Holly has spent most of her life in Massachusetts and is thrilled to be joining Acton Medical Associates. After graduating from Tufts University School of Medicine, she did her internal medicine residency at UMass Memorial Medical Center, where she also did some additional training in Pulmonary and Critical Care. Dr. Mazur enjoys taking care of complex medical conditions. She has a clinical interest in women’s health, lung diseases, and geriatrics. In her free time, she enjoys hiking, biking, local New England travel, and spending time with family, friends, and her rescue dogs.