| Provider | Group Practice/Location | Office Phone |
| Yepez, Marissa FNP-C | Children\'s Clinic of Billings - Westend | (406) 281-8700 |
| Yim, Douglas MD | Diversified Radiology | (303) 914-8800 |
| Yim, Douglas MD | SJMG Radiology | (406) 723-2500 |
| Yonts, Shannon MD | Children\'s Clinic of Billings - Outpatient | (406) 281-8700 |
| Yonts, Shannon MD | Children\'s Clinic of Billings - Westend | (406) 281-8700 |
| Yoon, Brian DO | Holy Rosary Hospital - General Surgery Clinic | (406) 233-2500 |
| Yorgason, Michael MD | Ortho Montana PSC | (406) 237-5050 |
| Yorgason, Michael MD | Ortho Montana PSC - Westend | (406) 237-5050 |
| Yorgason, Michael MD | Intermountain Health Holy Rosary Hospital | (406) 233-2600 |
| Yorgason, Michael MD | Intermountain Health Holy Rosary Hospital - Orthopedics | 406-223-4000 |
| Yorgason, Michael MD | Ortho Montana PSC - Miles City | 406-237-5050 |
| Yost, Brian DO | SJMG Montana Orthopedics | (406) 496-3400 |
| Young, Laurie LCSW | Highland Mountains Counseling | (406) 299-2812 |
| Yutzy, Gerald MD | NEMHS - Poplar Community Hospital | (406) 768-6100 |
| Yutzy, Gerald MD | NEMHS - Trinity Hospital | (406) 653-6500 |
| Zacharias, Claudia MD | NEMHS - Poplar Community Hospital | (406) 768-6100 |
| Zacharias, Claudia MD | NEMHS - Trinity Hospital | (406) 653-6500 |
| Zacharias, Kurt MD | NEMHS - Poplar Community Hospital | (406) 768-6100 |
| Zacharias, Kurt MD | NEMHS - Trinity Hospital | (406) 653-6500 |
| Zard, Kaylee DC | Meier Chiropractic - West | (406) 651-5433 |
| Zavala, Jeffrey MD | Broadwater Clinic - Family Medicine | (406) 237-5200 |
| Zavala, Jeffrey MD | Broadwater Clinic - Walk-in | (406) 237-8550 |
| Zavala, Jeffrey MD | Laurel Clinic - Family Medicine | (406) 628-6311 |
| Zavala, Jeffrey MD | N. 27th Walk-in Clinic | (406) 237-5110 |
| Zavala, Jeffrey MD | North Shiloh Clinic - Family Medicine | (406) 237-8989 |