| Nichols, Robert MD | SVHC Mountainview Clinic | (406) 446-3800 |
| Nichols, Robert MD | SVHC Heights Family Practice | (406) 237-8300 |
| Nichols, Patricia LCPC | Positive Solutions | (406) 670-3956 |
| Nicholson , Mark MD | SVHC Behavioral Health | (406) 237-3585 |
| Nicholson , Mark MD | Mark H. Nicholson MD PLLC | (406) 245-1559 |
| Nicholson , Mark MD | Sound Physicians | (406) 237-7000 |
| Nicholson , Mark MD | SVH Hospitalists | (406) 237-3850 |
| Nicholson , Mark MD | RiverStone Health Clinic | (406) 247-3350 |
| Nicholson , Laura MD | The Children's Clinic of Billings - Outpatient | (406) 281-8700 |
| Nicholson , Laura MD | The Children's Clinic of Billings, PC | (406) 281-8700 |
| Nicholson , Laura MD | SVHC Fortin Pediatric Specialty Clinic | (406) 237-5300 |
| Nicola, Marcus FNP | SVH Montana Heart Institute | (406) 237-5001 |
| Ning, Theodore MD | SVHC Yellowstone Urology | (406) 237-5400 |
| Nordstrom, Timothy LCSW | SVHC Internal Medicine | (406) 238-6900 |
| Northern Rockies Surgery Center | Northern Rockies Surgery Center | (406) 248-7186 |
| Novakovich, Ashley LCSW | SVHC Broadwater | (406) 237-5200 |
| Nynas, Marcus DC | Billings Family Chiropractic, Inc. | (406) 294-2820 |
| Odackal, Namrita DO | SVH Neonatology | (406) 237-7076 |
| Ogger, Kelly LCSW | Yellowstone Boys & Girls Ranch | (406) 655-2100 |
| Okamura, Daryl MD | SVHC Fortin Pediatric Specialty Clinic | (406) 237-5300 |
| Oldenburg, Lee LCPC | Oldenburg Counseling, PC | (406) 245-4446 |
| Olds, Jenna FNP | SVHC Billings Transitional Care | (406) 237-8282 |
| Oley, Erin FNP | Beartooth Billings Clinic | (406) 446-2345 |
| Oley, William MD | Beartooth Billings Clinic | (406) 446-2345 |
| Olivo, Elizabeth DNP | Planned Parenthood of Montana - Helena | (406) 446-7676 |
