Chaparral Medical Group serves the communities of Claremont, La Verne, San Dimas, Fontana, Pomona, Rancho Cucamonga, Upland, Chino Hills and Diamond Bar. The group is comprised of several physicians, who specialize in cardiology, dermatology, endocrinology, neurology, pulmonary and critical care, women's health, ophthalmology, rheumatology and more.