Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Chad William Duncan

Anesthesiology Physician in Missoula, MT · enumerated 2018.

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

National Provider Identifier

1619474319

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Registry record

Entity type Individual (Type 1)

Name Chad William Duncan

Sex Male

Practice address 2825 Stockyard Rd Ste I-200, Missoula, MT, 59808

Phone (406) 728-8420

Enumeration date Apr 9, 2018

Last updated in NPPES Jun 22, 2022

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 107052 (MT) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1619474319 active?

Yes, as of the latest NPPES snapshot, NPI 1619474319 is active (record last updated 2022-06-22).

How do I verify Chad Duncan's NPI record?

Cross-check NPI 1619474319 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 2022-06-22.