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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. David F. Wiltzius, LPC

Professional Counselor in Fond Du Lac, WI · enumerated 2007 · practices at Optum Behavioral Care of Colorado, P.C..

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

National Provider Identifier

1811101421

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Registry record

Entity type Individual (Type 1)
Name Mr. David F. Wiltzius
Credential LPC
Sex Male
Practice address 196 3rd St, Fond Du Lac, WI, 54935
Phone (920) 921-3343
Fax (920) 921-0989
Enumeration date May 10, 2007
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 780-125 (WI) Primary
LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC credential

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

Is NPI 1811101421 active?
Yes, as of the latest NPPES snapshot, NPI 1811101421 is active (record last updated 2007-07-08).
How do I verify David Wiltzius's NPI record?
Cross-check NPI 1811101421 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.