Shopping CartYour Cart is EmptyQuantity: RemoveSubtotalTaxesShippingTotalThere was an error with PayPalClick here to try againThank you for your business!You should be receiving an order confirmation from Paypal shortly.Exit Shopping Cart Mark Detweiler MD Londonderry Gastroenterology Healing Beyond the Symptoms About Dr. Detweiler Education : Fellowship - University Of Utah Medical Center Internal Medicine Residency -University of Vermont Medical Center Medical School - The College of Medicine at Penn State University MD Undergraduate - Lehigh University BS Chemistry Interests: Hiking with his dogs Laci and Willow, Downhill and Cross Country Skiing, Snow shoeing, Reading, and anything Gadgety or Techy. Food! Especially Mexican... Teaching about anything I know. Family - Married 42 years, 3 grown children and two mutts. Lives in Manchester NH Toggle NavigationHomeAbout UsContact UsLocation & HoursFormsHomeAbout UsContact UsLocation & HoursForms / PreviousNextPausePlayClose