Omnitech Institute 4319 Covington Hwy, Decatur, GA30035 Omnitech Institute's Decatur campus is housed in six suites in a three-story building off Covington Highway. The closest…More visible landmark is the Public Storage facility next door. Omnitech Institute is a vocational school offering three programs of study: medical assistant, medical billing and coding and Omnitech Networking Program. The Networking Program introduces students to basic computer programs and to music engineering. The Kensington Line #107 Marta bus stops right in front of the school.