Walter Klein, MD Top Doctor 130 South Bryn Mawr Avenue Lower Merion Township, Pennsylvania, 19010 Phone: 484-476-2000 Company Name: Main Line Health Laboratories Doctor Category: Pathology Profile Let this business know you found them on Main Line Today's Online Directories. Locations Lower Merion Township 130 South Bryn Mawr Avenue Lower Merion Township, Pennsylvania 19010 Claim/Edit Listing