Colleen M O'Brien
Colleen M O'Brien is a General Practice Physician provider (General Practice) practicing in Denver, CO, registered in the NPPES registry with NPI 1689891996 since 2007.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1689891996 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Colleen M O'Brien |
| Sex | Female |
| Practice address | 10065 E HARVARD AVE STE 400, Denver, CO, 80231 |
| Phone | 3036141400 |
| Enumeration date | 2007-04-19 |
| Last updated in NPPES | 2010-08-11 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208D00000X | General Practice Physician | Primary | 90809 | CO |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 015273 | Other | — | KAISER-COMMERCIAL NUMBER |
Copy-ready billing details
Provider: Colleen O'Brien NPI: 1689891996 Taxonomy: 208D00000X (General Practice Physician) Address: 10065 E HARVARD AVE STE 400, Denver, CO, 80231
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1265576045 | Joyce Natale | Individual | Registered Nurse | Denver, CO |
| 1699805457 | Heather Tolliver | Individual | Family Medicine Physician | Denver, CO |
| 1114112406 | Denise Lee | Individual | Licensed Practical Nurse | Denver, CO |
| 1861680464 | Daylene Webb | Individual | Registered Nurse | Denver, CO |
| 1598953119 | Melenda Dahmer | Individual | Registered Nurse | Denver, CO |
| 1639367147 | Janie Maclachlan | Individual | Registered Nurse | Denver, CO |
| 1275721755 | Jean Ziccardi | Individual | Registered Nurse | Denver, CO |
| 1184803298 | Kelly House | Individual | Specialist | Denver, CO |
Verify this record
Cross-check NPI 1689891996 against the authoritative CMS record: view Colleen M O'Brien on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
What is the NPI number for Colleen O'Brien?
Where does Colleen O'Brien practice?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2010-08-11.