Nick is Board Certified in Undersea and Hyperbaric Medicine and Otolaryngology. He has treated divers for all of his professional life, and has been sport diving for that time as well. He was in private practice until 2017, and remains on the staff of the Hyperbaric Unit of the Massachusetts Eye and Ear Infirmary. He is a member of the Undersea and Hyperbaric Medical Society, was on the Board, and remains on The Education Committee.