Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ethan A. Colby, M.D.

Diagnostic Radiology Physician in Plano, TX · enumerated 2008.

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

National Provider Identifier

1841450376

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Registry record

Entity type Individual (Type 1)

Name Ethan A. Colby

Credential M.D.

Sex Male

Practice address 3901 W 15th St, Plano, TX, 75075

Phone (972) 596-6800

Enumeration date Jun 9, 2008

Last updated in NPPES Sep 5, 2013

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 0101243349 (VA) 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

How do I verify Ethan Colby's NPI record?

Cross-check NPI 1841450376 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1841450376 active?

Yes, as of the latest NPPES snapshot, NPI 1841450376 is active (record last updated 2013-09-05).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-09-05.