Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Madeline Paige Johnson, LMSW

Social Worker in Ottumwa, IA · enumerated 2026.

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

National Provider Identifier

1891621934

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Registry record

Entity type Individual (Type 1)

Name Madeline Paige Johnson

Credential LMSW

Sex Female

Practice address 1527 Albia Rd, Ottumwa, IA, 52501

Phone (641) 682-8772

Fax (641) 682-1924

Enumeration date Jun 18, 2026

Last updated in NPPES Jun 18, 2026

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 110631 (IA) 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.

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Frequently asked questions

How do I verify Madeline Johnson's NPI record?

Cross-check NPI 1891621934 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1891621934 active?

Yes, as of the latest NPPES snapshot, NPI 1891621934 is active (record last updated 2026-06-18).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-18.