David J. Corallo, DO is a dermatologist who practices at Marco R. Corallo, D.o., LLC located at 18586 5th St in Beloit, OH 44609 (Mahoning County). Dr. David J. Corallo has 15+ years of experience in dermatology. Education. David J. Corallo, DO earned a degree of a Doctor of Osteopathic Medicine. Licenses and Affiliations. David J. Corallo, DO ....