| Provider | Group Practice/Location | Office Phone |
| Cahill, Carissa FNP | NEMHS - Riverside Family Clinic | (406) 768-5171 |
| Cahill, Carissa FNP | NEMHS - Trinity Hospital | (406) 653-6500 |
| Cahill, Carissa FNP | NEMHS - Poplar Community Hospital | (406) 768-6100 |
| Cahill, Carissa FNP | NEMHS - Faith Lutheran Home | (406) 653-6421 |
| Cahill, Carissa FNP | NEMHS - Listerud Rural Health Clinic | (406) 653-2501 |
| Cai, David MD | Ear, Nose & Throat Associates | (406) 238-6161 |
| Cameron, James MD | SVHC Neonatal Intensive Care | (406) 237-7076 |
| Campbell, TyaJean MD | Cogent Healthcare of MT dba Sound Physicians | (406) 657-7000 |
| Campbell, TyaJean MD | SVH Hospitalists | (406) 237-3850 |
| Campbell, TyaJean MD | Intermountain Health Holy Rosary Hospital | (406) 233-2600 |
| Campbell, TyaJean MD | St. Vincent Regional Hospital - Adult Critical Care | (406) 237-7200 |
| Campbell, TyaJean MD | St. Vincent Hospitalists | (406) 237-3850 |
| Campbell, TyaJean MD | Intermountain Health St. James Hospital | 406-723-2500 |
| Campbell, Andrew PA | Cogent Healthcare of MT, PC dba Sound Physicians of MT | (406) 657-7000 |
| Campbell, Andrew PA | St. Vincent Regional Hospital - Adult Critical Care | (406) 237-7200 |
| Cancro, Christopher MD | Cogent Healthcare of MT dba Sound Physicians | (406) 657-7000 |
| Cancro, Christopher MD | SVH Hospitalists | (406) 237-3850 |
| Cancro, Christopher MD | West Grand Clinic - Family Medicine | (406) 237-5353 |
| Cannon, George MD | St. Vincent Regional Hospital - Radiation Therapy | (406) 238-6290 |
| Cannon, George MD | Butte Clinic - Radiation Oncology | (406) 723-2621 |
| Cannon, George MD | Intermountain Health Holy Rosary Hospital | (406) 233-2600 |
| Cantway, Catherine MD | Butte Clinic - OB-GYN | (406) 496-3627 |
| Cantwell, Bryan MS, LCPC | Keystone Counseling Center | (406) 252-4194 |
| Cantwell, Lindsay FNP | Billings OB/GYN Associates PC | (406) 248-3607 |
| Carlisle, Alana NP | Intermountain Health St. Vincent Regional Hospital | (406) 238-7800 |