Originally from Rockaway Beach, New York, Dr. Hannan aimed for perfection from an early age. Seeking out the best education that New York City had to offer, she was accepted to and finished first in her class at the prestigious Convent of the Sacred Heart School for Girls. She went on to earn her undergraduate degree at Yale University, where she majored in both biology and music. It was during her studies at Yale, where she pursued architecture and art history, that she first began to appreciate the interplay between form and function, and how each contributes to the definition of beauty.

She went on to complete her medical degree at Georgetown University School of Medicine and stayed to complete her plastic surgery residency at the Georgetown University Hospital program. As the only plastic surgery training program in Washington, DC, she had the opportunity to learn from the masters of the art of cosmetic and reconstructive surgery from all over the District, as well as neighboring Baltimore. During the rigorous six-year surgical residency, she refined her surgical skills and developed an eye for natural beauty.