Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas William Armstrong, MD

Family Medicine Physician in Huntsville, AL · enumerated 2006.

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

National Provider Identifier

1508890617

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas William Armstrong

Credential MD

Sex Male

Practice address 250 Chateau Dr Sw, Suite 160, Huntsville, AL, 35801

Phone (256) 880-6542

Fax (256) 880-6543

Enumeration date Jul 11, 2006

Last updated in NPPES Oct 11, 2012

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 00006017 (AL) 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
051555831	Medicaid	AL	-
4003490	Other	AL	AETNA
51528072	Other	AL	BCBS OF AL

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 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 Thomas Armstrong?

Thomas Armstrong is registered in NPPES with the primary taxonomy of Family Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-11.