Medical School

  • American University of Beirut , 1981 , Beirut , Lebanon


  • American University of Beirut , 1986 , Beirut , Lebanon


  • American University of Beirut , 1983 , Beirut , Lebanon


  • Boston University, Boston City Hospital , 1989 , Boston , MA


  • Tufts University, New England Medical Center , 1986 , Boston , MA

Philosophy of Care

I became interested in the biological sciences at early stage.  During my college years, I realized that my true passion was in applying this knowledge into all aspects of patient care, both research and practice.  This led me to enter the field of medicine.

My philosophy in practicing medicine is to treat all patients and their families with respect, and empower them to be actively involved in their own care and the process of decision making. My basic principle is to treat patients and families as I would treat my own.  This shapes and influences my decisions in patient care.


At the onset of his career as a Pediatric Gastroenterologist, Dr. Mobassaleh’s focus was on basic research in the field of pathogenesis of Shigella Diarrhea and the developmental regulation of the Shiga toxin receptors.  He was funded through the National Institutes of Health to conduct this research. Dr. Mobassaleh truly enjoyed his time in the laboratory and appreciated the effects of laboratory research on the advancement of human health.  However, with time, he realized that his true interests were in the fields of direct patient care, teaching students, both residents and fellows, and the development of outreach programs.  Dr. Mobassaleh’s current focus is in those areas and he currently holds a particular role in the field of community outreach and community-physician relations.  His goals focus on collaboration with primary care physicians in order to bring subspecialty care plans into the community and allow patients easy and timely access to such care.


  • American Board of Pediatrics, Pediatric Gastroenterology


Publications powered by Harvard Catalyst Profiles

  1. Strauss RS, Calenda KA, Dayal Y, Mobassaleh M. Histological esophagitis: clinical and histological response to omeprazole in children. Dig Dis Sci. 1999 Jan; 44(1):134-9. View abstract
  2. Elias ER, Mobassaleh M, Hajra AK, Moser AB. Developmental delay and growth failure caused by a peroxisomal disorder, dihydroxyacetonephosphate acyltransferase (DHAP-AT) deficiency. Am J Med Genet. 1998 Nov 16; 80(3):223-6. View abstract
  3. Hill SL, Evangelista JK, Pizzi AM, Mobassaleh M, Fulton DR, Berul CI. Proarrhythmia associated with cisapride in children. Pediatrics. 1998 Jun; 101(6):1053-6. View abstract
  4. Jacewicz MS, Acheson DW, Mobassaleh M, Donohue-Rolfe A, Balasubramanian KA, Keusch GT. Maturational regulation of globotriaosylceramide, the Shiga-like toxin 1 receptor, in cultured human gut epithelial cells. J Clin Invest. 1995 Sep; 96(3):1328-35. View abstract
  5. Mobassaleh M, Koul O, Mishra K, McCluer RH, Keusch GT. Developmentally regulated Gb3 galactosyltransferase and alpha-galactosidase determine Shiga toxin receptors in intestine. Am J Physiol. 1994 Oct; 267(4 Pt 1):G618-24. View abstract
  6. Jacewicz MS, Mobassaleh M, Gross SK, Balasubramanian KA, Daniel PF, Raghavan S, McCluer RH, Keusch GT. Pathogenesis of Shigella diarrhea: XVII. A mammalian cell membrane glycolipid, Gb3, is required but not sufficient to confer sensitivity to Shiga toxin. J Infect Dis. 1994 Mar; 169(3):538-46. View abstract
  7. Mobassaleh M, Mishra K, Keusch GT. A quantitative immunostaining method for the measurement of UDP-galactose:lactosylceramide galactosyltransferase for the synthesis of globotriaosylceramide in rabbit small intestine and HeLa cells. Anal Biochem. 1993 Oct; 214(1):295-300. View abstract
  8. Lambert J, Mobassaleh M, Grand RJ. Efficacy of cimetidine for gastric acid suppression in pediatric patients. J Pediatr. 1992 Mar; 120(3):474-8. View abstract
  9. Keusch GT, Jacewicz M, Mobassaleh M, Donohue-Rolfe A. Shiga toxin: intestinal cell receptors and pathophysiology of enterotoxic effects. Rev Infect Dis. 1991 Mar-Apr; 13 Suppl 4:S304-10. View abstract
  10. Mobassaleh M, Gross SK, McCluer RH, Donohue-Rolfe A, Keusch GT. Quantitation of the rabbit intestinal glycolipid receptor for Shiga toxin. Further evidence for the developmental regulation of globotriaosylceramide in microvillus membranes. Gastroenterology. 1989 Aug; 97(2):384-91. View abstract
  11. Mobassaleh M, Donohue-Rolfe A, Jacewicz M, Grand RJ, Keusch GT. Pathogenesis of shigella diarrhea: evidence for a developmentally regulated glycolipid receptor for shigella toxin involved in the fluid secretory response of rabbit small intestine. J Infect Dis. 1988 May; 157(5):1023-31. View abstract
  12. Fuchs G, Mobassaleh M, Donohue-Rolfe A, Montgomery RK, Grand RJ, Keusch GT. Pathogenesis of Shigella diarrhea: rabbit intestinal cell microvillus membrane binding site for Shigella toxin. Infect Immun. 1986 Aug; 53(2):372-7. View abstract
  13. Mobassaleh M, Montgomery RK, Biller JA, Grand RJ. Development of carbohydrate absorption in the fetus and neonate. Pediatrics. 1985 Jan; 75(1 Pt 2):160-6. View abstract