Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Warren Zimmermann Jr., RN, MSN

Administrator Registered Nurse in Warrenton, OR · enumerated 2016.

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

National Provider Identifier

1427419258

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Registry record

Entity type Individual (Type 1)

Name Warren Zimmermann Jr.

Credential RN, MSN

Sex Male

Practice address 65 N Highway 101, Suite 204, Warrenton, OR, 97146

Phone (503) 325-0241

Fax (503) 861-2043

Enumeration date Mar 7, 2016

Last updated in NPPES Mar 7, 2016

Taxonomy & licenses

163WA2000X Administrator Registered Nurse Nursing Service Providers · License 200842712RN (OR) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

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 Warren Zimmermann?

The National Provider Identifier (NPI) for Warren Zimmermann is 1427419258, a Type 1 (individual) record in the CMS NPPES registry.

Where does Warren Zimmermann practice?

The practice location on file with NPPES is in Warrenton, 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 2016-03-07.