try this
var LocationCenterIDs = (from ulc in lstUserLocationsCenter join asp in lstAspNetUsers on ulc.UserID equals asp.Id select ulc.LocationCenterID);
var result = lstClientsNotifications.Where(k => LocationCenterIDs.Contains(k.LocationCenterID)).OrderByDescending(k => k.UploadDate).ToList();
replace the List with your object names