Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Harriet I Walker, PHD, CADC-III, NCGC

Addiction (Substance Use Disorder) Counselor in Woodruff, WI · enumerated 2006.

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

National Provider Identifier

1427098045

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Registry record

Entity type Individual (Type 1)

Name Harriet I Walker

Credential PHD, CADC-III, NCGC

Sex Female

Practice address 311 Elm St, Woodruff, WI, 54568

Phone (715) 356-8540

Enumeration date Jun 8, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 11530 (WI) Primary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 2359-057 (WI) Secondary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier	Type	State	Issuer
43565100	Medicaid	WI	-

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

Where does Harriet Walker practice?

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

What is the NPI number for Harriet Walker?

The National Provider Identifier (NPI) for Harriet Walker is 1427098045, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.