Dr. Riordan received her medical degree from the Robert Wood Johnson Medical School.

Dr. Riordan is board certified by the American Board of Dermatology, the Missouri State Board of Medical Examiners, and the National Board of Medical Examiners. She is a Fellow of the American Academy of Dermatology. She is a Clinical Assistant Professor of Dermatology at St. Louis University.

She is a member of several national organizations including the American Academy of Dermatology, the American Society of Dermatologic Surgery, the American Society of Laser Surgery, the American Society of Cosmetic Surgery and the Women’s Dermatologic Society. She graduated from Robert Wood Johnson Medical School in New Jersey and received her dermatologic training from Harvard University and St. Louis University.