Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Thomas M Allison, M.D.

Ophthalmology Physician in Birmingham, AL · enumerated 2005.

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

National Provider Identifier

1558365544

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Registry record

Entity type Individual (Type 1)

Name Thomas M Allison

Credential M.D.

Sex Male

Practice address 2700 10th Ave S, Ste 402, Birmingham, AL, 35205

Phone (205) 933-0439

Fax (205) 939-1462

Enumeration date Jun 8, 2005

Last updated in NPPES May 5, 2009

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 7074 (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
000000080	Medicaid	AL	-
051048659	Other	AL	BC/BS
180000402	Other	AL	PALMETTO GPA RR MEDICARE

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

How do I verify Thomas Allison's NPI record?

Cross-check NPI 1558365544 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1558365544 active?

Yes, as of the latest NPPES snapshot, NPI 1558365544 is active (record last updated 2009-05-05).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-05-05.