| Marsh , Kate FNP | Holy Rosary Healthcare Clinic | (406) 233-2500 |
| Marsh , Kate FNP | Bighorn Valley Health Center - Powder River Public Health | (406) 436-2297 |
| Marsh , Kate FNP | Bighorn Valley Health Center - Colstrip | (406) 748-2800 |
| Marsh , Kate FNP | Bighorn Valley Health Center - St Labre | (406) 784-6721 |
| Marsh , Kate FNP | Bighorn Valley Health Center - Forsyth | (406) 346-2156 |
| Marsh , Kate FNP | Bighorn Valley Health Center - Hardin | (406) 665-4103 |
| Marsh , Kate FNP | Bighorn Valley Health Center - Ashland | (406) 784-2346 |
| Marsh , Kate FNP | Bighorn Valley Health Center - Miles City | (406) 874-8700 |
| Marsh , Kate FNP | BVHC - Sweet Medical Center - Chinook | (406) 357-2294 |
| Marsh , Kate FNP | BVHC - Sweet Medical Center - Harlem | (406) 353-4861 |
| Marsh , Kate FNP | BVHC Central MT Community Health Center - Lewistown | (406) 535-6545 |
| Martell, Athena LAC | Yellowstone Boys & Girls Ranch | (406) 655-2100 |
| Martell, Athena LAC | Yellowstone Boys & Girls Ranch - Chemical Dependency | (406) 245-2751 |
| Martell , Bret MD | Eastern Radiological Associates | (406) 237-5490 |
| Massing, Thomas PA-C | SVHC Heart & Vascular Center | (406) 238-6820 |
| Massouh, Marwan MD | SJMG Radiation Oncology | (406) 723-2621 |
| Massouh, Marwan MD | St James Medical Oncology | (406) 723-2621 |
| Matovich-Brooke, Lisa LCPC | Lisa Matovich Brooke Counseling | (406) 672-7904 |
| Mattingly, Adam PA-C | SVHC Broadwater Walk-In Clinic | (406) 237-4116 |
| Mattingly, Adam PA-C | SVHC OCC Health | (406) 237-8855 |
| Maughan , Stephanie NP | SVH Neonatology | (406) 237-7076 |
| Mayer, Alan MD | SJMG Emergency Physicians | (406) 723-2585 |
| McBride, Kevin OD | Drs. McBride & McBride Optometrists, PC | (406) 656-7605 |
| McCallum, Anine FNP | Holy Rosary Healthcare | (406) 233-2600 |
| McClafferty, Micaul PA-C | SJMG Rocky Mountain Clinic | (406) 496-3633 |
