| Provider | Group Practice/Location | Office Phone |
| Crane, Alicia DNP, FNP | Holy Rosary Hospital - Primary Care Clinic | (406) 233-2500 |
| Crellin, Katie ACNP | Eastern Radiological Associates | (406) 237-5490 |
| Cripps, Jessyca MD | Children\'s Clinic of Billings - Outpatient | (406) 281-8700 |
| Cripps, Jessyca MD | Children\'s Clinic of Billings - Westend | (406) 281-8700 |
| Crnkovich, Francis MD | Diversified Radiology | (303) 914-8800 |
| Cross, Jennifer OD | Billings Family Eyecare Shiloh PLLC | (406) 245-2436 |
| Cross, Jennifer OD | Billings Family Optical | (406) 245-2299 |
| Cross, Lynette FNP | Downtown Clinic - Internal Medicine | (406) 238-6900 |
| Cross, Gregory MD | Midway Clinic DBA Three Rivers Health | (307) 568-3311 |
| Cross, Gregory MD | Pioneer Medical Center | (406) 932-4603 |
| Cross, Gregory MD | South Big Horn Hospital District dba Three Rivers Health | (307) 568-3311 |
| Cross, Gregory MD | Wheatland Memorial Hospital | (406) 632-4351 |
| Cross, Gregory MD | Wheatland Memorial Healthcare Clinic | (406) 632-4343 |
| Crouch, Valleri LAC | Mental Health Center - Big Timber | (406) 932-5924 |
| Crouch, Valleri LAC | Mental Health Center - Billings | (406) 252-5658 |
| Crouch, Valleri LAC | Mental Health Center - Columbus | (406) 322-4514 |
| Crouch, Valleri LAC | Mental Health Center - Lewistown | (406) 538-7483 |
| Crouch, Valleri LAC | Mental Health Center - Red Lodge | (406) 446-2500 |
| Crouch, Valleri LAC | Mental Health Center - Roundup | (406) 323-1142 |
| Cunningham, Jason APRN | Roundup Memorial Healthcare | (406) 323-2301 |
| Cunningham, Jason APRN | Roundup Memorial Healthcare Clinic | (406) 323-3337 |
| Cunningham, Kristopher MD | Cogent Healthcare of MT dba Sound Physicians | (406) 657-7000 |
| Cunningham, Kristopher MD | SVH Hospitalists | (406) 237-3850 |
| Cunningham, Kristopher MD | St. Vincent Regional Hospital - Adult Critical Care | (406) 237-7200 |
| Currence, Robert OD | Beartooth Vision Center PC | (406) 652-9339 |