Jeffrey Leiss, DDS Tags: TopDentist2023 Top Dentist 132 John Robert Thomas Drive Exton, Pennsylvania, 19341 Phone: 484-798-0175 Dentist Category: Orthodontics Profile Let this business know you found them on Main Line Today's Online Directories. Locations Exton 132 John Robert Thomas Drive Exton, Pennsylvania 19341 Claim/Edit Listing