
| Provider | Group Practice/Location | Office Phone |
| Carrese, Ian PA-C | NEMHS - Riverside Family Clinic | (406) 768-5171 |
| Carrington-Hellier, Crystal OD | Billings Family Eyecare Shiloh PLLC | (406) 245-2436 |
| Carrington-Hellier, Crystal OD | Billings Family Optical | (406) 245-2299 |
| Carstensen, Martha LCSW | Mental Health Center - Roundup | (406) 323-1142 |
| Carstensen, Martha LCSW | Mental Health Center - Billings | (406) 252-5658 |
| Carter, Courtney MD | Eastern Radiological Associates | (406) 237-5490 |
| Carter-Flynn, Kelly LAC | Yellowstone Boys & Girls Ranch - Chemical Dependency | (406) 245-2751 |
| Carter-Flynn, Kelly LAC | Yellowstone Boys & Girls Ranch | (406) 656-3112 |
| Caruso, Christian PAC | Broadwater Clinic - Walk-in | (406) 237-8550 |
| Caruso, Christian PAC | Heights Clinic - Walk-in | (406) 237-8400 |
| Caruso, Christian PAC | Intermountain Health West End Clinic - Walk In | (406) 901-2580 |
| Caruso, Christian PAC | Laurel Clinic - Walk-in | (406) 237-3160 |
| Caruso, Christian PAC | N. 27th Walk-in Clinic | (406) 237-5110 |
| Caruso, Christian PAC | Riverstone Health Clinic | (406) 697-0976 |
| Caruso, Christian PAC | RiverStone Health Clinic - Bridger | (406) 662-3740 |
| Caruso, Christian PAC | RiverStone Health Clinic - Joliet | (406) 962-9062 |
| Caruso, Christian PAC | RiverStone Health Clinic - Worden | (406) 967-2255 |
| Caruso, Christian PAC | Riverstone Health Lil Anderson Center | (406) 247-3350 |
| Caruso, Michael DO | NEMHS - Trinity Hospital | (406) 653-6500 |
| Caruso, Michael DO | NEMHS - Poplar Community Hospital | (406) 768-6100 |
| Cassidy, Cassandra LCPC | Cassandra Cassidy LCPC LLC | (406) 272-5090 |
| Castillo, Crystal LCPC | Chickadee Wisdom | (406) 200-2700 |
| Cates, Cassandra LAC | Rimrock Foundation | (406) 248-3175 |
| Cavan, Desiree FNP-C | St. Vincent Rheumatology | (406) 237-5780 |
| Certain, Courtney DO | SVH Hospitalists | (406) 237-3850 |