
| Provider | Group Practice/Location | Office Phone |
| Alderman, Dan MD | Beartooth Billings Clinic | (406) 446-2345 |
| Alharethi, Rami MD | Intermountain Health Heart & Vascular - Downtown Cardiac & Vascular Surgery | (406) 238-6820 |
| Allen, Julie DO | NEMHS - Poplar Community Hospital | (406) 768-6100 |
| Allen, Matthew MD | Eastern Radiological Associates | (406) 237-5490 |
| Allen, Julie DO | NEMHS - Trinity Hospital | (406) 653-6500 |
| Allen, Jeffrey CRNA | Holy Rosary Healthcare Anesthesia | (406) 233-2600 |
| Allen, Julie DO | Beartooth Billings Clinic - Clinic | (406) 446-2345 |
| Allen, Julie DO | Beartooth Billings Clinic | (406) 446-2345 |
| Almodovar, Kim MD | Downtown Clinic - Gastroenterology | (406) 238-6380 |
| Almonte, Casey MD | NEMHS - Trinity Hospital | (406) 653-6500 |
| Almonte, Casey MD | NEMHS - Poplar Community Hospital | (406) 768-6100 |
| Alsina, George MD | St. Vincent Neurosurgery | (406) 237-5577 |
| Alswang, Martin MD | Intermountain Health - Billings Pediatric Specialty Clinic | (406) 237-5300 |
| Altenhofen, Luke PA-C | Holy Rosary Healthcare | (406) 233-2600 |
| Alvord-Brown, Aimee PA-C | Billings OB/GYN Associates PC | (406) 248-3607 |
| Amato, Erin MD | Turnwell Mental Health of Montana - Grand | (406) 839-2985 |
| Amato, Erin MD | Yellowstone Boys & Girls Ranch - Clinic | (406) 655-2100 |
| Amato, Erin MD | Turnwell Mental Health of Montana - Bozeman | (406) 839-2985 |
| Amato, Erin MD | Yellowstone Boys & Girls Ranch - Inpatient | (406) 655-2100 |
| Amato, Erin MD | Yellowstone Boys & Girls Ranch | (406) 656-3112 |
| Amato, Erin MD | Turnwell Mental Health of Montana - 24th Street | (406) 839-2985 |
| Amberg, Edward PA-C | SJMG Emergency Physicians | (406) 723-2585 |
| Amen, Lynelle LCPC | Lynelle Amen MS, LCPC, PC | (406) 696-5134 |
| Ament, Joel MD | SVHC Pediatric Critical Care | (406) 237-7451 |
| Anders, Diana PA-C |