Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nathan J Cook, DO

Emergency Medicine Physician in Casper, WY · enumerated 2016.

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

National Provider Identifier

1912355082

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Registry record

Entity type Individual (Type 1)

Name Nathan J Cook

Credential DO

Sex Male

Practice address 1233 E 2nd St, Casper, WY, 82601

Phone (307) 577-7201

Enumeration date May 31, 2016

Last updated in NPPES Jun 25, 2020

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 12200A (WY) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
12200A	Other	WY	WYOMING MEDICAL LICENSE

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

How do I verify Nathan Cook's NPI record?

Cross-check NPI 1912355082 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1912355082 active?

Yes, as of the latest NPPES snapshot, NPI 1912355082 is active (record last updated 2020-06-25).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-06-25.