The property last sold for $9.69 million in 2002.
The facility is planned to open in late 2021.
It will have 140 assisted living beds, on-site dining, and resort-style amenities such as a tavern, a beauty salon and a wine bar.
The multi-building medical complex will have a state-of-the-art women’s health center offering gynecology and mammography services, a full-service pharmacy and a laboratory.
The new state-of-the-art center will replace the existing location on Wickham Way.