GRAND RAPIDS — A physical therapy provider with nationwide growth plans now calls Grand Rapids home following an acquisition that more than doubles its size.

The deal to buy a majority stake in Muskegon-based Shoreline Vision serves as the largest transaction yet for Great Lakes Management Services Organization.

Great Lakes Management Services Organization, the company formed last spring with private equity firm Sterling Partners’ acquisition of Grand Rapids Ophthalmology, acquired Shoreline Vision in Muskegon.