Gregory D Olsen DDS Msd PC
Gregory D Olsen DDS Msd PC is a healthcare organization registered as Orthodontics and Dentofacial Orthopedics Dentistry in Missoula, MT, holding Type 2 (organization) NPI 1861553117 since 2006. The authorized official on file is Gregory Olsen, President.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1861553117 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Gregory D Olsen DDS Msd PC |
| Practice address | 1221 S HIGGINS AVE, Missoula, MT, 59801 |
| Phone | 4065427572 |
| Fax | 4065427713 |
| Enumeration date | 2006-12-12 |
| Last updated in NPPES | 2020-08-22 |
Authorized official
| Name | Gregory Olsen |
|---|---|
| Title | President |
| Phone | 4065427572 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 1223X0400X | Orthodontics and Dentofacial Orthopedics Dentistry | Primary | 2134 | MT |
Copy-ready billing details
Provider: Gregory D Olsen DDS Msd PC NPI: 1861553117 Taxonomy: 1223X0400X (Orthodontics and Dentofacial Orthopedics Dentistry) Address: 1221 S HIGGINS AVE, Missoula, MT, 59801
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1962958470 | Brittney Martin | Individual | Physical Therapist | Missoula, MT |
| 1417515594 | Madison Leininger | Individual | Physical Therapist | Missoula, MT |
| 1932850021 | Range Physical Therapy & Wellness Pllc | Organization | Physical Therapy Clinic/Center | Missoula, MT |
| 1942930789 | Eating Disorder Center of Montana | Organization | Mental Health Counselor | Missoula, MT |
| 1598480311 | Tessa Lee | Individual | Mental Health Counselor | Missoula, MT |
| 1487379574 | Kristen Byrne | Individual | Mental Health Counselor | Missoula, MT |
| 1043156144 | Sarah Lucero | Individual | Massage Therapist | Missoula, MT |
| 1407788961 | Skye Everett | Individual | Physical Therapist | Missoula, MT |
Verify this record
Cross-check NPI 1861553117 against the authoritative CMS record: view Gregory D Olsen DDS Msd PC on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
Who is the authorized official for Gregory D Olsen DDS Msd PC?
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-08-22.