Billings, MT 59101 M-F: 8am-5pm . Billings Downtown. 2900 12th Ave. N Suite 140W & 100E Billings, MT 59101 M-F: 8am-5pm . Billings West End (MACC) 1739 Spring Creek Lane Billings, MT 59102 M-F: 8am-5pm . Billings Heights. 1635 Gleneagles Blvd. Billings, MT 59105.