Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Maryann Slack

Social Worker in Council Bluffs, IA · enumerated 2025.

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

National Provider Identifier

1932090842

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Registry record

Entity type Individual (Type 1)

Name Maryann Slack

Sex Female

Practice address 902 S 6th St, Council Bluffs, IA, 51501

Phone (712) 325-1990

Enumeration date Jul 10, 2025

Last updated in NPPES Jul 10, 2025

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 133678 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Maryann Slack?

Maryann Slack is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-10.