Thomas J Riordan MD 1030 E Lancaster Ave Ste L10 Bryn Mawr, Pennsylvania, 19010 Doctor Category: Neurology and Psychiatry Profile Let this business know you found them on Main Line Today's Online Directories. Locations Bryn Mawr 1030 E Lancaster Ave Ste L10 Bryn Mawr, Pennsylvania 19010 Claim/Edit Listing