River Ridge Dermatology Place Category: Dermatologist Clinician Name: Chad Johnston DOAddress: 3706 S Main St 24060 City: BlacksburgState: VAPhone Number: 5409513376Fax: 5409511276First Name: ChadLast Name: JohnstonSpeciality: Dermatology Map No Records FoundSorry, no records were found. Please adjust your search criteria and try again. Google Map Not LoadedSorry, unable to load Google Maps API. Driving Walking Bicycling Public Transport Miles Kilometers Previous Next