Medical School

  • University of Missouri at Kansas City , 1984 , Kansas City , Missouri


  • Bridgeport Hospital , 1988 , Bridgeport , Connecticut


  • Yale Medical School , 1990 , New Haven , Connecticut

Philosophy of Care

It became clear that children with developmental problems were often suffering physical distress that they were unable to verbalize and problem behaviors often seen in these children were, at times, set off by medical issues. I have focused on the care of these children for over 20 years as well as expanding education about these issues in the medical community.


I am a general pediatric gastroenterologist focused on the care of children with autism and developmental problems. These problems include similar problems seen in general pediatric GI care but recognizing these problems in children with developmental problems is often difficult. This has been my focus.


  • American Board of Pediatrics, Pediatric Gastroenterology


Publications powered by Harvard Catalyst Profiles

  1. Development of a Brief Parent-Report Screen for Common Gastrointestinal Disorders in Autism Spectrum Disorder. J Autism Dev Disord. 2019 Jan; 49(1):349-362. View abstract
  2. Age-Dependent Changes in the Propofol-Induced Electroencephalogram in Children With Autism Spectrum Disorder. Front Syst Neurosci. 2018; 12:23. View abstract
  3. Mitochondrial dysfunction in the gastrointestinal mucosa of children with autism: A blinded case-control study. PLoS One. 2017; 12(10):e0186377. View abstract
  4. Analysis of the Duodenal Microbiome in Autistic Individuals: Association With Carbohydrate Digestion. J Pediatr Gastroenterol Nutr. 2017 05; 64(5):e110-e116. View abstract
  5. Blood-brain barrier and intestinal epithelial barrier alterations in autism spectrum disorders. Mol Autism. 2016; 7:49. View abstract
  6. Evaluation of Intestinal Function in Children With Autism and Gastrointestinal Symptoms. J Pediatr Gastroenterol Nutr. 2016 05; 62(5):687-91. View abstract
  7. Early Identification of Autism Spectrum Disorder: Recommendations for Practice and Research. Pediatrics. 2015 Oct; 136 Suppl 1:S10-40. View abstract
  8. Early Screening of Autism Spectrum Disorder: Recommendations for Practice and Research. Pediatrics. 2015 Oct; 136 Suppl 1:S41-59. View abstract
  9. Early Identification and Interventions for Autism Spectrum Disorder: Executive Summary. Pediatrics. 2015 Oct; 136 Suppl 1:S1-9. View abstract
  10. Early Intervention for Children With Autism Spectrum Disorder Under 3 Years of Age: Recommendations for Practice and Research. Pediatrics. 2015 Oct; 136 Suppl 1:S60-81. View abstract
  11. Potential Etiologic Factors of Microbiome Disruption in Autism. Clin Ther. 2015 May 01; 37(5):976-83. View abstract
  12. The relationship of autism and gluten. Clin Ther. 2013 May; 35(5):578-83. View abstract
  13. Impaired carbohydrate digestion and transport and mucosal dysbiosis in the intestines of children with autism and gastrointestinal disturbances. PLoS One. 2011; 6(9):e24585. View abstract
  14. Intestinal disaccharidase activity in patients with autism: effect of age, gender, and intestinal inflammation. Autism. 2011 May; 15(3):285-94. View abstract
  15. Recommendations for evaluation and treatment of common gastrointestinal problems in children with ASDs. Pediatrics. 2010 Jan; 125 Suppl 1:S19-29. View abstract
  16. Evaluation, diagnosis, and treatment of gastrointestinal disorders in individuals with ASDs: a consensus report. Pediatrics. 2010 Jan; 125 Suppl 1:S1-18. View abstract
  17. Distinct genetic risk based on association of MET in families with co-occurring autism and gastrointestinal conditions. Pediatrics. 2009 Mar; 123(3):1018-24. View abstract
  18. Lack of association between measles virus vaccine and autism with enteropathy: a case-control study. PLoS One. 2008 Sep 04; 3(9):e3140. View abstract
  19. Glucocorticoid responsiveness in developing human intestine: possible role in prevention of necrotizing enterocolitis. Am J Physiol Gastrointest Liver Physiol. 2005 Jan; 288(1):G85-92. View abstract
  20. Abnormalities in gastrointestinal motility are associated with diseases of oxidative phosphorylation in children. Am J Gastroenterol. 2003 Apr; 98(4):871-7. View abstract
  21. Treatment of recurrent Clostridium difficile colitis with Lactobacillus GG. J Pediatr Gastroenterol Nutr. 1995 Aug; 21(2):224-6. View abstract
  22. Intestinal motility and jejunal feeding in children with chronic intestinal pseudo-obstruction. Gastroenterology. 1995 May; 108(5):1379-85. View abstract
  23. Immunoglobulin studies in children with inflammatory bowel disease. Ann Allergy. 1994 Jun; 72(6):525-7. View abstract
  24. Abnormal cholesterol metabolism in the Smith-Lemli-Opitz syndrome: report of clinical and biochemical findings in four patients and treatment in one patient. Am J Med Genet. 1994 May 01; 50(4):347-52. View abstract
  25. Tetracycline-induced esophagitis in adolescent patients. J Pediatr. 1992 Jan; 120(1):144-5. View abstract