Mark S Claussen, MD
Mark S Claussen is a Surgery Physician provider (Surgery) practicing in Bemidji, MN, registered in the NPPES registry with NPI 1447278171 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1447278171 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mark S Claussen |
| Credential | MD |
| Sex | Male |
| Practice address | 1233 34TH ST NW, Bemidji, MN, 56601 |
| Phone | 2183335283 |
| Fax | 2187595279 |
| Enumeration date | 2006-07-18 |
| Last updated in NPPES | 2022-03-29 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208600000X | Surgery Physician | Primary | 36995 | MN |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Copy-ready billing details
Provider: Mark Claussen, MD NPI: 1447278171 Taxonomy: 208600000X (Surgery Physician) Address: 1233 34TH ST NW, Bemidji, MN, 56601
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1023076064 | Benjamin Roy | Individual | Surgery Physician | Bemidji, MN |
| 1033167416 | Matthew Sanford | Individual | Diagnostic Radiology Physician | Bemidji, MN |
| 1538113907 | Joginder Singh | Individual | Hematology & Oncology Physician | Bemidji, MN |
| 1326086968 | Chukwuma Ogugua | Individual | Pulmonary Disease Physician | Bemidji, MN |
| 1326080649 | Suzanne Human | Individual | Family Medicine Physician | Bemidji, MN |
| 1780628149 | Sanford Health of Northern Minnesota | Organization | Internal Medicine Physician | Bemidji, MN |
| 1487685582 | Neil Skogerboe | Individual | Family Medicine Physician | Bemidji, MN |
| 1013934017 | Wai Lun Chan | Individual | Hospitalist Physician | Bemidji, MN |
Verify this record
Cross-check NPI 1447278171 against the authoritative CMS record: view Mark S Claussen 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
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2022-03-29.