Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Thomas Anthony Gallagher, M.D.

Diagnostic Radiology Physician in Madison, WI · enumerated 2008.

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

National Provider Identifier

1255594792

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Anthony Gallagher

Credential M.D.

Sex Male

Practice address Madison, WI, 53792

Phone (608) 263-9179

Enumeration date Jul 4, 2008

Last updated in NPPES May 9, 2016

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 125047921 (IL) Primary

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

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

What is the NPI number for Thomas Gallagher?

The National Provider Identifier (NPI) for Thomas Gallagher is 1255594792, a Type 1 (individual) record in the CMS NPPES registry.

Where does Thomas Gallagher practice?

The practice location on file with NPPES is in Madison, WI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-05-09.