VB.NET Query to get data when Key ID is Null aka Nothing (vb.net)

Dim Query = From x In ctx.tbl_funding_capitation _ Order By x.start_dt Descending _ Select New With { _ .providerID = If((x.my_id IsNot Nothing), x.tbl_data.DATA_ID, Nothing),
 _ .provider = If((x.my_id IsNot Nothing), x.tbl_data.DATA_NAME, "")
, _ .active = x.active
 }