Merle Grandberg was honored at the Jewish Community Housing for the Elderly’s annual event, co-chaired by Dan Kraft and wife Wendy, Lynne Elfland, Ellen Mittman, and Robin Polishook. Grandberg has been JCHE’s board chair for three years and has long been active with Combined Jewish Philanthropies. . . . It’s true that chef Michael Schlow is closing Radius after 15 years — but not quite yet. Friday’s special dinner with Mario Batali was one of several events planned to mark the closing, which happens June 29.