Directions to AdventHealth Medical Group Family Medicine at Harker Heights AdventHealth Medical Group Family Medicine at Harker Heights 3035 Stillhouse Lake Dr Harker Heights, TX 76548 Directions to AdventHealth Medical Group Family Medicine at Harker Heights AdventHealth Medical Group Family Medicine at Harker Heights 3035 Stillhouse Lake Dr Harker Heights, TX 76548 Call AdventHealth Medical Group Family Medicine at Harker Heights at254-519-8922