NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cory Gilbert Vaassen

Hearing Instrument Specialist in Dubuque, IA · enumerated 2024.

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

National Provider Identifier

1427875400

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Cory Gilbert Vaassen
Sex Male
Practice address 3500 Dodge St Ste 105, Dubuque, IA, 52003
Phone (563) 583-4327
Enumeration date Sep 23, 2024
Last updated in NPPES Sep 23, 2024

Taxonomy & licenses

237700000X Hearing Instrument Specialist Speech, Language and Hearing Service Providers · License 123551 (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

How do I verify Cory Vaassen's NPI record?
Cross-check NPI 1427875400 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1427875400 active?
Yes, as of the latest NPPES snapshot, NPI 1427875400 is active (record last updated 2024-09-23).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-23.