The 2015 renovation and expansion project included a 17,000 square feet addition to the hospital for the Korff Fitness and Wellness Center. This addition is home to the hospital's rehab services; Physical Therapy (PT), Occupational Therapy (OT), Speech Therapy and Cardiac Therapy. New services added were the ADA kitchen, laundry room and bathroom for OT patients and a therapy pool for PT patients. In addition to the Rehab department, the new addition has a public fitness center that features an indoor walking track, weights, cardio equipment, a room for fitness classes and a pool for exercising. The facility has 24/7 access and is available on a membership basis for the residents of Thayer County and the surrounding communities.

The Korff Fitness and Wellness Center is staffed by one Wellness Coordinator, a Dietitian, and support staff. TCHS has a wellness committee made up of ten employees that meet throughout the year to help facilitate community wellness programs. This committee hosts community educational events; women's health night, men's health nights, trauma symposiums, reduced lab health fairs, school health fairs, fun run sponsorships, corporate wellness programs, diabetes education and nutrition counseling.