NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Benjamin Callahan

Student in an Organized Health Care Education/Training Program in Richmond, TX · enumerated 2021 · practices at Maximusdme LLC.

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

National Provider Identifier

1477124139

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Registry record

Entity type Individual (Type 1)
Name Benjamin Callahan
Sex Male
Practice address 19221 Beechnut St Apt 912, Richmond, TX, 77407
Enumeration date Jul 5, 2021
Last updated in NPPES Dec 31, 2021

Taxonomy & licenses

246QM0706X Medical Technologist Technologists, Technicians & Other Technical Service Providers Secondary
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Primary

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

Is NPI 1477124139 active?
Yes, as of the latest NPPES snapshot, NPI 1477124139 is active (record last updated 2021-12-31).
How do I verify Benjamin Callahan's NPI record?
Cross-check NPI 1477124139 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 2021-12-31.