Patient Portal; Massena Hospital. View on Map (315) 769-4200-A + A. Massena Hospital (MH) is an acute care, 25-bed hospital providing inpatient medical, surgical, and pediatric services in addition to emergency care. Ancillary services include a 24/7 laboratory, 3.0 Tesla MRI, 128 low radiation large bore CT scanner, bone densitometry ....