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

Gregg P Clark

Home Modifications Contractor in Wilmington, DE · enumerated 2017.

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

National Provider Identifier

1053852608

Verified

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Registry record

Entity type Individual (Type 1)

Name Gregg P Clark

Sex Male

Practice address Wilmington, DE, 19809

Phone (302) 218-1137

Enumeration date Mar 15, 2017

Last updated in NPPES Mar 15, 2017

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

Taxonomy & licenses

171WH0202X Home Modifications Contractor Other Service Providers · License 1990063352 (DE) 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

What specialty is Gregg Clark?

Gregg Clark is registered in NPPES with the primary taxonomy of Home Modifications Contractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-15.