Hidden Oak Winery Share: Winery Hidden Oak Winery Visit Website 4671 S. El Pomar Templeton, California 93465 (805) 237-9315 http://www.hiddenoakwinery.com About Map About Hidden Oak Winery is owned and operated by the James family. Mike James is the grape grower and winemaker. He has one goal. That is to produce the finest bottle of wine for his customers. A great wine What's Nearby? Distance: 5 10 15 20 25 50 mi.