Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Gregory Davidson, D.N.

Naprapath in Skokie, IL · enumerated 2006.

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

National Provider Identifier

1528154879

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Registry record

Entity type Individual (Type 1)

Name Dr. Gregory Davidson

Credential D.N.

Sex Male

Practice address Skokie, IL, 60076

Phone (847) 224-9300

Fax (847) 675-3686

Enumeration date Oct 5, 2006

Last updated in NPPES Sep 11, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

174400000X Specialist Other Service Providers Secondary

172P00000X Naprapath Other 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

Where does Gregory Davidson practice?

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

What is the NPI number for Gregory Davidson?

The National Provider Identifier (NPI) for Gregory Davidson is 1528154879, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.