| Provider | Group Practice/Location | Office Phone |
| Stricker, Lisa NP, FNP MSN, FNP-BC | North Shiloh Clinic - Transitional Care Group | (406) 237-8282 |
| Stricker, Lisa NP, FNP MSN, FNP-BC | SVHC Emergency & Trauma Center | (406) 237-4116 |
| Strickland, Colin MD | Diversified Radiology | (303) 914-8800 |
| Strizich, Thomas MD | SJMG Rocky Mountain Clinic | (406) 496-3633 |
| Stroebe, Kevyn DO | Downtown Clinic - Internal Medicine | (406) 238-6900 |
| Stroebe, Kevyn DO | Intermountain Health West End Clinic - Internal Medicine | (406) 238-6900 |
| Sturdevant, Rebecca FNP, MSN | Bair Memorial Clinic | (406) 632-4343 |
| Sturdevant, Rebecca FNP, MSN | Wheatland Memorial Hospital | (406) 632-4351 |
| Sudhakar, Rajeev MD | ||
| Sue, Veronica MD | Diversified Radiology | (303) 914-8800 |
| Sue, Veronica MD | SJMG Radiology | (406) 723-2500 |
| Sullivan, Brian MD | Cogent Healthcare of MT, PC dba Sound Physicians of MT | (406) 657-7000 |
| Sullivan, Brian MD | Community Clinic - Fallon Memorial Hospital | (406) 778-3331 |
| Sullivan, Brian MD | Community Clinic DBA Fallon Medical Complex | (406) 778-2833 |
| Sullivan, Brian MD | Wibaux Clinic DBA Fallon Medical Complex | (406) 778-2833 |
| Sullivan, Brian MD | Community Clinic - Fallon Medical Complex | (406) 778-3331 |
| Sullivan, Scott MD | NEMHS - Poplar Community Hospital | (406) 768-6100 |
| Sullivan, Scott MD | NEMHS - Trinity Hospital | (406) 653-6500 |
| Sullivan, Stacey LCPC | Yellowstone Boys & Girls Ranch | (406) 656-3112 |
| Sullivan, Mark PA-C | Ortho Montana PSC | (406) 237-5050 |
| Sullivan, Mark PA-C | Ortho Montana PSC - Westend | (406) 237-5050 |
| Summers, Bree LCPC | Courage Through Counseling PLLC | (406) 861-7412 |
| Sunku, Pranay MD | Diversified Radiology | (303) 914-8800 |
| Suri, Rakesh MD | ||
| Sussman, Arlene MD | NEMHS - Poplar Community Hospital | (406) 768-6100 |