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Nancy Peterson Walz, Lcsw, P.C.

Clinical Social Worker in Crystal Lake, IL · enumerated 2012 · authorized official Nancy Peterson Walz, Owner/ Licensed Clinical Social Wor.

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

National Provider Identifier

1639436991

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Registry record

Entity type Organization (Type 2)
Legal business name Nancy Peterson Walz, Lcsw, P.C.
Other name <Unavail>
Practice address 7115 Virginia Rd, Suite 109, Crystal Lake, IL, 60014
Phone (815) 382-7029
Fax (815) 363-5584
Enumeration date Apr 11, 2012
Last updated in NPPES Apr 11, 2012

Taxonomy & classification

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 149005637 (IL) Primary

Authorized official

Name Nancy Peterson Walz
Title Owner/ Licensed Clinical Social Wor
Phone (815) 382-7029

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 type of organization is Nancy Peterson Walz, Lcsw, P.C.?
Nancy Peterson Walz, Lcsw, P.C. is registered in NPPES as a Clinical Social Worker (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-11.