
| Provider | Group Practice/Location | Office Phone |
| Arefiev, Yevgeniy MD | Downtown Clinic - Gastroenterology | (406) 238-6380 |
| Armstrong, Christina PA-C | SJMG Emergency Physicians | (406) 723-2585 |
| Armstrong, Todd CRNA | Butte Clinic - Anesthesia | (406) 723-2472 |
| Armstrong, Todd CRNA | Holy Rosary Healthcare | (406) 233-2600 |
| Arndt, Skye RD | BVHC DBA One Health - Chinook | (406) 357-2294 |
| Arndt, Skye RD | BVHC DBA One Health - Ashland | (406) 784-2346 |
| Arndt, Skye RD | BVHC DBA One Health - Wyola | 406-665-4103 |
| Arndt, Skye RD | BVHC DBA One Health - St. Labre | (406) 784-6721 |
| Arndt, Skye RD | BVHC DBA One Health - Miles City | (406) 874-8700 |
| Arndt, Skye RD | BVHC DBA One Health - Lewistown | 406-535-6545 |
| Arndt, Skye RD | BVHC DBA One Health - Harlem Sweet | (406) 353-4861 |
| Arndt, Skye RD | BVHC DBA One Health - Harlem | 406-353-4861 |
| Arndt, Skye RD | BVHC DBA One Health - Hardin School | 406-665-4103 |
| Arndt, Skye RD | BVHC DBA One Health - Hardin Campus | (406) 665-4103 |
| Arndt, Skye RD | BVHC DBA One Health - Hardin | (406) 665-4103 |
| Arndt, Skye RD | BVHC DBA One Health - Glendive | (406) 815-5831 |
| Arndt, Skye RD | BVHC DBA One Health - Dawson | 406-377-9410 |
| Arp, Paul CRNA | Holy Rosary Healthcare Clinic | (406) 233-2500 |
| Arp, Paul CRNA | Holy Rosary Healthcare | (406) 233-2600 |
| Arrey-Mbi, Takor MD | Intermountain Health Heart & Vascular - Downtown Cardiac & Vascular Surgery | (406) 238-6820 |
| Arthur, Albert MD | Holy Rosary Healthcare Clinic | (406) 233-2500 |
| Arthur, Albert MD | Holy Rosary Healthcare | (406) 233-2600 |
| Atluri, Mahesh DO | Diversified Radiology | (303) 914-8800 |
| Atluri, Mahesh DO | SJMG Radiology | (406) 723-2500 |
| Attreya, Akash DO | Holy Rosary Healthcare Clinic | (406) 233-2500 |