| A M Chiropractic | 224 W Main St Ste 510 Lewistown, MT 59457-2759 | (406) 535-6768 |
| A Plus Healthcare | 926 Main St Billings, MT 59105-3359 | (406) 245-6356 |
| Absarokee Medical Clinic | 55 N Montana Ave Absarokee, MT 59001 | (406) 328-4497 |
| Absolute Health Family Chiropractic Inc | 913 Sw Higgins Ave Missoula, MT 59803 | (406) 549-7171 |
| Accident & Industrial Injury Clinic | 330 S Idaho St Dillon, MT 59725-2532 | (406) 683-9600 |
| Ackerman Lorraine K | Billings Clinic-Columbus Columbus, MT 59019 | (406) 322-4542 |
| Acorn Pediatric | 280 W Kagy Blvd Bozeman, MT 59715 | (406) 522-5437 |
| Adam's Clinic Of Chiropractic | 638 1st St W Havre, MT 59501 | (406) 265-2288 |
| Advanced Care Hospital Of Montana | 3528 Gabel Rd Billings, MT 59102 | (406) 373-8000 |
| Advanced Care Hospital Of Montana | 3528 Gabel Rd Billings, MT 59102 | (406) 373-8211 |
| Advanced Eye Care Ennis-DR Joe Colella | 219 E Main Ennis, MT 59729 | (406) 682-4208 |
| Advanced Eyecare Associates | 4265 Fallon St Ste 1 Bozeman, MT 59718 | (406) 587-0668 |
| Advanced Eyecare Associates | 91 W Madison Ave Belgrade, MT 59714 | (406) 388-1988 |
| Advanced Imaging | 2803 South Ave W Missoula, MT 59804 | (406) 327-3950 |
| Advanced Medical Imaging | 905 Highland Blvd Ste 4100 Bozeman, MT 59715 | (406) 556-5201 |
| Advanced Medical Imaging | 905 Highland Boulevard Ste 4100 Bozeman, MT 59715 | (406) 556-5200 |
| Agricultural Experiment Stn | 52583 US Highway 87 Moccasin, MT 59462-9512 | (406) 423-5421 |
| Al-Anon & Alateen | 401 1st Ave N Great Falls, MT 59401-2507 | (406) 452-1234 |
| Alcohol & Drug Abuse | 301 Main Thompson Falls, MT 59873 | (406) 827-4241 |
| Alcoholics Anonymous | PO Box 1045 Polson, MT 59860-1045 | (406) 883-6664 |
| All Family Vision Care | 821 W Main St Lewistown, MT 59457 | (406) 538-2020 |
| Allen Barbara | 410 S 2 St Bridger, MT 59014 | (406) 662-3740 |
| Allergy & Asthma Consultants PLLC | 2055 N 22nd Ave Ste 1 Bozeman, MT 59718 | (406) 582-1111 |
| Allianz Life Of North America | 81 8th St Belgrade, MT 59714-3309 | (406) 388-7633 |
| Alpine Family Medicine | 734 9th St W Columbia Falls, MT 59912 | (406) 892-1011 |