Dr. Peak Woo is a laryngologist practicing in New York City.  His practice is limited to laryngology and communication and voice disorders.  His primary professional and research interests are in the field of voice production and its disorders.

Dr. Woo is clinical professor of otolaryngology at the Icahn School of Medicine at Mount Sinai. His private practice is on 300 Central Park West in New York City. As clinical professor, he participates in the training of residents in otolaryngology and fellows in Laryngology at the Icahn School of Medicine.

Born in Taiwan, Dr. Woo immigrated with his family to the New York area at the age of 11.  In 1972, he enrolled in the six year BA/MD joint degree program offered by the College of Liberal Arts and the School of Medicine at Boston University.  After graduation in 1978, his internship in surgery and medicine was at the Hospital of the University of Pennsylvania.  Dr. Woo returned to Boston to do his otolaryngology residency at the combined Boston University/Tufts University otolaryngology training program.  In 1983 he entered academic medicine at the State University of New York Upstate Medical Center in Syracuse.  He returned to Boston at the Tufts-New England Medical Center as Vice Chairman of Otolaryngology from 1994 to 1996.  He was named the Grabscheid Professor of Laryngology at the Icahn School of Medicine at Mount Sinai New York in 2002. He is now Clinical Professor in Otolaryngology Head and Neck Surgery at the Icahn School of Medicine at Mount Sinai New York

He has more than 150 articles in peer reviewed journals. He is the author of the textbook: Stroboscopy. He has given courses in many countries on topics of laryngology.

Dr. Woo was a past president of the American Laryngological Association, the American Broncho-Esophagological Association, the New York Laryngological Society and the New York Head and Neck Society. He was a vice president of the Triological Society and the past President of the American Laryngological Association. Dr. Woo’s past community activities include Doctor to the New York State Theater and the New York City Opera and he serves as advisor to the New York Singing Teacher Association Professional Development Program.  He is an adjunct lecturer at the Columbia Teachers College.

Dr. Woo lives in New Jersey with his wife. He has three grown children Christina, Geoffrey, and Ryan.  

Markus Hess, MD, otolaryngologist and phoniatrician, specialized in laryngology, phonosurgery, professional voice disorders. Head of first Voice Clinic in Germany (MEDICAL VOICE CENTER), chairman of PEVOC, founder of European Academy of Voice (EAV), past president CoMeT, founder of German Society of Phonosurgery, president of International Association of Transvoice Surgeons (IATVS). Introduction of blue laser to laryngology. Long-standing experience in minimally invasive phonomicrosurgery and office-based surgery. Presentations, workshops, instructional courses at international conferences. Memberships on various editorial boards and scientific committees. Authorship in over hundred peer-reviewed articles in professional journals and textbooks.

Professor Seong Keun Kwon earned his M.D., M.S., and Ph.D. degrees from Seoul National University College of Medicine and is a board-certified otolaryngologist with extensive clinical and research expertise in laryngeal cancer, thyroid cancer, and airway stenosis. Clinically, he is regarded as the foremost surgeon in Korea—and among the  leading surgeons in Asia—performing the highest volume of complex airway surgeries. He currently serves as Head of Pediatric Otolaryngology of Seoul National University Hospital (SNUH), Director of the Office of Research Planning and Management of SNUH, Vice Director of the National Strategic Technology Specialized Research Center of SNUH.

Beyond his institutional role, Professor Kwon is deeply engaged in academic societies, serving as President-Elect of the Korean Tissue Engineering and Regenerative Medicine Society, Vice President of the Korean Society for Biomaterials, and General Secretary of the Federation of Korean Surgeons for Children and Adolescents.

As a researcher, his work has centered on the regeneration of the trachea, vocal folds, and salivary glands. His achievements have been recognized with numerous prestigious honors, including the Casselberry Award from the American Laryngological Association in 2018—becoming the 27th recipient since the award’s establishment in 1906—and again in 2024, underscoring the lasting impact of his contributions. He has twice received the Broyles–Maloney Award from the American Bronchoesophagological Association (2016, 2019), and in 2025 & 2026, he was further honored with the Eugene Myers International Paper Award at the Annual Meeting of the American Laryngological Association, recognizing his outstanding contributions to international laryngology research.

He hosts an annual airway workshop at his hospital, which is the only program of its kind in Korea. The workshop is designed to train physicians in the management of difficult airway diseases through multidisciplinary decision-making. In addition, he conducts hands-on courses in rigid bronchoscopy, tracheostomy, and a range of open airway surgeries—including partial cricotracheal resection and laryngotracheal reconstruction.

In Korea, Professor Kwon has also been the recipient of multiple distinguished academic awards, including the Seokdang Academic Award from the Korean Otolaryngological Society, the Excellence in Mid-Career Research Award from the Korean Society for Biomaterials, and the Lifetime Achievement Award from the Korean Tissue Engineering and Regenerative Medicine Society.