Martin O’Riordan Top Doctor 2705 DeKalb Pike East Norriton Township, Pennsylvania, 19401 Phone: 610-586-4100 Company Name: Mercy Cardiology Doctor Category: General Cardiology Profile Let this business know you found them on Main Line Today's Online Directories. Locations East Norriton Township 2705 DeKalb Pike East Norriton Township, Pennsylvania 19401 Claim/Edit Listing