Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Dewayne W Mack, REGISTERED NURSE

Q: What is the NPI number for Dewayne Mack?

The National Provider Identifier (NPI) for Dewayne Mack is 1639472699, a Type 1 (individual) record in the CMS NPPES registry.

Case Management Registered Nurse in Alexandria, VA · enumerated 2010.

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

National Provider Identifier

1639472699

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Registry record

Entity type Individual (Type 1)

Name Mr. Dewayne W Mack

Credential REGISTERED NURSE

Sex Male

Practice address 8119 Holland Rd, Alexandria, VA, 22306

Phone (703) 360-6910

Enumeration date Dec 14, 2010

Last updated in NPPES Dec 14, 2010

Taxonomy & licenses

163WC0400X Case Management Registered Nurse Nursing Service Providers · License 0001142876 (VA) 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 Dewayne Mack practice?

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

What is the NPI number for Dewayne Mack?

The National Provider Identifier (NPI) for Dewayne Mack is 1639472699, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-12-14.