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

Thomas Tietjen, MD

Individual provider Gastroenterology Physician · NPI 1861553026

Thomas Tietjen, MD is a Gastroenterology Physician in Petoskey, Michigan. Licensed in Michigan. Registered with an NPI since 2006.

Licensed in
MI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

560 W Mitchell St Ste M40
Petoskey, MI 49770-2278
Phone: (231) 487-2391
Fax: (231) 487-6513
Show map & directions

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

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence TT077247 (MI)

Record details

NPI number1861553026
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 12, 2006
Last updated in NPPESDecember 24, 2015
Mailing address859 Surrey Ln, Petoskey, MI 49770-9310

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