ChamberMaster Template Health Care Service Corporation/BCBS-MT Medical Insurance Claims Services Health Care Service Corporation/BCBS-MT Visit Website 3320 10th Ave S Great Falls, MT 59405 (406) 791-7008 Hours: Mon-Fri 7am-5PM CST About Map About We are a Blue Cross Blue Shield Provider Call Center located in Great Falls MT. We take provider calls for IL, NM, OK and TX. Provideing information on benefits and eligibility, claims status, and pre services. What's Nearby? Distance: 5 10 15 20 25 50 mi.