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Colleen M O'Brien

General Practice Physician in Denver, CO · enumerated 2007.

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

National Provider Identifier

1689891996

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Registry record

Entity type Individual (Type 1)
Name Colleen M O'Brien
Sex Female
Practice address 10065 E Harvard Ave Ste 400, Denver, CO, 80231
Phone (303) 614-1400
Enumeration date Apr 19, 2007
Last updated in NPPES Aug 11, 2010

Taxonomy & licenses

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 90809 (CO) Primary

Other identifiers

Identifier Type State Issuer
015273 Other - KAISER-COMMERCIAL NUMBER

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 Colleen O'Brien?
The National Provider Identifier (NPI) for Colleen O'Brien is 1689891996, a Type 1 (individual) record in the CMS NPPES registry.
Where does Colleen O'Brien practice?
The practice location on file with NPPES is in Denver, CO. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-08-11.