Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John Berrtrum Williams, BMS
Counselor in Las Vegas, NM · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639461031
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Registry record
Entity type Individual (Type 1)
Name John Berrtrum Williams
Credential BMS
Sex Male
Practice address 2503 Ridge Runner Rd, Las Vegas, NM, 87701
Phone (505) 454-8265
Fax (505) 454-8268
Enumeration date May 4, 2011
Last updated in NPPES Jun 25, 2015
Taxonomy & licenses
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.
Frequently asked questions
Is NPI 1639461031 active?
Yes, as of the latest NPPES snapshot, NPI 1639461031 is active (record last updated 2015-06-25).
How do I verify John Williams's NPI record?
Cross-check NPI 1639461031 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-06-25.