Dr. Riordan is a native of Rock Hill, having attended Ebinport Elementary, Sullivan Middle, and Northwestern High schools. He graduated cum laude with a Bachelor of Science degree in Biology from The University of South Carolina for his undergraduate studies. After college, Dr. Riordan attended the Medical University of South Carolina, where he earned his Doctor of Dental Medicine degree. In recognition of his high achievement in dental school, Dr. Riordan was chosen for membership in Omicron Kappa Upsilon Dental Honor Society. Following dental school, Dr. Riordan went on to complete a 30-month residency in Orthodontics and Dentofacial Orthopedics at Medical College of Georgia. Immediately after graduating, Dr. Riordan established his practice in Fort Mill in 2001, and added a Lake Wylie location in 2012.

Dr. Riordan is a past-President of the South Carolina Association of Orthodontists and actively serves as a Clinical Assistant Professor at the Medical University of South Carolina Orthodontic Residency Program, where he has taught clinical orthodontics to the residents since the programs inception in 2006

Organizational Involvement: Fort Mill Rotary Club Tri-county Dental Society, Past President South Carolina Association of Orthodontists, Past President Southern Association of Orthodontists American Association of Orthodontists Clinical Assistant Professor in the orthodontic residency program at MUSC

Our scheduling coordinators are the first people that you talk to when you call our office and the first people you meet when entering. They always have a smile on their faces and make it their goal to schedule your visits & make sure you receive the best orthodontic care possible. They are friendly, efficient and enjoy what they do.

During your first visit, you will meet with the treatment coordinator and with Dr. Riordan for a complete orthodontic exam. The treatment coordinator will provide you with valuable information about orthodontic treatment and will answer all of your questions. Her job is to inform you regarding all aspects of orthodontics and will come up with just the right payment plan so that your needs are met.