Internal Medicine Clinic, Inc. best intmedclinic.com. Internal Medicine Clinic, Tuscarawas County Internal Medicine Clinic, Tuscarawas County 335 Oxford St., Suite C Dover, OH 44622 Main Phone: (330) 364-7551 Fax:(330) 364-7553 Hours: Monday-Thursday, 9 AM-5 PM (closed for lunch from 12-1 PM).