Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Brett O'Connor
Nurse's Aide in Denver, CO · enumerated 2019.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1861035420
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Brett O'Connor
Sex Male
Practice address 2600 S Grant St, Denver, CO, 80210
Phone (303) 733-9348
Enumeration date Oct 25, 2019
Last updated in NPPES Oct 25, 2019
Taxonomy & licenses
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.
Frequently asked questions
What is the NPI number for Brett O'Connor?
The National Provider Identifier (NPI) for Brett O'Connor is 1861035420, a Type 1 (individual) record in the CMS NPPES registry.
Where does Brett O'Connor 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
Browse all → Rodney Lanham Mental Health Counselor · Denver, CO NPI 1205969409 Corey Brown Mental Illness Community Based Residential Treatment Facility · Denver, CO NPI 1689004343 Hannah Elliott Social Worker · Denver, CO NPI 1710585336 Mental Health Center of Denver Mental Health Clinic/Center (Including Community Mental Health Center) · Denver, CO NPI 1366038820 John Bailey Peer Specialist · Denver, CO NPI 1811569635 Norinda Otema Danso Social Worker · Denver, CO NPI 1023771151 Mental Health Center of Denver Mental Illness Community Based Residential Treatment Facility · Denver, CO NPI 1982441150 Carlos Rivera Counselor · Denver, CO NPI 1588459879
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-10-25.