Howard B Gross DDS Top Dentist 2100 North Broad St. Ste 204 Lansdale, Pennsylvania, 19446 Phone: 215-368-5110 Company Name: North Penn Periodontal Associates Dentist Category: Periodontics Profile Let this business know you found them on Main Line Today's Online Directories. Locations Lansdale 2100 North Broad St. Ste 204 Lansdale, Pennsylvania 19446 Claim/Edit Listing