Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Gregory Walton Williams, M.S.

Paramedic in Mount Weather, VA · enumerated 2013.

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

National Provider Identifier

1639415193

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Registry record

Entity type Individual (Type 1)

Name Mr. Gregory Walton Williams

Credential M.S.

Sex Male

Practice address 19844 Blueridge Mountain Rd, Mount Weather, VA, 20135

Phone (540) 542-3986

Fax (540) 542-3065

Enumeration date Jan 2, 2013

Last updated in NPPES Jan 2, 2013

Taxonomy & licenses

146L00000X Paramedic Emergency Medical Service Providers · License 090599 (PA) Secondary

146L00000X Paramedic Emergency Medical Service Providers · License E081610702 (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

Is NPI 1639415193 active?

Yes, as of the latest NPPES snapshot, NPI 1639415193 is active (record last updated 2013-01-02).

How do I verify Gregory Williams's NPI record?

Cross-check NPI 1639415193 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-02.