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

Mrs. Sonja Ann Wilder, CADC I

Addiction (Substance Use Disorder) Counselor in Klamath Falls, OR · enumerated 2011.

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

National Provider Identifier

1982901120

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Registry record

Entity type Individual (Type 1)
Name Mrs. Sonja Ann Wilder
Credential CADC I
Sex Female
Practice address Klamath Falls, OR, 97603
Phone (541) 884-5244
Fax (541) 884-1105
Enumeration date Feb 24, 2011
Last updated in NPPES Aug 31, 2016

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 06-11-52 (OR) Primary

Other identifiers

Identifier Type State Issuer
136460 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 Sonja Wilder?
The National Provider Identifier (NPI) for Sonja Wilder is 1982901120, a Type 1 (individual) record in the CMS NPPES registry.
Where does Sonja Wilder practice?
The practice location on file with NPPES is in Klamath Falls, 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 2016-08-31.