Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Lawyer John P. McGann, Practice Areas No known practice areas. is located in the city of Marshfield, the state of Massachusetts. Attorney legal address 101 Weston Farm PathMarshfield, MA, 02050-2400. For more information, please call (781) 834-6117 Your comments* (not for publishing) * — Required information John P. McGann ← View details 101 Weston Farm PathMarshfield, MA, 02050-2400, Marshfield, Massachusetts (781) 834-6117