S. Marsh Willis, Jr., M.D. earned his undergraduate degree at Clemson University.
He obtained his Medical Degree in Atlanta at Emory University School of Medicine.
Dr. Willis completed his Categorical Medicine Internship, Internal Medicine Residency, and became Chief Resident in Medicine at Fitzsimons Army Medical Center in Denver, CO.
He then completed his Fellowship in Gastroenterology at Walter Reed Army Medical Center in Washington D.C.