Former Plasma Donation Center One story multi-use office building located at the intersection of Buffalo St. and W. Maple Street in Downtown Johnson City. The site is .6 miles from I-26, Exit 23, 1.7 miles to ETSU and less than 3 miles to both VA and JCMC. There is a parking lot next to the building. Location is accessible to downtown shopping, restaurants, other amenities within walking distance.