| Provider | Group Practice/Location | Office Phone |
| Ross, Derrek LCPC LAC | Uncharted Therapeutic Services | 406-647-0473 |
| Rotelli, Lisa DO | Butte Clinic - Pediatrics | (406) 496-3600 |
| Roy, Debanshu MD | ||
| Rozelle, Christopher MD | Yellowstone Pathologists PC - Billings | (406) 238-6360 |
| Rozelle, Christopher MD | Yellowstone Pathologists PC - Bozeman | (406) 585-1004 |
| Rozelle, Christopher MD | Yellowstone Pathology Institute Inc | (406) 238-6360 |
| Rubin, Patricia MD | Holy Rosary Healthcare Clinic | (406) 233-2500 |
| Rubin, Patricia MD | Intermountain Health Heart & Vascular - Downtown Cardiothoracic & Vascular Surgery | (406) 237-5001 |
| Rucker, Lauren PA-C | Ortho Montana PSC | (406) 237-5050 |
| Rucker, Lauren PA-C | Ortho Montana PSC - Westend | (406) 237-5050 |
| Rudolph, Justen MD | Downtown Clinic - Diabetes & Endocrinology | (406) 237-8500 |
| Ruffatto, Nichole LCSW | Sunset Journey Therapeutic Services | 406-314-1980 |
| Ruggles, Wendy PA-C | Broadwater Clinic - Family Medicine | (406) 237-5200 |
| Ruggles, Wendy PA-C | Fuller Family Medicine PC | (406) 651-9355 |
| Ruggles, Wendy PA-C | N. 27th Walk-in Clinic | (406) 237-5110 |
| Ruggles, Wendy PA-C | SVHC Emergency & Trauma Center | (406) 237-4116 |
| Rugino, Alex DO | St. Vincent Neurosurgery | (406) 237-5577 |
| Russell, Valeri PA-C | Holy Rosary Healthcare | (406) 233-2600 |
| Russell, Valeri PA-C | Roundup Memorial Healthcare Clinic | (406) 323-3337 |
| Russell, Valeri PA-C | Roundup Memorial Hospital | (406) 323-2301 |
| Russell, Kathryn MD | SVHC Fortin Pediatric Specialty Clinic | (406) 237-5300 |
| Russell, Ashley APRN, MSN, RN | Pioneer Medical Center | (406) 932-4603 |
| Russell, Ashley APRN, MSN, RN | Wheatland Memorial Hospital | (406) 632-4351 |
| Russell, Ashley APRN, MSN, RN | Wheatland Memorial Healthcare Clinic | (406) 632-4343 |
| Russo, Kathleen APRN | Beartooth Billings Clinic | (406) 446-2345 |