Dr. Marvin Natowicz, MD, PhD, is a medical geneticist and clinical pathologist. Dr. Natowicz graduated summa cum laude with a degree in biology from Washington University. He then obtained his medical degree and doctorate in cellular and developmental biology from Washington University School of Medicine. He has been on the faculty of Harvard Medical School, the Massachusetts General Hospital, and Brandeis University and is currently a staff member of the Cleveland Clinic and Professor of Pathology at the Cleveland Clinic Lerner College of Medicine of Case Western Reserve University. Dr. Natowicz’s clinical work includes the evaluation and care of persons with neurodevelopmental disability; his research work includes studies on the pathobiology of autism spectrum disorder and the clinical chemistry of genetic metabolic disorders. Learn more about Dr. Natowicz’s research at PubMed.

Timothy M. Buie, M.D. is the Co-Director of the GI Autism Clinic and a Senior Physician in the Pediatric Gastroenterology, Nutrition and Hepatology Department at Boston Children’s Hospital. Prior to that position, he worked in the pediatric gastroenterology department for 18 years at Massachusetts General Hospital for Children based in Boston, MA. He also served as the Director of Gastrointestinal and Nutrition at Massachusetts General Hospital’s Lurie Center for Autism. Dr. Buie is an Assistant Professor of Pediatrics at Harvard Medical School. He completed his training in Pediatric Gastroenterology at Yale University School of Medicine.

In addition to managing a large patient population, Dr. Buie has published a variety of papers and book chapters characterizing gastrointestinal problems in children with autism and developmental disorders including clinical presentation and medical findings. His work includes translational research of the intestinal microbiome and the metabolic effects of the microbiome in a variety of conditions in pediatrics including autism and inflammatory disease.

Dr. Buie has been featured in The New York Times, The Wall Street Journal on PBS, the BBC and media worldwide talking about gastrointestinal symptoms, diet and nutrition, and the microbiome differences seen in individuals with autism. He is currently featured on AutismSpeaks.org and YouTube in an online medical video series entitled “Office Hours with GI Specialist Tim Buie” that he developed and co-produced with Autism Speaks. He has also been a contributor to the advice column “Food for Thought” on the Autism Speaks website.

​Dr. Buie has been honored for his work in medicine over the years and in June 2021 was awarded 2019-2020 Attending of the Year by the Harvard Medical School Fellowship/Pediatric Gastroenterology and Nutrition Department at Boston Children’s Hospital. He is the recipient of the Margaret Bauman Award for Autism Care presented in May 2017, which he also received in 2010. He was named Professional of the Year by the Autism Society of America in 2010 and received the Partners in Excellence Award in 2014. Dr. Buie received the University of Missouri-Kansas City School of Medicine’s Take Wing Award in 2015 honoring his career achievements and professional excellence.

​Dr. Buie serves on the Interagency Coordinating Committee for Autism advisory board for the National Institutes of Health. He also serves on the Harvard Medical School TEAMS clinical advisory board (Targeted Education Autism for Management across Medical Specialties) aimed at teaching all Harvard clinical providers autism management strategies.

To view his online profile on the Boston Children’s Hospital website:
www.childrenshospital.org/directory/physicians/b/timothy-buie