Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Eileen Nittler, MSW

Social Worker in Cottage Grove, OR · enumerated 2015.

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

National Provider Identifier

1124404090

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Registry record

Entity type Individual (Type 1)

Name Eileen Nittler

Credential MSW

Sex Female

Practice address 1345 Birch Avenue, Cottage Grove, OR, 97424

Phone (541) 942-3939

Enumeration date Aug 3, 2015

Last updated in NPPES Aug 3, 2015

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License M5137 (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 Eileen Nittler?

The National Provider Identifier (NPI) for Eileen Nittler is 1124404090, a Type 1 (individual) record in the CMS NPPES registry.

Where does Eileen Nittler practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-08-03.