Gastroenterology Associates, N.A. P.C. was founded in October, 1976 by L. Wayne Pressgrove, M.D. Through the years the practice has grown to a total of 17 physicians practicing in three locations in the Birmingham area. Our physicians treat diseases and disorders of the digestive tract, gallbladder, pancreas and liver. All physicians are board certified in gastroenterology and internal medicine. Our physicians provide quality healthcare in a caring environment.