About Us Brentwood Hearing Center (formerly known as Brentwood Hearing and Hearing Aid Center) was established by its founder and former owner, Ann Sitton, in 1986. Ms. Sitton, who is a native of Hartsville, Tennessee, launched the center after the early days of her career at the Vanderbilt Bill Wilkerson Hearing and Speech Center having graduated with her M.S. degree in Audiology from Vanderbilt University.