Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Mitchell Donald Willis, LCSW

Social Worker in Topeka, KS · enumerated 2006.

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

National Provider Identifier

1578590220

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Registry record

Entity type Individual (Type 1)

Name Mr. Mitchell Donald Willis

Credential LCSW

Sex Male

Practice address 2200 Sw Gage Blvd, Topeka, KS, 66622

Phone (785) 350-3111

Enumeration date Jun 27, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 559 (OK) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW 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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Mitchell Willis's NPI record?

Cross-check NPI 1578590220 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1578590220 active?

Yes, as of the latest NPPES snapshot, NPI 1578590220 is active (record last updated 2007-07-08).

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