It wants to build a four-story, 116,169-square-foot surgical building on the south side of the campus, to be built atop the one-story emergency department.
The assisted living facility last sold for $7 million in 2014, records show.
The building was sold to investment company KNC Capital Partners.
The hospital, owned by Nashville, Tennessee-based HCA Healthcare Inc., bought the property from the Vaughn Family Trust in December.
The new building is expected to be completed in the first quarter of 2025.