Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cassandra Mackin, MSW

Social Worker in Granite City, IL · enumerated 2022.

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

National Provider Identifier

1578271946

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Registry record

Entity type Individual (Type 1)

Name Cassandra Mackin

Credential MSW

Sex Female

Practice address 50 Northgate Industrial Dr, Granite City, IL, 62040

Phone (161) 887-7442

Enumeration date Nov 14, 2022

Last updated in NPPES Nov 14, 2023

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers Secondary

104100000X Social Worker Behavioral Health & Social Service Providers · License 150.112289 (IL) 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 Cassandra Mackin's NPI record?

Cross-check NPI 1578271946 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1578271946 active?

Yes, as of the latest NPPES snapshot, NPI 1578271946 is active (record last updated 2023-11-14).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-14.