Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Lawyer Patrick John Callahan, Practice Areas No known practice areas. is located in the city of Davidsonville, the state of Maryland. Attorney legal address 844 W Central AveDavidsonville, MD, 21035-2317. For more information, please call (410) 798-7771 Your comments* (not for publishing) * — Required information Patrick John Callahan ← View details 844 W Central AveDavidsonville, MD, 21035-2317, Davidsonville, Maryland (410) 798-7771