Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Arionna L Willis

Social Worker in Saint Louis, MO · enumerated 2019 · practices at Missouri Residential Care LLC.

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

National Provider Identifier

1639710445

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Registry record

Entity type Individual (Type 1)

Name Arionna L Willis

Sex Female

Practice address 7700 Minnesota Ave, Saint Louis, MO, 63111

Phone (314) 206-3700

Enumeration date Oct 2, 2019

Last updated in NPPES Oct 2, 2019

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1639710445 active?

Yes, as of the latest NPPES snapshot, NPI 1639710445 is active (record last updated 2019-10-02).

How do I verify Arionna Willis's NPI record?

Cross-check NPI 1639710445 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 2019-10-02.