Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cassandra Dierker, M.S.

Counselor in Quincy, IL · enumerated 2012.

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

National Provider Identifier

1437402385

Verified

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Registry record

Entity type Individual (Type 1)

Name Cassandra Dierker

Credential M.S.

Sex Female

Practice address 4604 Jayden Ct, Quincy, IL, 62305

Phone (417) 464-9254

Enumeration date Oct 16, 2012

Last updated in NPPES Oct 16, 2012

Taxonomy & licenses

101Y00000X Counselor 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 1437402385 active?

Yes, as of the latest NPPES snapshot, NPI 1437402385 is active (record last updated 2012-10-16).

How do I verify Cassandra Dierker's NPI record?

Cross-check NPI 1437402385 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-16.