Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mark S Claussen, MD

Individual provider Surgery Physician · NPI 1447278171

Mark S Claussen, MD is a General Surgery in Bemidji, Minnesota. Graduated from University of Minnesota Medical School in 1989, 37 years ago. Practices with Sanford Health of Northern Minnesota, a 349-clinician group and accepts Medicare assignment. Licensed in Minnesota.

Years since qualifying
37
Trained at
University of Minnesota Medical School
Licensed in
MN
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1233 34th St NW
Bemidji, MN 56601-5112
Phone: (218) 333-5283
Fax: (218) 759-5279
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 36995 (MN)

Record details

NPI number1447278171
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 18, 2006
Last updated in NPPESMarch 29, 2022
Certification dateMarch 29, 2022
Mailing address1233 34th St Nw, Bemidji, MN 56601-5112

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGENERAL SURGERY
Medical schoolUNIVERSITY OF MINNESOTA MEDICAL SCHOOL
Graduated 1989 (37 years in practice)
Group practice Sanford Health Of Northern Minnesota — 349 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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