| Provider | Group Practice/Location | Office Phone |
| Zilkoski, Mark MD | NEMHS- Faith Lutheran Home | (406) 653-6421 |
| Zilkoski, Mark MD | NEMHS- Listerid Rural Health Clinic | (406) 653-2501 |
| Zilkoski, Mark MD | NEMHS- Poplar Community Hospital | (406) 768-6100 |
| Zilkoski, Mark MD | NEMHS- Riverside Family Clinic | (406) 768-5171 |
| Zilkoski, Mark MD | NEMHS- Trinity Hospital | (406) 653-6500 |
| Zimmer, Chelby LAC | Rimrock Foundation | (406) 248-3175 |
| Zimmerman, Katherine FNP | Heights Clinic - Family Medicine | (406) 237-8300 |
| Zimmerman, Katherine FNP | Intermountain Health West End Clinic - Family Medicine | (406) 901-2300 |
| Zohn, Raphael MD | NEMHS - Poplar Community Hospital | (406) 768-6100 |
| Zohn, Raphael MD | NEMHS - Trinity Hospital | (406) 653-6500 |
| Zolyan, Anna MD | St. Vincent Regional Hospital Neurology Service | (406) 237-3850 |
| Zolyan, Anna MD | Intermountain Health St. Vincent Regional Hospital | (406) 238-7800 |
| Zolyan, Anna MD | St. Vincent Regional Hospital - Adult Critical Care | (406) 237-7200 |
| Zuck, Amanda CRNA | Holy Rosary Hospital - Primary Care Clinic | (406) 233-2500 |
| Zuck, Amanda CRNA | Holy Rosary Healthcare Anesthesia | (406) 233-2600 |
| Zuehlke, Peter DO | NEMHS - Poplar Community Hospital | (406) 768-6100 |
| Zuehlke, Peter DO | NEMHS - Trinity Hospital | (406) 653-6500 |
| Zupan, Katie PA-C | Beartooth Billings Clinic | (406) 446-2345 |
| Zupan, Katie PA-C | Beartooth Billings Clinic - Clinic | (406) 446-2345 |
| Zupan, Katie PA-C | Roundup Memorial Healthcare | (406) 323-2301 |
| Zupan, Katie PA-C | Roundup Memorial Healthcare Clinic | (406) 323-3337 |