Dr. Waddell is a 1987 honors graduate of the Baltimore College of Dental Surgery, University of Maryland Dental School. His honors include election to Omicron Kappa Upsilon, Gorgas Odontological Society, and Gamma Pi Odontological Society. The Baltimore City Paper awarded him the Best Dentist Award in 1997 and 2000. He has completed a General Practice Residency at Prince George's Hospital Center and is a Fellow of the Academy Of General Dentistry. Other degrees include a Master of Science in Molecular Biology and Bachelor of Arts in Biological Sciences from the University of Maryland Baltimore County.

Professional organization memberships include:

American Dental Association

Maryland State Dental Association

Anne Arundel County Dental Association

Academy of General Dentistry

International Congress of Implantologists

American College of Oral Implantology

Implant Prosthodontic Section

Chesapeake Implant Study Club

Dr. Waddell is married to Dr. Susan Stasiewicz, an anesthesiologist at the Washington Hospital Center. Their hobbies include jogging, bike riding, skiing, snowboarding, rock and ice climbing. Their son Ian is in grade school and enjoys all sports and photography.