Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John H Mahon, M.D.

Q: What is the NPI number for John Mahon?

The National Provider Identifier (NPI) for John Mahon is 1861474801, a Type 1 (individual) record in the CMS NPPES registry.

Orthopaedic Hand Surgery Physician in South Bend, IN · enumerated 2005 · practices at Beacon Medical Group, Inc..

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

National Provider Identifier

1861474801

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Registry record

Entity type Individual (Type 1)

Name John H Mahon

Credential M.D.

Sex Male

Practice address 1815 E Ireland Rd, South Bend, IN, 46614

Phone (574) 647-1700

Fax (574) 647-7572

Enumeration date Nov 16, 2005

Last updated in NPPES Apr 4, 2024

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 01038212A (IN) Secondary

207XS0106X Orthopaedic Hand Surgery Physician Allopathic & Osteopathic Physicians · License 01038212A (IN) 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
300013114	Medicaid	IN	-

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

Where does John Mahon practice?

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

What is the NPI number for John Mahon?

The National Provider Identifier (NPI) for John Mahon is 1861474801, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-04.