Bank of Tennessee, Mountcastle Branch Basic Info Reviews Routing Numbers Map & Direction Name: Bank of Tennessee, Mountcastle Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 112 Mountcastle Drive Johnson City, Tennessee 37601 Washington County View other branches Phone: 423-282-9500 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer064202705YY064208013YY From: To: