
| Provider | Group Practice/Location | Office Phone |
| North, Bradley DO | Midway Clinic DBA Three Rivers Health | (307) 568-3311 |
| North, Bradley DO | South Big Horn County Hospital District DBA Three Rivers Health | (307) 568-3311 |
| North, Thomas DO | West Grand Clinic - Family Medicine | (406) 237-5353 |
| Novakovich, Ashley LCSW | Broadwater Clinic - Family Medicine | (406) 237-5200 |
| Novakovich, Ashley LCSW | Moxy Counseling LLC | (406) 272-7098 |
| Oakes, Michael MD | Diversified Radiology | (303) 914-8800 |
| Oakes, Michael MD | SJMG Radiology | (406) 723-2500 |
| Ogger, Kelly LCSW | Big Sky Behavioral Health PLLC | (406) 672-8411 |
| Oldham, Lorrie DO | SVHC Adult Critical Care | (406) 237-7200 |
| Olds, Jenna FNP | Cogent Healthcare of MT dba Sound Physicians | (406) 657-7000 |
| Olds, Jenna FNP | North Shiloh Clinic - Transitional Care Group | (406) 237-8282 |
| Olds, Jenna FNP | SVH Hospitalists | (406) 237-3850 |
| Oley, Erin FNP | Beartooth Billings Clinic | (406) 446-2345 |
| Oley, Erin FNP | Beartooth Billings Clinic - Clinic | (406) 446-2345 |
| Oley, William MD | Beartooth Billings Clinic | (406) 446-2345 |
| Oley, William MD | Beartooth Billings Clinic - Clinic | (406) 446-2345 |
| Oliver, Kynzie PA | Billings Dermatology PC - Billings (fka:Tallman Dermatology) | (406) 294-9515 |
| Olivo, Elizabeth DNP | Planned Parenthood of MT - Great Falls | (406) 454-3431 |
| Olivo, Elizabeth DNP | Planned Parenthood of MT - Heights | (406) 869-5040 |
| Olivo, Elizabeth DNP | Planned Parenthood of MT - Helena | (406) 443-7676 |
| Olivo, Elizabeth DNP | Planned Parenthood of MT - Missoula | (406) 728-5490 |
| Olivo, Elizabeth DNP | Planned Parenthood of MT - West | (406) 656-9980 |
| Olorunfemi, Paul MD | SJMG Heart Center | (406) 723-2420 |
| Olson, Catherine OD | Ophthalmic Associates of Billings LLC | (406) 256-6000 |
| Olson-Meyer, Sharda LCSW | Sentinel Mental Health Inc | (406) 272-2511 |