served on the active medical staff in dentistry at Concord Hospital in Concord, NH where he played a key role in the start of that institution's Family Health Center dental clinic. He is currently on the advisory board of the Seacoast Dental Coalition and he volunteers at the Families First dental center in Portsmouth, NH.

Dr. McArdle has served on the board of directors of Priority Dental Health, Inc. (the New Hampshire Dental Society's Direct Reimbursement entity) and also on the editorial board of the New Hampshire Dental Society's Granite State Dentist newsletter. One of the articles he authored appeared in the May 1997 issue of The Journal of the American Dental Association detailing the procedure he pioneered for administering painless injections to the palate. Dr. McArdle is also a national lecturer in the dental field, having made presentations at such major meetings as the Yankee Dental Conference, one of the country's largest with more than 28,000 attendees annually. He has been selected by the American Dental Association as an expert reviewer of articles submitted for publication in The Journal of The American Dental Association as well.

Dr. McArdle is a member of the American Dental Association, the New England Dental Society and the New Hampshire Dental Society. He is also a member of the Seacoast Dental Implant Study Group and co-founded the Seacoast Esthetic Dentistry Association (SEDA) of Portsmouth, NH in August, 2000. Dr. McArdle is an alumnus of The Pankey Institute for Advanced Dental Education as well.