The Trusted Choice in Hearing Instrumentation, Hearing Health and Audiology. At OTOhealth Hearing Care Centers, we believe that our job is not finished until our patients' lives are improved. We have six conveniently located centers in Huntington, East Islip, Copiague, Ridge, Babylon and Great Neck to better assist you. Leo F. Katz, BC-HIS, ACA. National Board for Certification in Hearing Instrument Science. American Conference of Audioprosthology. Dr. Katz is the director of our Nassau & Suffolk OTOhealth Hearing Centers. Please feel free to contact us at any one of the centers for a hearing evaluation. We look forward to your call and to helping improve your hearing health.