| Streeter-Sedillos, Stefanie PA-C | North Shiloh Clinic - Transitional Care Group | (406) 237-8282 |
| Streeter-Sedillos, Stefanie PA-C | St. Vincent Regional Hospital Palliative Care | (406) 237-3913 |
| Streit, Edna PA | McCone County Health Center | (406) 485-2063 |
| Stricker, Lisa NP, FNP MSN, FNP-BC | Broadwater Clinic - Walk-in | (406) 237-8550 |
| Stricker, Lisa NP, FNP MSN, FNP-BC | Downtown Clinic - Pain Center | (406) 237-8808 |
| Stricker, Lisa NP, FNP MSN, FNP-BC | N. 27th Walk-in Clinic | (406) 237-5110 |
| 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 |
| 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 |
| 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 | Community Clinic - Fallon Medical Complex | (406) 778-3331 |
| 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 |
| Suri, Rakesh MD | | |
| Sutherin, Elijah PA | St. Vincent Neurosurgery | (406) 237-5577 |
| Sutherin, Elijah PA | St. Vincent Regional Hospital Neurosciences | (406) 237-5577 |
