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

Nicholas Thomas Thielen, MD

Individual provider Internal Medicine Physician · NPI 1326627902

Nicholas Thomas Thielen, MD is a Hospitalist in Sioux Falls, South Dakota. Qualified in 2021, 5 years ago. Practices with Sanford Clinic, a 273-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in South Dakota.

Years since qualifying
5
Licensed in
SD
In the registry since
2021
Specialties on file
3
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

1305 W 18th St
Sioux Falls, SD 57105-0401
Phone: (605) 328-4973
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1400 W 22nd St, Sioux Falls, SD 57105-1554 — (605) 357-1410

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 15504 (SD)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0607 (SD)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X (SD)

Record details

NPI number1326627902
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 2, 2021
Last updated in NPPESDecember 11, 2024
Certification dateDecember 11, 2024

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Sanford Clinic — 273 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Sioux Falls