FLORHAM PARK, NJ—New York City-based The Rockefeller Group has announced it will develop a four-story, 100,000-sq.-ft. medical office building located at 140 Park Ave. for Summit Medical Group at The Green at Florham Park, a 268-acre, master-planned development located in Florham Park, N.J.

The tenant will occupy the entire property for a 15-year term.

Construction is planned to begin this September with completion and occupancy slated for early 2015. Upon completion, the building will include general medical office space, ambulatory care and radiology services, as well as an ambulatory surgery center.

Cushman & Wakefield Vice Chairman Marc Rosenberg and Summit Medical Group Chief of Operations Karen Graham represented Summit Medical Group in its site selection and lease negotiations. The Rockefeller Group was represented in-house by Clark Machemer, vice president, and Johanna Chervak, associate director.