| Provider | Group Practice/Location | Office Phone |
| Grier, Brian PA | Intermountain Health Connect Care - Urgent Care & Physical Therapy MT | 801-442-5502 |
| Griffeth, Susan NP | Intermountain Health Heart & Vascular - Butte Cardiac Interpretations | (406) 496-3633 |
| Griffeth, Susan NP | Intermountain Health Heart & Vascular - Gallatin Clinic | (406) 613-7999 |
| Griffin, Steven DO | Holy Rosary Healthcare | (406) 233-2600 |
| Griffin, Steven DO | Holy Rosary Healthcare Clinic | (406) 233-2500 |
| Grinsell, Matthew MD | SVHC Fortin Pediatric Specialty Clinic | (406) 237-5300 |
| Groff, Kelsie APRN | Broadwater Clinic - Walk-in | (406) 237-8550 |
| Groff, Kelsie APRN | Heights Clinic - Walk-in | (406) 237-8400 |
| Groff, Kelsie APRN | Intermountain Health West End Clinic - Walk In | (406) 901-2580 |
| Groff, Kelsie APRN | Laurel Clinic - Walk-in | (406) 237-3160 |
| Groff, Kelsie APRN | N. 27th Walk-in Clinic | (406) 237-5110 |
| Groover, Michael DO | Ortho Montana PSC | (406) 237-5050 |
| Groover, Michael DO | Intermountain Health Holy Rosary Hospital | (406) 233-2600 |
| Groover, Michael DO | Intermountain Health Holy Rosary Hospital - Orthopedics | 406-223-4000 |
| Groover, Michael DO | Ortho Montana PSC - Lewistown | 406-237-5050 |
| Groover, Michael DO | Ortho Montana PSC - Miles City | 406-237-5050 |
| Grosulak, Lynn LCPC | Lynn M. Grosulak PLLC | (406) 855-9446 |
| Grove, Cameron MD | Roundup Memorial Healthcare | (406) 323-2301 |
| Grove, Cameron MD | Roundup Memorial Healthcare Clinic | (406) 323-3337 |
| Grove, Cameron MD | Vista Plains Health | (406) 632-4351 |
| Grove, Cameron MD | Vista Plains Health Clinic | (406) 632-4343 |
| Grover, Hayley CNM | ||
| Grubbs, Mckenzie LCPC | Youtherapy, PLLC | 406-201-9720 |
| Grundhauser (Castro), Carla LCSW | Big Sky Behavioral Health Inc | (406) 672-8411 |
| Grundhauser (Castro), Carla LCSW | Yellowstone Boys & Girls Ranch | (406) 656-3112 |