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Thomas Tietjen, M.D.
NPI 1861553026 · Gastroenterology Physician · Petoskey, MI
Thomas Tietjen, M.D. is a Gastroenterology Physician provider in Petoskey, MI (NPI 1861553026).
Provider details
- NPI number
- 1861553026
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- TT077247 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
560 W Mitchell St
Suite M40
Petoskey, MI 49770-2278
Phone: (231) 487-2391
Fax: (231) 487-6513
Street-level locationGet directions
Mailing address
859 Surrey Ln
Petoskey, MI 49770-9310
Registry dates
- Enumerated
- 2006-12-12
- Last updated
- 2015-12-24
Frequently asked questions
- What is Thomas Tietjen's NPI number?
- Thomas Tietjen's National Provider Identifier (NPI) is 1861553026, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Tietjen's specialty?
- Thomas Tietjen is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Tietjen located?
- Thomas Tietjen's practice location on file with NPPES is 560 W Mitchell St, Petoskey, MI 49770-2278.
- What is Thomas Tietjen's phone number?
- The practice phone number listed in the NPPES registry for Thomas Tietjen is (231) 487-2391.
- Is Thomas Tietjen's NPI active?
- Yes — Thomas Tietjen's NPI (1861553026) is active in the NPPES registry as of the last update on 2015-12-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.