Alen N. Cohen is recognized as the one of the best sinus surgeons in Los Angeles for the third year in a row by Los Angeles Magazine, Alen N. Cohen, M.D., F.A.C.S. is a leader in the field of Nasal & Sinus Surgery and is founder and director of the prestigious Southern California Sinus Institute. This is the premier sinus center serving the greater Los Angeles, San Fernando Valley and Conejo Valley areas. Dr. Cohen specializes in the medical and surgical treatment of patients with all nasal and sinus disorders including nasal obstruction, deviated septum, acute and chronic sinusitis, nasal polyps, and sinus headaches. He is a Fellow of the American College of Surgeons and is board certified by the American Board of Otolaryngology/Head and Neck Surgery. He also maintains a full membership in the American Academy of Facial Plastic and Reconstructive Surgery (AAFPRS) and the American Rhinologic Society (ARS).