US Digestive Health
Mark Johnston is a gastroenterologist who has worked at US Digestive Health since December 2005. Prior to that, Mark was a partner at Lancaster Gastroenterology Inc. until March 2024. Mark also served as Chief of Gastroenterology in the US Navy from 2003 to 2005. In addition, Mark worked as a physician for the US Congress from 1992 to 1993.
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US Digestive Health
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US Digestive Health works with world-class physicians around the Greater Philadelphia area, as well as Lancaster, Berks, and Carlisle counties, to provide all the backend services and operations management so the physicians can focus on their patients. As an empowering resource to our physician partners and a resource to them, allowing them to focus on compassionate and exceptional care to their patients, US Digestive Health is committed connecting communities to better digestive health by providing easy and convenient access to comprehensive gastroenterology services. By extending our network of locations and providers, we ensure that patients can be seen at the right time, in the right place, by the right provider. Our goal is to ensure that our physician partners can make diagnoses as quickly and accurately as possible in order to expedite treatment and reduce both pain and anxiety.