Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Harry Davis

Q: What is the NPI number for Harry Davis?

The National Provider Identifier (NPI) for Harry Davis is 1003056789, a Type 1 (individual) record in the CMS NPPES registry.

Hearing Instrument Specialist in Chicago, IL · enumerated 2009.

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

National Provider Identifier

1003056789

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Registry record

Entity type Individual (Type 1)

Name Harry Davis

Sex Male

Practice address 25 E Washington St Ste 1817, Chicago, IL, 60602

Phone (636) 397-6966

Fax (636) 397-6836

Enumeration date Feb 20, 2009

Last updated in NPPES Apr 25, 2018

Taxonomy & licenses

237700000X Hearing Instrument Specialist Speech, Language and Hearing Service Providers Secondary

237700000X Hearing Instrument Specialist Speech, Language and Hearing Service Providers · License 1542 (NC) 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

Where does Harry Davis practice?

The practice location on file with NPPES is in Chicago, IL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Harry Davis?

The National Provider Identifier (NPI) for Harry Davis is 1003056789, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-04-25.