Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alan T Williams, MD

Specialist in Columbus, MS · enumerated 2006.

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

National Provider Identifier

1215951439

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Registry record

Entity type Individual (Type 1)

Name Dr. Alan T Williams

Credential MD

Sex Male

Practice address 600 Leigh Dr, Columbus, MS, 39705

Phone (662) 327-7525

Fax (662) 243-2252

Enumeration date Jul 27, 2006

Last updated in NPPES Jan 10, 2012

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 12379 (MS) Primary

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
009302110	Other	MS	ALACAID
100015036	Other	MS	RAILROAD MEDICARE
640813832	Other	MS	TAX ID
00017598	Medicaid	MS	—
730-12483	Other	MS	BLUE CROSS OF ALABAMA

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

Is NPI 1215951439 active?

Yes — as of the latest NPPES snapshot, NPI 1215951439 is active (record last updated 2012-01-10).

How do I verify Alan Williams's NPI record?

Cross-check NPI 1215951439 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 2012-01-10.