| Provider | Group Practice/Location | Office Phone |
| Hole, Steven MD | Intermountain Health St. James Hospital | 406-723-2500 |
| Holloway, Brian MD | NEMHS - Poplar Community Hospital | (406) 768-6100 |
| Holloway, Brian MD | NEMHS - Trinity Hospital | (406) 653-6500 |
| Holman, Rachel CGC | ||
| Hong, Susan MD | Intermountain Health Holy Rosary Hospital | (406) 233-2600 |
| Hooks, Delaina PA | ||
| Hool, Kristina MD | St. Vincent Regional Hospital - Cancer Centers of Montana | (406) 238-6290 |
| Hool, Kristina MD | Intermountain Health Holy Rosary Hospital | (406) 233-2600 |
| Horn, Jeffrey MD | Holy Rosary Healthcare | (406) 233-2600 |
| Horn, Jeffrey MD | Intermountain Health Heart & Vascular - Downtown Cardiac & Vascular Surgery | (406) 238-6820 |
| Horn, Jeffrey MD | Intermountain Health Heart & Vascular - Gallatin Thoracic & Vascular Surgery Outreach | (406) 613-7999 |
| Horn-Charnesky, Frances LCSW LAC | Rimrock Foundation | (406) 248-3175 |
| Horn-Charnesky, Frances LCSW LAC | Rimrock Foundation 2 | (406) 248-3175 |
| Horsley, Sean LCSW | Intermountain Health Connect Care - Behavioral Health | 833-442-2670 |
| Horton, Sheila PT | Laurel Clinic - Family Medicine | (406) 628-6311 |
| Horton, Sheila PT | Red Lodge Clinic - Physical Therapy | (406) 446-3850 |
| Horton, Sheila PT | Laurel Clinic- Physical Therapy | (406) 628-2831 |
| Hosking, Seth DPT | Physical Therapy in Motion - Downtown | (406) 969-2518 |
| Hotchkiss, Laura MD | Eastern Radiological Associates | (406) 237-5490 |
| Howe, Robert MS, LCPC | Yellowstone Boys & Girls Ranch | (406) 656-3112 |
| Hoyer, Eric MD | NEMHS - Poplar Community Hospital | (406) 768-6100 |
| Hoyer, Eric MD | NEMHS - Trinity Hospital | (406) 653-6500 |
| Huan, Mengjing MD | St. Vincent Regional Hospital Neurology Service | (406) 237-3850 |
| Huan, Mengjing MD | Intermountain Health St. Vincent Regional Hospital | (406) 238-7800 |
| Huang, Holly MD | St. Vincent Regional Hospital Neurology Service | (406) 237-3850 |