Mark Tieszen, MD
NPI 1003838681 · Critical Care Medicine (Internal Medicine) Physician · Wyoming, MI
Mark Tieszen, MD is a Critical Care Medicine (Internal Medicine) Physician provider in Wyoming, MI (NPI 1003838681).
Provider details
- NPI number
- 1003838681
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301108689 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
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
3 documented practice locations
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
Mailing address
Additional practice locations (2)
- 601 John StSuite M-510Kalamazoo, MI 49007-5341Phone: (269) 341-7762Fax: (269) 341-8098
- 601 John StSuite M-510Kalamazoo, MI 49007-5341Phone: (269) 341-7762Fax: (269) 341-8098
Registry dates
- Enumerated
- 2006-07-24
- Last updated
- 2018-03-17
Frequently asked questions
- What is Mark Tieszen's NPI number?
- Mark Tieszen's National Provider Identifier (NPI) is 1003838681, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Tieszen's specialty?
- Mark Tieszen is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Tieszen located?
- Mark Tieszen's practice location on file with NPPES is 5900 Byron Center Ave Sw, Wyoming, MI 49519-9606.
- What is Mark Tieszen's phone number?
- The practice phone number listed in the NPPES registry for Mark Tieszen is (616) 252-7200.
- Is Mark Tieszen's NPI active?
- Yes — Mark Tieszen's NPI (1003838681) is active in the NPPES registry as of the last update on 2018-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.