Breastcancer.org is a nonprofit organization that provides reliable information about breast health and breast cancer online and in print. It receives over 9 million annual visits globally and helps women understand complex medical information to make informed healthcare decisions. The organization's founder, Dr. Marisa Weiss, is a breast cancer oncologist who advocates for patient education. Breastcancer.org is celebrating its 10th anniversary with a concert at the Academy of Music in Philadelphia featuring Harry Connick Jr. to raise funds and awareness.