Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

James R Mason

Diagnostic Radiology Physician in Mankato, MN · enumerated 2014.

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

National Provider Identifier

1407276991

Verified

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Registry record

Entity type Individual (Type 1)

Name James R Mason

Sex Male

Practice address 1025 Marsh St, Mankato, MN, 56001

Phone (507) 625-4031

Enumeration date Apr 23, 2014

Last updated in NPPES Jun 24, 2026

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License R2407 (TX) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License OS020517 (PA) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 82257 (MN) Primary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License OS19944 (FL) Secondary

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

Is NPI 1407276991 active?

Yes, as of the latest NPPES snapshot, NPI 1407276991 is active (record last updated 2026-06-24).

How do I verify James Mason's NPI record?

Cross-check NPI 1407276991 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-24.