About Katherine Olshan, MD

Katherine Olshan, MD, is an attending physician who treats patients in the MassGeneral Hospital for Children Pediatric Gastroenterology & Nutrition unit and the Center for Celiac Research and Treatment at MassGeneral for Children. She sees pediatric patients with all gastrointestinal disorders, and specializes in the care of pediatric patients with celiac disease. 

In addition to her medical degree from Medical College of Wisconsin, Dr. Olshan completed her residency in pediatric medicine at the University of Massachusetts Medical School/UMass Memorial Medical Center. She also completed her fellowship in Pediatric Gastroenterology at MassGeneral for Children.

Clinical Interests:



Mass General for Children: Pediatrics Gastrointestinal & Nutrition
52 Second Ave.
Suite 340
Waltham, MA 02451
Phone: 781-466-8967

Mass General for Children at Southern New Hampshire Medical Center
8 Prospect St.
1st Floor
Nashua, NH 03060
Phone: 603-577-2000
Phone: 603-577-5360

Medical Education

  • MD, Medical College of Wisconsin
  • Residency, UMASS Medical Center
  • Fellowship, Massachusetts General Hospital

American Board Certifications

  • Pediatric Gastroenterology, American Board of Pediatrics
  • Pediatrics, American Board of Pediatrics

Accepted Insurance Plans

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.

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