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

Individual provider Internal Medicine Physician · NPI 1003838681

Mark J Tieszen, MD is an Internal Medicine Physician in Wyoming, Michigan. Works from 3 locations. Licensed in Michigan and North Dakota.

Licensed in
MI, ND
In the registry since
2006
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

5900 Byron Center Ave SW
Wyoming, MI 49519-9606
Phone: (616) 252-7200
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 601 John St, Kalamazoo, MI 49007-5341 — (269) 341-7762
  • 601 John St, Kalamazoo, MI 49007-5341 — (269) 341-7762

Specialties & licences

Critical Care Medicine (Internal Medicine) Physician (primary) Taxonomy 207RC0200X · Licence 4301108689 (MI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 4301108689 (MI)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 6606 (ND)

Record details

NPI number1003838681
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 24, 2006
Last updated in NPPESMarch 17, 2018

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