Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Leslie Catherine Tietjen

Nurse Practitioner in Medford, OR · enumerated 2019.

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

National Provider Identifier

1164071858

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Registry record

Entity type Individual (Type 1)

Name Leslie Catherine Tietjen

Sex Female

Practice address 520 Medical Center Dr Ste 200, Medford, OR, 97504

Phone (541) 930-7222

Fax (541) 930-7220

Enumeration date Sep 5, 2019

Last updated in NPPES Aug 1, 2023

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 7010 (MN) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 202004995NP-PP (OR) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Leslie Tietjen?

The National Provider Identifier (NPI) for Leslie Tietjen is 1164071858, a Type 1 (individual) record in the CMS NPPES registry.

Where does Leslie Tietjen practice?

The practice location on file with NPPES is in Medford, OR. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-01.