Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Matthew Bradley Hammar, D.O.

Pulmonary Disease Physician in Columbus, OH · enumerated 2008.

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

National Provider Identifier

1174790612

Verified

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Registry record

Entity type Individual (Type 1)

Name Matthew Bradley Hammar

Credential D.O.

Sex Male

Practice address 1087 Dennison Ave, Columbus, OH, 43201

Phone (614) 360-9754

Enumeration date May 14, 2008

Last updated in NPPES Aug 22, 2025

Taxonomy & licenses

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 34.009441 (OH) Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 34.009441 (OH) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
2923466	Medicaid	OH	-

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 Matthew Hammar?

The National Provider Identifier (NPI) for Matthew Hammar is 1174790612, a Type 1 (individual) record in the CMS NPPES registry.

Where does Matthew Hammar practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-22.