| Provider | Group Practice/Location | Office Phone |
| Lucas, Martin MD | Intermountain Health Holy Rosary Hospital | (406) 233-2600 |
| Luellen, Allison PA-C | Intermountain Montana Virtual Care Clinic | (406) 237-5110 |
| Luem, C Nick MD | Yellowstone Pathologists PC - Bozeman | (406) 585-1004 |
| Luem, C Nick MD | Yellowstone Pathology Institute Inc | (406) 238-6360 |
| Luem, C. Nick MD | Yellowstone Pathologists PC - Billings | (406) 238-6360 |
| Luem, C. Nick MD | Yellowstone Pathology Institute Inc - Billings | (406) 238-6360 |
| Lugonjic, Sara DO | St. Vincent Regional Hospital Neurology Service | (406) 237-3850 |
| Lugonjic, Sara DO | Intermountain Health St. Vincent Regional Hospital | (406) 238-7800 |
| Lugonjic, Sara DO | St. Vincent Regional Hospital - Adult Critical Care | (406) 237-7200 |
| Lundby, Brandy LCPC | ||
| Lundby, Brandy LCPC | Turnwell Mental Health of Montana PC, DBA Montana Psychiatry PLLC - Grand | (406) 839-2985 |
| Lundby, Brandy LCPC | Turnwell Mental Health of Montana, PC DBA Montana Psychiatry PLLC - 24th Street | (406) 839-2985 |
| Lundby, Brandy LCPC | Turnwell Mental Health of Montana, PC DBA Montana Psychiatry PLLC - Bozeman | (406) 839-2985 |
| Lundgren, Chelsea CRNP | Children\'s Clinic of Billings - Outpatient | (406) 281-8700 |
| Lundgren, Chelsea CRNP | Children\'s Clinic of Billings - Westend | (406) 281-8700 |
| Lundin, Ashley LCPC | Yellowstone Boys & Girls Ranch | (406) 656-3112 |
| Lundin, Matthew PA | St. James Hospital - Cancer Centers of Montana | (406) 723-2999 |
| Lundin, Matthew PA | Intermountain Health St. James Hospital | 406-723-2500 |
| Lybrand, Kyle MD | Ortho Montana PSC | (406) 237-5050 |
| Lybrand, Kyle MD | SVHC Ortho MT - Trauma | (406) 237-5050 |
| Lyders, Eric MD | Diversified Radiology | (303) 914-8800 |
| Lyders, Eric MD | SJMG Radiology | (406) 723-2500 |
| Lynn, Matthew MD | Diversified Radiology | (303) 914-8800 |
| Lynn, Matthew MD | SJMG Radiology | (406) 723-2500 |
| Lyson, Cheryl LCPC | Downtown Clinic - Behavioral Health Associates | (406) 237-3585 |