| Provider | Group Practice/Location | Office Phone |
| Anderson, John DO | Eastern Radiological Associates | (406) 237-5490 |
| Anderson, Jill LAC, LCPC | Healing Space | (406) 393-0097 |
| Anderson, Carole NP | SVHC Neonatal Intensive Care | (406) 237-7076 |
| Anderson, James PA | SCL Health Medical Group - Butte Downtown Walk In | (406) 299-8400 |
| Anderson, James PA | SCL Health Medical Group - Butte Downtown | (406) 299-8400 |
| Anderson-Dawson, Tracy PA-C | Diversified Radiology | (303) 914-8800 |
| Andrade, Bijan MD | Beartooth Billings Clinic - Clinic | (406) 446-2345 |
| Andrade, Bijan MD | Beartooth Billings Clinic | (406) 446-2345 |
| Anzalone, Christopher DO | Intermountain Health Heart & Vascular - Downtown Cardiac & Vascular Surgery | (406) 238-6820 |
| Anzalone, Christopher DO | Intermountain Health Heart & Vascular - Gallatin Cardiology & Electrophysiology Outreach | (406) 237-5001 |
| Anzalone, Nicholas MD | Cogent Healthcare of MT dba Sound Physicians | (406) 657-7000 |
| Anzalone, Nicholas MD | SVH Hospitalists | (406) 237-3850 |
| Apostol, Joseph MD | ||
| Apostol, Joseph MD | Intermountain Health Heart & Vascular - Downtown Cardiac & Vascular Surgery | (406) 238-6820 |
| Arefiev, Yevgeniy MD | Downtown Clinic - Gastroenterology | (406) 238-6380 |
| Armstrong, Todd CRNA | Holy Rosary Healthcare Clinic | (406) 233-2500 |
| Armstrong, Todd CRNA | Holy Rosary Healthcare | (406) 233-2600 |
| Armstrong, Todd CRNA | Butte Clinic - Anesthesia | (406) 723-2472 |
| Arndt, Skye RD | BVHC DBA One Health - Ashland | (406) 784-2346 |
| Arndt, Skye RD | BVHC DBA One Health - Chinook | (406) 357-2294 |
| Arndt, Skye RD | BVHC DBA One Health - Dawson | 406-377-9410 |
| Arndt, Skye RD | BVHC DBA One Health - Glendive | (406) 815-5831 |
| Arndt, Skye RD | BVHC DBA One Health - Hardin | (406) 665-4103 |
| Arndt, Skye RD | BVHC DBA One Health - Hardin Campus | (406) 665-4103 |
| Arndt, Skye RD | BVHC DBA One Health - Hardin School | 406-665-4103 |