Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Lawyer Heather Mumma Harner, Practice Areas No known practice areas. is located in the city of Mount Joy, the state of Pennsylvania. Attorney legal address 744 W Main StMount Joy, PA, 17552-1808. For more information, please call (717) 755-3600 Your comments* (not for publishing) * — Required information Heather Mumma Harner ← View details 744 W Main StMount Joy, PA, 17552-1808, Mount Joy, Pennsylvania (717) 755-3600