Dr. Matthew Sullivan obtained his B.S. in Biology from Juniata College and then received his medical degree from the Philadelphia College of Osteopathic Medicine.  He completed his Internal Medicine residency at Lehigh Valley Health Network before serving an additional year as Chief Medical Resident for the program.  He then remained at Lehigh Valley Health Network where he completed his fellowship in Gastroenterology.

Dr. Sullivan practices general gastroenterology with an interest in esophageal motility disorders.  He is a member of the American College of Gastroenterology, American Gastroenterological Association, and the American Society for Gastrointestinal Endoscopy.  He is currently board certified in Internal Medicine and Gastroenterology.