Avera Health has officially acquired the Center for Neurosciences, Orthopaedics & Spine (CNOS), a major regional medical group based in Dakota Dunes.

The transition will take effect Jan. 1, 2027, at which point the practice will operate under the new name Avera CNOS.

The acquisition marks a massive expansion of Avera’s footprint in the tri-state area. The agreement absorbs more than 100 CNOS phy…