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.  

Prof. Dr. İsmail Koçak, MD, MSc (Biomedical Engineering) is an otolaryngologist–head & neck surgeon with a clinical and academic focus on laryngology, phonosurgery, and professional voice care, integrating surgical innovation with voice science. He has been working in the field of voice since 1993, with a particular interest in tissue-preserving microlaryngeal surgery, esthetic/identity-related voice surgery, and objective outcome assessment.

He received his MD from Hacettepe University Faculty of Medicine (1992), completed ENT residency at Ankara University (1996), and earned an MSc in Biomedical Engineering from Boğaziçi University (2002) with a thesis on laryngeal resonance modeling and surgical optimization of voice quality. His specialty thesis addressed implant design for unilateral vocal fold paralysis. He was appointed Associate Professor (2010) and later Professor and Department Chair (2016–2019).

Prof. Koçak has contributed to the development and clinical dissemination of several techniques in esthetic voice surgery and phonosurgery, including approaches for pitch and timbre modulation and tissue-preservation strategies in microlaryngeal interventions. His clinical practice encompasses voice feminization/masculinization, pitch-range modulation, thyroplasty, complex revision voice cases, and management of organic laryngeal pathology, including laryngeal masses and oncology-related voice rehabilitation, as well as treatment of spasmodic dysphonia.

His research output includes publications in international peer-reviewed journals, notably on novel surgical techniques and imaging/diagnostic features in phonosurgery (e.g., Journal of Voice), and interdisciplinary work bridging signal processing, imaging, and machine learning with laryngology. He has supervised doctoral research in voice therapy and vocal training and led funded academic work including the “Acoustic Body Project” (TÜBİTAK, 2015–2018).

He is a frequent invited speaker and panelist at major international meetings, including the American Academy of Otolaryngology–Head and Neck Surgery (international sessions on challenging laryngology cases and esthetic voice surgery) and European laryngology platforms. He is a member of professional societies including the European Laryngological Society and the Acoustical Society of America. Prof. Koçak is based in Istanbul, where he practices and teaches in the field of voice surgery and vocology.