Patient Portal: For Appointments, Office Hours and Location . Meet our Staff... Drs. Karl Gauss, Paula Gauss and Elyn Ring, board certified in Internal Medicine, and the entire staff of Cortland Internist Associates are here to help you with all of your general medical needs. Karl F. Gauss, M.D., F.A.C.P. B.A. in Biology, SUNY Geneseo (1981) ....