Our new state-of-the-art Portsmouth office is located at 75 Portsmouth Boulevard, Suite 310, Portsmouth, New Hampshire 03801 is OPEN! Adult and Pediatric Dermatology is pleased to bring our patient-centered care approach to the Portsmouth area. Utilizing state-of-the-art equipment, Adult and Pediatric Dermatology offers full-scale innovative medical, surgical and cosmetic treatments to help patients look and feel their best.