motility disorders. Subsequently, she joined the GI group at Nationwide Children's Hospital in Columbus, Ohio, where she developed its motility center, served as the medical director for motility for 15 years, and served as the fellowship director of a GME-approved training program in pediatric motility disorders for 10 years.

Dr. Mousa's key interests include swallowing disorders, gastroparesis, gastric electric stimulation, constipation, cecostomy, sacral nerve stimulation, rumination, gastroesophageal reflux, Hirschsprung's disease, gastrointestinal motility diseases and functional disorders. She has special clinical expertise in managing patients in multidisciplinary settings and had an active role in developing both an aerodigestive and a colorectal center in former institutions.

Her research, which is widely published, is focused on chronic intestinal pseudoobstruction, pre- and post-transplantation, gastric accommodation and compliance after fundoplication in comparison to its baseline before the surgery, gastroesophageal reflux and its association with apnea & respiratory symptoms, and gastric pacing with its effect on gastric function and quality of life.

Dr. Mousa is an active member of various professional societies, including the American Neurogastrointestinal Motility Society, Society for Pediatric Research, NASPGHAN North American Society for Pediatric Gastroenterology, Hepatology and Nutrition, American Gastroenterology Association, and the Association of Gastrointestinal Motility Disorders (AGMD).

Among her honors and awards are the NASPGHAN Motility Prize, Nationwide Children Hospital Career Contribution Award and the NCH IMPACT Business Process Improvement Program Award.

She contributes regularly to national and international seminars, as well as post-graduate courses. Over the last few years, Dr. Mousa has developed special expertise in quality improvement.