She was born in Johannesburg, South Africa and grew up in Philadelphia, Pennsylvania. After completing her undergraduate degree from the University of Pennsylvania she decided to follow in the footsteps of her father and received her dental degree from Temple University School of Dentistry. Upon graduation, she completed a General Practice Residency at the Long Beach Veterans Administration Medical Center. Dr. Cosgrove has been in private practice for the past 15 years. 

Dr. Cosgrove and her husband Danny, a physician, have two children. In her spare time, Dr. Cosgrove is dedicated to social action and is an active member and leader within her community.

Dr. Cosgrove maintains memberships in many professional organizations including the Academy of General Dentistry, California Dental Association, Alpha Omega Dental Fraternity, and The Beverly Hills Academy of Dentistry. She is also a member of the esteemed Pierre Fauchard Academy. Dr. Cosgrove currently serves on the Peer Review Committee of the Los Angeles Dental Society and has been an active member of this committee for the past 4 years. Dr. Cosgrove is committed to staying on the top of her field and has completed many hours of continuing education including the Esthetic Continuum at UCLA Dental Schools and the Kois Series of Courses.