| Laird, Travis DPT | Ortho Montana, PSC | (406) 237-5050 |
| Lamm, Frank MD | SVH Frontier Cancer Center | (406) 238-6290 |
| Lammers, Richard DO | SVH Emergency Department | (406) 237-4116 |
| LaMonaca, Juliet PsyD | Juliet LaMonaca PsyD LLC | (406) 969-6210 |
| Lanciers , Sophie MD | SVHC Fortin Pediatric Specialty Clinic | (406) 237-5300 |
| Lanciers , Sophie MD | SVHC Weight Management Clinic | (406) 237-4580 |
| Langdon, Daniel MD | SJMG Radiation Oncology | (406) 723-2621 |
| Langohr, Janis MD | SJMG Rocky Mountain Clinic | (406) 496-3633 |
| Langohr, Janis MD | The Children's Clinic of Billings - Outpatient | (406) 281-8700 |
| Langohr, Janis MD | The Children's Clinic of Billings, PC | (406) 281-8700 |
| Larson, Lisa DC | Larson Chiropractic Clinic, PC | (406) 259-4393 |
| LaRue, Kimberly RD | SVHC Fortin Pediatric Specialty Clinic | (406) 237-5300 |
| Lashus, Andrew MD | SVH Emergency Department | (406) 237-4116 |
| Lashus, Andrew MD | SJMG Heart Center | (406) 723-2420 |
| Lashus, Andrew MD | SVHC Fortin Pediatric Specialty Clinic | (406) 237-5300 |
| Leaird , Alma MD | SVH Rheumatology | (406) 237-5780 |
| Leber, Eric PA-C | SJMG Emergency Physicians | (406) 723-2585 |
| Lebsock, Shawn OD | Drs. McBride & McBride Optometrists, PC | (406) 656-7605 |
| Lehman, Dustin LCPC | Dustin Lehman, MS LCPC Inc | (406) 259-6161 |
| Lemberger, Michelle MD | SJMG OB/GYN | (406) 496-3627 |
| Lemelin, Charise MSW LCSW | Yellowstone Boys & Girls Ranch | (406) 655-2100 |
| Levesque, Ali LCPC | Yellowstone Boys & Girls Ranch | (406) 655-2100 |
| Levesque, Ali LCPC | Yellowstone Boys & Girls Ranch - Clinic | (406) 655-2100 |
| Lew, DeKrisha MD | SVHC Bozeman Clinic | (406) 556-5888 |
| Lew, DeKrisha MD | SVHC Broadwater | (406) 237-5200 |
