1) Arms or flames lead-in 2) Letter-shaped fastener 3) Starter for arms or smoke 4) Words before arms or smoke 5) Words before smoke or flames 6) Words before smoke or the air 7) Words with arms or age Found on https://www.crosswordclues.com/clue/upin
1) Arms or flames lead-in 2) Letter-shaped fastener 3) Starter for arms or smoke 4) Words before arms or smoke 5) Words before smoke or flames 6) Words before smoke or the air 7) Words with arms or age 
Unique Physician Identifier Number