Patient Portal Patient Billing and Financial Assistance 800-548-2627 Find a Provider; Our Services; Patients & Visitors; Locations; Menu ... David Whitt, DO. Find a Provider; David Whitt, DO; Diley Medical Group. 7901 Diley Rd. Ste. 260 Canal Winchester, OH 43110 Get Directions 614-920-1000 614-920-1007.