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

Sara Naomi Wallace -Tomczak, SACIT, MT, IDP-AT

Addiction (Substance Use Disorder) Counselor in Eau Claire, WI · enumerated 2008 · practices at Lutheran Social Services of Wisconsin and Upper Michigan, Inc..

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

National Provider Identifier

1699928440

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Registry record

Entity type Individual (Type 1)

Name Sara Naomi Wallace -Tomczak

Credential SACIT, MT, IDP-AT

Sex Female

Practice address Eau Claire, WI, 54701

Phone (715) 835-9110

Fax (715) 830-4098

Enumeration date Oct 24, 2008

Last updated in NPPES Oct 24, 2008

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 14558-130 (WI) 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.

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Frequently asked questions

What specialty is Sara Wallace -Tomczak?

Sara Wallace -Tomczak is registered in NPPES with the primary taxonomy of Addiction (Substance Use Disorder) Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-24.