Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dawn M Zak, MS, LPC, CSAC

Addiction (Substance Use Disorder) Counselor in Port Washington, WI · enumerated 2005.

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

National Provider Identifier

1356332464

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Registry record

Entity type Individual (Type 1)

Name Dawn M Zak

Credential MS, LPC, CSAC

Sex Female

Practice address 1777 W Grand Ave, Port Washington, WI, 53074

Phone (262) 268-6637

Fax (262) 268-6615

Enumeration date Oct 31, 2005

Last updated in NPPES Jun 21, 2019

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 5924-125 (WI) Secondary

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 1321 (WI) Primary

LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC credential

Other identifiers

Identifier	Type	State	Issuer
42138800	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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Dawn Zak?

Dawn Zak 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 2019-06-21.