Board-certified by the American Board of Facial Plastic & Reconstructive Surgery as well as the American Board of Otolaryngology-Head & Neck Surgery, San Francisco plastic surgeon Dr. Corey S. Maas is one of the most highly regarded and sought-after facial plastic surgeons in the world. He is regularly featured in newspapers, television broadcasts, and magazines, from San Francisco Medicine and Cosmetic Surgery Times to Vogue and Allure.