Back to search results Colin Victor O'Neill, MD Emergency Medicine Contact Atrium Health Union 600 Hospital Drive Monroe, NC 28112 Directions Atrium Health Provider AboutCredentialsLocationsInsurancesReviewsPublications About Practicing Specialties Emergency Medicine Languages English Credentials Board Certifications American Board of Emergency Medicine Education The University of Kansas Residencies Atrium Health Carolinas Medical Center Locations Atrium Health Union 600 Hospital Drive Monroe, NC 28112 Accepted Insurance Ratings and Reviews Most RecentHighest Rating Lowest Rating Publications Most RecentAlphabetical Oldest First