Get Involved! Send us an e-mail at rfs@massrad.org, or just drop in on one of our meetings at the Massachussetts Medical Society (MMS) Headquarters (directions below). A schedule of our meetings is available on our Calendar page. Driving Directions to MMS Headquarters Address: 860 Winter Street Waltham Woods Corporate Center Waltham, MA 02451-1411 From Boston: West on the Mass. Pike/I-90 to Exit 15. Keep right beyond the toll booth and follow the signs for I-95/128 North. Follow 95/128 North for approximately two miles to Exit 27B (Winter Street), and keep right and go over 128 and follow Winter Street for approximately one mile. Waltham Woods is on the left. From the West: East on the Mass. Pike/I-90 to Exit 14. Keep left beyond the toll booth and follow the signs for I-95/128 North. Follow 95/128 North for approximately two miles to Exit 27B (Winter Street), and keep right and go over 128 and follow Winter Street for approximately one mile. Waltham Woods is on the left. From the North: South on Route 128/I-95 to Exit 27B (Winter Street) and keep right and follow Winter Street for approximately one mile. Waltham Woods is on the left. From the South: North on Route 128/I-95 to Exit 27B (Winter Street) and keep right and go over 128 and follow Winter Street for approximately one mile. Waltham Woods is on the left.