Brian Duffy, MD Top Doctor 825 Old Lancaster Rd Ste 250 Bryn Mawr,, Pennsylvania, 19010 Company Name: Nemours duPont Pediatrics Doctor Category: Pediatrics: Surgery Profile Let this business know you found them on Main Line Today's Online Directories. Locations Bryn Mawr, 825 Old Lancaster Rd Ste 250 Bryn Mawr,, Pennsylvania 19010 Claim/Edit Listing