THOMAS TIETJEN M.D. NPI 1861553026

NPI Information

  • NPI: 1861553026
  • Provider Name: THOMAS TIETJEN, M.D.
  • Classification: Internal Medicine - 207RG0100X
  • Specialization: Gastroenterology
  • Entity Type: Individual
  • PECOS Registration: Yes
  • Address: 560 W MITCHELL ST
    SUITE M40
    PETOSKEY, MI
    ZIP 49770
  • Phone: (231) 487-2391

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NPI Details

Thomas Tietjen, M.D. is a gastroenterology internal medicine in Petoskey, MI. The provider is an internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs. Thomas Tietjen, M.D. NPI is 1861553026. The provider is registered as an individual entity type.

The NPPES NPI record indicates the provider is a male.

The provider's business location address is:

560 W MITCHELL ST
SUITE M40
PETOSKEY, MI
ZIP 49770-278
Phone: (231) 487-2391
Fax: (231) 487-6513

The NPI 1861553026 is registered in the Medicare Provider, Enrollment, Chain and Ownership System (PECOS). The provider is legally eligible to order and refer Power Mobility Devices.

The enumeration date for this NPI number is 12/12/2006 and was last updated on 12/24/2015.

Taxonomy Codes

The NPI record includes the healthcare provider taxonomy classification, state license number and state of licensure. The following information regarding the scope of practice of this provider is available:

No. Taxonomy Code Taxonomy Clasification Taxonomy Specialization License Number License State Primary
1207RG0100XInternal MedicineGastroenterologyTT077247MICHIGANYes

Other Identifiers

The following information regarding additional identifiers associated to this NPI record includes the other identifier number, identifier type, identifier state and issuer.

No. Other Provider Identifier Other Provider Identifier Type Other Provider Identifier State Other Provider Identifier Issuer
11861553026MEDICAIDMICHIGAN
2E82211MEDICARE UPINMICHIGAN

What is NPI?

NPI stands for National Provider Identifier. The NPI is a 10-digit identification number that is completely unique. The NPI number by itself does not contain any identifiable information such as a provider’s speciality or location. The NPI is assigned to individuals or organizacions for their lifespan and it is independent of key provider information type updates like a change of practices, location or speciality.

This page was last updated on: 11/21/2025

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