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

Karen S Tjaden, MD

Individual provider Family Medicine Physician · NPI 1598768251

Karen S Tjaden, MD is a Hospitalist in Bismarck, North Dakota. Qualified in 1998, 28 years ago. Practices with Sanford Bismarck, a 561-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in North Dakota and South Dakota.

Years since qualifying
28
Licensed in
ND, SD
In the registry since
2005
Specialties on file
2
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

300 N 7th St
Bismarck, ND 58501-4439
Phone: (701) 323-6000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 71 Charles St, Deadwood, SD 57732 — (605) 717-6431

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 21598 (ND)
Family Medicine Physician Taxonomy 207Q00000X · Licence 4904 (SD)

Record details

NPI number1598768251
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 24, 2005
Last updated in NPPESNovember 8, 2024
Certification dateNovember 8, 2024

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolOTHER
Graduated 1998 (28 years in practice)
Group practice Sanford Bismarck — 561 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Bismarck