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
Mailing address5900 Byron Center Ave Sw, Medical Administration, Wyoming, MI 49519-9606

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