Home › Top 4 Dermatologist in Allentown, Pennsylvania Find best Dermatologist in Allentown, Pennsylvania, with all necessary contact information, including addresses, phone numbers, working hours, map locations, and website links. Marie S. Wagener, D.O. US, Allentown, PA 18104250 Cetronia Rd suite 302 Dermatology & Skin Cancer Center, P.C: John Gregory Brady, D.O. US, Allentown, PA 18104798 Hausman Rd #310 Dr Geffner Dedicated Dermatology US, Allentown, PA 18109943 Union Blvd Joshua M. Levin, M.D. US, Allentown, PA 181031259 S Cedar Crest Blvd #100