Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Tammy Jean Diehn, CNP

Nurse Practitioner in Mankato, MN · enumerated 2013 · practices at Health Services Pharmacy.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1366884892

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Registry record

Entity type Individual (Type 1)

Name Tammy Jean Diehn

Credential CNP

Sex Female

Practice address 21 Carkoski Commons, Mankato, MN, 56001

Phone (507) 389-6710

Enumeration date Jul 25, 2013

Last updated in NPPES Feb 7, 2014

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F0713967 (MN) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Tammy Diehn's NPI record?

Cross-check NPI 1366884892 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1366884892 active?

Yes, as of the latest NPPES snapshot, NPI 1366884892 is active (record last updated 2014-02-07).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-02-07.