Office Addresses. Lower Salford, Harleysville (682 Main Street, Harleysville, PA 19438 - 215-256-8040) Pennridge, Sellersville (1105 Bethlehem Pike, Unit B3, Sellersville, PA 18960 - 215-257-5128) Upper Perkiomen, Pennsburg (420 Pottstown Avenue, Pennsburg 18073 - 215-679-9321) Franconia, Telford (211 Telford Pike, Telford 18969 - 215 ....