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John Aaron Cook, DO

Emergency Medicine Physician in Fort Collins, CO · enumerated 2013.

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

National Provider Identifier

1851737498

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Registry record

Entity type Individual (Type 1)
Name John Aaron Cook
Credential DO
Sex Male
Practice address 1024 S Lemay Ave, Fort Collins, CO, 80524
Phone (970) 495-7000
Fax (970) 495-7611
Enumeration date May 21, 2013
Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License DR.0058404 (CO) 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

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

What is the NPI number for John Cook?
The National Provider Identifier (NPI) for John Cook is 1851737498, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Cook practice?
The practice location on file with NPPES is in Fort Collins, CO. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.