NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mrs. Carol Elizabeth Warren, MSW, CMHS, MHP, RC

Addiction (Substance Use Disorder) Counselor in Eugene, OR · enumerated 2006 · practices at Oslc Developments, Inc. - Clinic.

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

National Provider Identifier

1255494126

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Registry record

Entity type Individual (Type 1)
Name Mrs. Carol Elizabeth Warren
Credential MSW, CMHS, MHP, RC
Sex Female
Practice address Eugene, OR, 97401
Phone (206) 276-0883
Enumeration date Dec 19, 2006
Last updated in NPPES Mar 27, 2019

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License T-19-001 (OR) Primary
101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License RC00052955 (WA) Secondary

Other identifiers

Identifier Type State Issuer
500757201 Medicaid OR -

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

What is the NPI number for Carol Warren?
The National Provider Identifier (NPI) for Carol Warren is 1255494126, a Type 1 (individual) record in the CMS NPPES registry.
Where does Carol Warren practice?
The practice location on file with NPPES is in Eugene, OR. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-27.