MaryStuart Deal Seifarth, MSN, RN, CRNP, NP-C Gastroenterologist (Stomach & Bowel Specialist), Hepatologist (Liver, Gallbladder & Pancreas) (717) 765-3648 https://www.doctor.com/Dr-MaryStuart-Seifarth Waynesboro PA 17268 501 East Main Street https://a.doctor.com/img?p=providers/435847-MaryStuart_Seifarth.jpg&w=200 MaryStuart Deal Seifarth, MSN, RN, CRNP, NP-C is a Gastroenterologist (Stomach & Bowel Specialist) - General, Hepatologist (Liver, Gallbladder & Pancreas) - General practicing in Waynesboro, PA. 435847-MaryStuart_Seifarth.jpg