| 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 |
| Stoddard, Jerrica NP | Intermountain Health Connect Care - Urgent Care & Physical Therapy MT | 801-442-5502 |
| Stofko, Douglas DO | St. Vincent Neurosurgery | (406) 237-5577 |
| 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 |
| 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 |
