General Dermatology Providers Barrett & Geiss Dermatology of Ohio is here for all your Dermatologic needs. Get Started Today General Dermatology Providers Barrett & Geiss Dermatology of Ohio is here for all your Dermatologic needs. Get Started Today MEET OUR TEAMDavid F. Geiss, D.O., FAOCDread moreMichael C. Duffey, M.D.read moreMichael Snedeker, PA-Cread moreJamie Weaver, P.A.-C.read moreJames L. Barrett, M.D., FAAOread moreAngela S. Casey, MDread moreBrian Biernat, MDread more