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DR. TRACY M DIEFENBACH PHD MRMS CCTP
NPI 1649940115
Specialist - Research Study in Fosston, MN

Active since September 16, 2021
816 2ND ST NE, FOSSTON, MN 56542(218) 637-0399 Get Directions Write a Review

NPPES record last updated: September 18, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 18, 2025, Sep 16, 2021 (2 updates tracked since 2021).

About Dr. Tracy M Diefenbach Phd Mrms Cctp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. TRACY M DIEFENBACH PHD MRMS CCTP (NPI 1649940115) is an individual research study provider in Fosston, Minnesota and active in the NPI registry since September 2021.

NPPES Registry Identity

NPI1649940115
Entity TypeIndividualFemale
Primary Taxonomy1744R1102X
Provider Legal NameDR. TRACY M DIEFENBACHCredential: PHD MRMS CCTP
Location Address816 2ND ST NEFosston, MN 56542-1519
Mailing Address816 2nd St NeFosston, MN 56542-1519 · (218) 637-0399
Phone(218) 637-0399
Sole ProprietorNo
Enumeration DateSeptember 16, 2021
Last NPPES UpdateSeptember 18, 20252 updates tracked since enumeration
NPPES CertifiedSeptember 18, 2025
✔ NPI 1649940115 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialist · Research StudyOther Service Providers
Taxonomy Code1744R1102X
816 2ND ST NE, Fosston, MN 56542
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Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

THE MRMS RESEARCH FOUNDATION
Specialist (Research Study)
816 2ND ST NE
FOSSTON, MN 56542
Polk County (218) 637-0399

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Tracy Diefenbach's NPI number?

The NPI number for Tracy Diefenbach is 1649940115. It was assigned to this individual provider in the NPPES registry on September 16, 2021.

Where is Tracy Diefenbach located?

Tracy Diefenbach practices at 816 2nd St NE, Fosston, MN 56542. The listed phone number is (218) 637-0399.

What is Tracy Diefenbach's specialty?

The primary specialty registered for this NPI is Specialist, specializing in Research Study, with taxonomy code 1744R1102X.

When was this NPI record last updated?

The NPPES record for Tracy Diefenbach was last updated on September 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.