Dr. O'Shaughnessy, a tennis enthusiast and mother of two who grew up in Larchmont, received her Bachelor's degree from the University of Florida and her Doctorate of Dental Surgery from the University of Maryland College of Dental Surgery in 2005. Upon graduation, she moved to Manhattan to complete her advanced training as a general practice resident at St. Luke's-Roosevelt Hospital.

Dr. O is an active member of the New York State Dental Association, Academy of General Dentistry, Connecticut State Dental Association, and Greenwich Dental Society and recently completed her associate fellowship training in Laser Dentistry.