| Stilwill, Sarah MD | Pioneer Medical Center | (406) 932-4603 |
| Stilwill, Sarah MD | Roundup Memorial Hospital | (406) 323-2301 |
| Stilwill, Sarah MD | South Big Horn County Hospital District DBA Three Rivers Health | (307) 568-3311 |
| Stilwill, Sarah MD | Wheatland Memorial Hospital | (406) 632-4351 |
| Stocker, Jamie LCPC | Jamie Stocker LCPC ATR | (406) 381-1953 |
| Storey, Karli LCPC | Summit Therapy Center PC | (406) 272-2606 |
| Streeter-Sedillos, Stefanie PA-C | North Shiloh Clinic - Family Medicine | (406) 237-8989 |
| 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 |
| 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 |
| Sue, Veronica MD | Diversified Radiology | (303) 914-8800 |
| Sue, Veronica MD | SJMG Radiology | (406) 723-2500 |
| 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 | | |
| Sutherin, Elijah PA | St. Vincent Neurosurgery | (406) 237-5577 |
