Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Mark Andrew Wilk

Home Modifications Contractor in Phoenix, AZ · enumerated 2007.

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

National Provider Identifier

1790905131

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Registry record

Entity type Individual (Type 1)

Name Mr. Mark Andrew Wilk

Sex Male

Practice address 2011 W. Davis Road, Phoenix, AZ, 85023

Phone (602) 942-6421

Fax (602) 564-2840

Enumeration date Apr 26, 2007

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

171WH0202X Home Modifications Contractor Other Service Providers · License ROC 165112 (AZ) Primary

Other identifiers

Identifier	Type	State	Issuer
436908	Medicaid	AZ	-
631029	Medicaid	AZ	-

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 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.

What specialty is Mark Wilk?

Mark Wilk 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.