Call 888-810-5995 to speak with a Methadone counselor. Who Answers? Methadone Doctors in Nashua, New Hampshire Santharam Yadati, M.D. 7 Prospect Street Nashua, NH 03060 View Details → Richard Tomb, M.D. 1 Main Street Nashua, NH 03064 View Details → Mitchell Cohen, M.D. St. Joseph Hospital 17 Riverside Street Nashua, NH 03060 View Details → Hisham Hafez, M.D. 7 Prospect Street Nashua, NH 03060 View Details →