Matthew J. Riffle, MD Specialties: Internal Medicine, Family Medicine, Primary Care Still Seeing Patients at:225 Physicians Park DrivePoplar Bluff, MO 63901 [map]573-727-5500 Saint Francis Medical Partner Reviews for Matthew J. Riffle, MD Review This Provider on Google He was very thoughtful and thorough considerate and pleasant Thorough and easy to understand He is my number one doctor in whole wide world only one l trust he is so and so wonderful to me . Board Certification American Board of Internal Medicine Medical Education 1978 - St. Louis University School of Medicine, St. Louis, MO Residency 1985 - Wilford Hall Medical Center, Lackland AFB, TX